BMW S1000R

Main S1000R Boards => S1000R - General Chat => Topic started by: Buffetslayer on September 14, 2016, 09:46:08 PM

Title: Tank capacity/range questionable...
Post by: Buffetslayer on September 14, 2016, 09:46:08 PM
So I've done 560 miles on my new bike, absolutely love it but I can't trust the 'range' indicator... I ran it down to just 5 miles left yet brimming the tank it only took 15.7 litres and the tank is supposed to take 17.5. I can't believe i had 1.8 litres left when it only showed 5 miles range... How brave should I be..?
Title: Re: Tank capacity/range questionable...
Post by: MarketSquareHero on September 14, 2016, 09:59:01 PM
Lowest I've been to is also 5 miles but didn't take note how much I put in.
I was just thankful to come across a fuel station.
Title: Re: Tank capacity/range questionable...
Post by: miles on September 14, 2016, 10:23:53 PM
I've let mine run out of gas twice. Once ran completely out at 10 past zero, the other 11 past the zero to go indication.

On my old RR, zero meant zero.
Title: Re: Tank capacity/range questionable...
Post by: BillB on September 14, 2016, 11:32:58 PM
They've built in an optimistic buffer so that those brave enough to test the 0 limit wouldn't run out?
Title: Re: Tank capacity/range questionable...
Post by: Simonr23 on September 15, 2016, 12:09:12 AM
It might be the tank holds 17.5l of air/liquid, but the neck filler thingo has to be removed to use it all? Perhaps the bike has to be tilted back/forward a bit, also.

As to range, why does it only read up to 250km as the max. On legal speed rides(city or country) the bike stays on 250 for 50kms, and then starts giving proper readings. If I wanted to ride to empty, my normal range is 290-310kms.
Title: Re: Tank capacity/range questionable...
Post by: jjsc6 on September 15, 2016, 02:28:38 AM
*Originally Posted by miles [+]
I've let mine run out of gas twice. Once ran completely out at 10 past zero, the other 11 past the zero to go indication.

On my old RR, zero meant zero.

I have not run dry, but I've run it pretty low.  I would guess that mine would also go about ten moles past zero.  I think that is about the right fusion they have built in.  My 1600 seems to have a pretty similar cushion.  I actually think the range to empty on my BMW motorcycles is the best of the many vehicles I've owned with that feature. 
Title: Re: Tank capacity/range questionable...
Post by: terpion on September 15, 2016, 10:46:28 AM
I am not sure if this would be the case on S1000R as well, however, my Honda CBR did not allow to use up all the fuel. It would stop running and there was always some fuel left in the tank. As I have found out later this was by design as the fuel was used to cool the fuel pump.
I did not try running out of fuel on the beemer just yet  :033: I have got assistance package, just no time or patience for it, so I'll try not to test that theory for you  :745:
Title: Re: Tank capacity/range questionable...
Post by: GDCobra on September 15, 2016, 11:10:14 AM
I think I'd be a bit more peeved with BMW if they overestimated the remaining miles rather than underestimating, with 5 miles to go you reckon you had 1.8 litres left, so this would be just over a litre when you hit zero?  I could understand your issue if you'd have a gallon left (particularly if it was one of those full size ones we use over here in the UK) but that litre may be deliberate on their behalf as running completely dry is not a good thing as has been said.

Another thing to bear in mind is the range calculation is (most likely) based on previous fuel consumption rate, when the light comes on most people tend to ease of the throttle and hence ride more efficiently, the computer may not have enough time/miles to respond to this.
Title: Re: Tank capacity/range questionable...
Post by: jjsc6 on September 15, 2016, 12:46:43 PM
*Originally Posted by jjsc6 [+]
I have not run dry, but I've run it pretty low.  I would guess that mine would also go about ten moles past zero.  I think that is about the right fusion they have built in.  My 1600 seems to have a pretty similar cushion.  I actually think the range to empty on my BMW motorcycles is the best of the many vehicles I've owned with that feature.

Okay, this is a good example of why this forum needs to change the settings that don't allow us to edit a post after some amount of time.  Auto correct got mad at me for misspelling words, and I didn't catch it until this morning.  Why is this the only forum on the planet that does not let us edit posts?
Title: Re: Tank capacity/range questionable...
Post by: BillB on September 15, 2016, 01:25:58 PM
*Originally Posted by jjsc6 [+]
...Why is this the only forum on the planet that does not let us edit posts?

Perhaps they don't want some disgruntled poster to go back and delete his entire posting history (again).   :038:
Title: Re: Tank capacity/range questionable...
Post by: hedonist222 on September 17, 2016, 07:55:19 PM
What a coincidence!

I came here to start this exact thread.

Yesterday, I ran my tank down to 10km (6.2 miles) as per the remaining range indicated.

I was expecting to fill it up to at least 17 liters out of the stated 17.5 liter tank.

I was able to fill up to only 15.2 liters.
I admit that the bike wasn't completely vertical. It was on the stand but I had the front tire centered. So almost vertical.
I filled up to just where the red neck starts.

My bike only has about 600km on it.
I've been monitoring how much mileage before each refill.
I am getting 200 km per 15 liters of fuel.

I also admit that I was riding hard the last 5 liters of fuel because I knew there'd be several petrol stations coming up.

So, according to my fuel consumption, I'm getting approx 13.3 km per liter of fuel.

So the 10 km remaining mileage is grossly underestimated.

Because by refilling to 15.2 liters, I still had about 2.3 liters left in the tank
2.3l * 13.3km = 30km remaining

So, the computer underestimated by 66% (10km stated/30km potential).
Title: Re: Tank capacity/range questionable...
Post by: Noggie on September 17, 2016, 08:34:54 PM
I ran my bike down to 30km the day before yesterday, and I filled 14,5 liters.
This was me filling with the nozzle tucked in the pipe (stopped around 12l), and then just filling into the pipe until I was no longer comfortable with filling any more.
I once overfilled, and the bike started dripping fuel out of a hose just under the radiator, presumably the tank vent.

I remember having this exact thread discussion on my previous bike, it too would not let you fill the claimed volume, even with zero range to go.

I'm not willing to put money on this claim, but this is my theory.
I think perhaps the volume of the tank is 17,5l.
But you will never be able to completely fill it because of the filling neck. there will allays be an air pocket at the top, and the fuel output pipe is not at the very bottom of the tank, it sits a bit above. So when the engine can't get any more fuel, there is still a bit left at the bottom.
The reason for this is because any contaminants will sink to the bottom, and not go into the engine or clog up the feed pipe, and so will water. So if the bikes sits for a few days the water would collect at the bottom, and when you go to start it, it would pump water and not fuel into the engine and it would not start. So there is always a small "sump" at the bottom of the tank. when riding the fuel splashes around and mixes the water, and a few water drops here and there is not something you notice.

So bottom line.
You have a 17,5l tank, and approx. a 0,5l "sump" at the bottom (maybe less), and probably 1l of air pocket at the top.
This leads me to believe that you will probably never be able to have more than 16l of usable fuel in the tank.

My computer seems to report a consumption of 6,2-6,3l/100km on my normal riding.
Today I did a 400km trip up the mountains with some friends, and it now states 6,1l/100km.
This should give me a theoretical range of 262km for 16l using 6,1l/100km
Title: Re: Tank capacity/range questionable...
Post by: miles on September 19, 2016, 09:58:53 PM
Today I ran my bike completely and utterly dry. The engine stuttered and died as I pulled into the gas station.

I filled it high on the neck and it took 17.47 liters.

So yes, it is a 17.5 liter tank.
Title: Re: Tank capacity/range questionable...
Post by: Blim3y on September 19, 2016, 10:19:54 PM
*Originally Posted by miles [+]
Today I ran my bike completely and utterly dry. The engine stuttered and died as I pulled into the gas station.

I filled it high on the neck and it took 17.47 liters.

So yes, it is a 17.5 liter tank.
Miles what did your range indicate at that point ? Had it gone to zero and how many miles over if any ?
Cheers
Title: Re: Tank capacity/range questionable...
Post by: Noggie on September 19, 2016, 11:16:46 PM
*Originally Posted by miles [+]
Today I ran my bike completely and utterly dry. The engine stuttered and died as I pulled into the gas station.

I filled it high on the neck and it took 17.47 liters.

So yes, it is a 17.5 liter tank.
*Originally Posted by Blim3y [+]
Miles what did your range indicate at that point ? Had it gone to zero and how many miles over if any ?
Cheers

I'd be interested in knowing that too. rode mine to 25km remaining range today, and filled just over 15L again.
based on my consumption 25km should be 1,5L just under 17L, very close to the stated capacity.
Title: Re: Tank capacity/range questionable...
Post by: beech on September 24, 2016, 05:47:51 AM
Good job Miles. I rode 196 miles on a tank and had an indicated 6 miles left. Put in a little over 4.3 gallons. I think my computer read out is rather accurate compared to previous BMW bikes. Next time I'm out of things to do, I'll pack a liter of fuel and run her dry. Easy to go 150 miles. No worries. Problem is here in the Western States, there are places that things are stretched out longer than that. I tend to stick to more populated areas on the S bike. The K13S bike can go 225 miles no problem. Our friends in Europe have no distances like we see in Nevada or such places.
Title: Re: Tank capacity/range questionable...
Post by: Chris on July 31, 2017, 12:55:25 PM
I ran it down to 0 miles as I pulled into the petrol station. Managed to get 17l in so don't think computer range figure is far off on 2017 bike.
Title: Re: Tank capacity/range questionable...
Post by: Enzio on July 31, 2017, 01:59:50 PM
My recent experience:
Ran it down zero lines on the gauge, showing around 47km range left.
Stopped at the petrol station with 13km range left and had covered 267.2km - filled with 16.55 litres to the absolute brim.

Looks like the gauge is inaccurate but the range calculation is quite accurate.
Funny thing is when filled the range will not show more than 250km, and stays there a while after you start riding.
Title: Re: Tank capacity/range questionable...
Post by: GDCobra on July 31, 2017, 05:27:42 PM
*Originally Posted by Enzio [+]

Funny thing is when filled the range will not show more than 250km, and stays there a while after you start riding.

Not that funny really, if you look at the shape of the tank it would obviously not be possible to make a sensor which will measure up as far as the fuel can go.  Once the sensor tops out the system won't know about any additional fuel so it can't increase the range calculation.
Title: Re: Tank capacity/range questionable...
Post by: Enzio on August 01, 2017, 07:45:53 AM
*Originally Posted by GDCobra [+]
Not that funny really, if you look at the shape of the tank it would obviously not be possible to make a sensor which will measure up as far as the fuel can go.  Once the sensor tops out the system won't know about any additional fuel so it can't increase the range calculation.

It is funny (or interesting), since a car works in a different manner and will have the same limitation when it comes to a level sensor.

My X-Trail, for example, works out the available range after a fill-up based on the fuel usage stored in the ECU memory - so it will show anything from about 750-900km available range and adjust from there based on the current fuel usage rate. This indicative range is usually quite accurate if I have the same travel patterns that it had stored from the previous tank.

On the S1000R, it defaults at 250km and that is that. It does not work back to actual fuel usage trends, well not as far as I have seen.
Title: Re: Tank capacity/range questionable...
Post by: mart242 on August 01, 2017, 01:01:50 PM
*Originally Posted by Enzio [+]
On the S1000R, it defaults at 250km and that is that. It does not work back to actual fuel usage trends, well not as far as I have seen.

Isn't fuel usage much more difficult to predict on a motorcycle?  It sure is different when you fill up just before the twisties vs when you fill up for your morning commute..
Title: Re: Tank capacity/range questionable...
Post by: Thorneel on August 01, 2017, 03:34:06 PM
This will give a better idea of what you can expect ---> https://www.spritmonitor.de/en/overview/6-BMW/1450-S_1000_R.html?powerunit=2
Title: Re: Tank capacity/range questionable...
Post by: zombie on August 01, 2017, 03:51:01 PM
I find fuelly has a better interface:

http://www.fuelly.com/motorcycle/bmw/s1000r/all

For what it's worth I have been averaging 36 mpg on my new 2017 (less than 1,200 km), but I've been riding as per the manual during my breaking in period (varying rpm, etc)
Title: Re: Tank capacity/range questionable...
Post by: Valvefloat on August 03, 2017, 04:10:45 AM
The most I've ever put in my bike was 4.533 gallons (17.18 liters). The trip computer was showing 1 mile to empty. I've filled up numerous times with the DTE below 5 miles and never run dry.
Title: Re: Tank capacity/range questionable...
Post by: Enzio on August 03, 2017, 07:20:16 AM
*Originally Posted by Valvefloat [+]
The most I've ever put in my bike was 4.533 gallons (17.18 liters). The trip computer was showing 1 mile to empty. I've filled up numerous times with the DTE below 5 miles and never run dry.

Good to know!
My commute will be so much easier if I can push the mileage a bit. Guess I'll give it a whirl to push the range a bit.
Title: Re: Tank capacity/range questionable...
Post by: miles on August 03, 2017, 07:41:31 AM
On Saturday:

(https://images.s1000r.co.uk/IMG_5766.jpg)
Title: Re: Tank capacity/range questionable...
Post by: Rob1975 on August 16, 2017, 08:29:45 PM
I was on my way on Sunday back from a festival and bike got down to zero and then seen a sign for services 12 miles away. Squeaky bum time and thought id have no chance but luckily got me there. All in all probably got 14 miles on zero. Albeit motorway miles at a steady 60.
Title: Re: Tank capacity/range questionable...
Post by: aphroke on August 17, 2017, 03:35:29 PM
I ran mine down to zero a while ago and it took 16.7 litres... I feel pretty comfortable running it down to zero ever since, as long as I know there is a gas station within a 10km range  :018:
Title: Re: Tank capacity/range questionable...
Post by: busabim on August 17, 2017, 07:00:31 PM
In my experience, the fuel computer especially on a protracted highway run is very accurate as to how far before empty.

I have been on trip with 1 liter left in the tank as the countdown to empty is very accurate.

If you reset the trip computer on the highway, you will get very good accuracy.

BB
Title: Re: Tank capacity/range questionable...
Post by: Chris on August 18, 2017, 05:23:43 PM
Ran my 2017 down to exactly zero as it rolled into the petrol station and got 17 litres in filling it vertically so as others have said, 2017 is pretty spot on. I normally go on 10miles per litre when you're on steady away fuel save mode so possibly 5 miles left on 0.
Title: Re: Tank capacity/range questionable...
Post by: Tarkan on May 20, 2019, 07:38:14 AM
This is the one thing that annoys me about my S1000R. It is my commuter. I only get 180-200kms on a tank and my weekly commute is 250kms. I really dislike having to stop at a fuel station more often than once a week. Why don't they make fuel tanks a little bit bigger. My 500 had a similar size tank with half (less than half) the engine size so one would think that there is a typical range for a bike. The 500 easily did 350-400 in the city.
When I take the S1000R out on the open road, I have to really plan my route and pray that the petrol stations are not getting renovated. It's stress you don't need when you are enjoying the twisties and wind in your balding hair.
Title: Re: Tank capacity/range questionable...
Post by: SimonS1KR on May 20, 2019, 09:03:14 AM
I think the simple answer is that more fuel would mean more weight. The R is really aimed at the sporty side of road riding, so whilst itís pretty good at the commuting and touring thing, low weight and good handling are a priority over range. But having been caught out a couple of times with low fuel myself, I get where youíre coming from... :002:
Title: Re: Tank capacity/range questionable...
Post by: podders on May 20, 2019, 09:39:08 AM
it certainly isnt the best but then again it was never sold as a touring bike , its a sportsbike with upright bars, 17.5L is on par with the other super nakeds.

The airbox is part of the issue, on modern bikes they are huge...My old RD500 holds a massive 23 litres but that was par for the course back then but airbox design was real basic and tiny in comparison to todays modern box with ram air, flapper valves and servos..

Would be much worse if you bought a touring bike and then found out it had a similar size tank ..like a VFR1200!

Title: Re: Tank capacity/range questionable...
Post by: Enzio on May 20, 2019, 09:55:10 AM
*Originally Posted by Tarkan [+]
This is the one thing that annoys me about my S1000R. It is my commuter. I only get 180-200kms on a tank and my weekly commute is 250kms. I really dislike having to stop at a fuel station more often than once a week. Why don't they make fuel tanks a little bit bigger. My 500 had a similar size tank with half (less than half) the engine size so one would think that there is a typical range for a bike. The 500 easily did 350-400 in the city.
When I take the S1000R out on the open road, I have to really plan my route and pray that the petrol stations are not getting renovated. It's stress you don't need when you are enjoying the twisties and wind in your balding hair.

My commute is 90km per day, I fill up every 3rd day.
So I get 270km out of a tank with a small reserve left (usually 10-20km).
I then fill up with around 16 litres.

Are you using the gauge or the range calculation?
The gauge is useless, but the range calculation has been very accurate in my experience.
Title: Re: Tank capacity/range questionable...
Post by: CraigA on May 20, 2019, 12:38:02 PM
*Originally Posted by Tarkan [+]
This is the one thing that annoys me about my S1000R. It is my commuter. I only get 180-200kms on a tank and my weekly commute is 250kms. I really dislike having to stop at a fuel station more often than once a week. Why don't they make fuel tanks a little bit bigger. My 500 had a similar size tank with half (less than half) the engine size so one would think that there is a typical range for a bike. The 500 easily did 350-400 in the city.
When I take the S1000R out on the open road, I have to really plan my route and pray that the petrol stations are not getting renovated. It's stress you don't need when you are enjoying the twisties and wind in your balding hair.
Something seems out to me, unless your commute is done at 150kph, which seeing your location, I know that wouldnt be the case.

Does your range improve out on the open road?
 
How many litres do you normally fit into the tank per fill and what is your l/100km figure on your computer?
Title: Re: Tank capacity/range questionable...
Post by: zombie on May 20, 2019, 01:21:42 PM
I can easily get 300km out of a tank, unless I'm really riding beyond street speeds (180kph+) the entire time.  If I brim the tank, I can get a minimum of 50km before the range computer even starts to lower the estimated range below 250km.

By comparison, my friend with a 2017 FZ10 needs fuel at around 200km (it was just over 160km when his bike was new), so considering my bike has roughly the same sized tank and puts out more power, I'm pretty sure Yamaha just converts fuel into noise (and the crossplane does sound nice, IMO).
Title: Re: Tank capacity/range questionable...
Post by: hedonist222 on May 20, 2019, 01:53:33 PM
How are you guys getting over 250km per tank?

I can't get more than 230km.

I only have an akrapovic slip on.
Title: Re: Tank capacity/range questionable...
Post by: Jon_Dong on May 20, 2019, 02:52:03 PM
*Originally Posted by miles [+]
On Saturday:

(https://images.s1000r.co.uk/IMG_5766.jpg)

Good god fuel is cheap in the US. Come over to the UK and have your pants pulled down at the pump.
Title: Re: Tank capacity/range questionable...
Post by: GDCobra on May 20, 2019, 06:15:20 PM
*Originally Posted by Jon_Dong [+]
Good god fuel is cheap in the US. Come over to the UK and have your pants pulled down at the pump.

Nothing like what it used to be. And bear in mind that is for those, somewhat limp, US, gallons which are 20% smaller than our full fat ones.
Title: Re: Tank capacity/range questionable...
Post by: miles on May 20, 2019, 07:39:46 PM
But also take into account I live in California, which has clean air laws stricter than any other state.  As a result, we pay about a dollar a gallon more than anywhere else in the US...
Title: Re: Tank capacity/range questionable...
Post by: GDCobra on May 20, 2019, 10:33:52 PM
*Originally Posted by miles [+]
But also take into account I live in California, which has clean air laws stricter than any other state.  As a result, we pay about a dollar a gallon more than anywhere else in the US...
Aye but when I first went the the US I struggled to even calculate the difference, I'm sure it was more than a factor of 10.
Title: Re: Tank capacity/range questionable...
Post by: miles on May 21, 2019, 12:53:09 AM
It's a tricky conversion to do in your head, since there are two variables- exchange rate and amount of fuel.  Add to this the gallons/Liters conversion and it's a mess.

Stepwise, it's

PPL (Price Per Liter) x 3.785 = PPG (Price per gallon)

PPG x CER (Current Exchange Rate) = Price per gallon in US Dollars.

I just got back from Spain, where I was paying around 1.30 Euro/L.  This works out to $5.50/ gallon.  Here in San Diego current prices run about $3.30/gal, so 60% of the price.
In Texas, current pricing runs a bit less than $2/gallon, so a bit less than 40% of what a Spaniard pays.
Title: Re: Tank capacity/range questionable...
Post by: Tarkan on May 21, 2019, 04:55:36 AM
*Originally Posted by CraigA [+]
Something seems out to me, unless your commute is done at 150kph, which seeing your location, I know that wouldnt be the case.

Does your range improve out on the open road?
 
How many litres do you normally fit into the tank per fill and what is your l/100km figure on your computer?

I live in Sydney Australia where the average speed during the morning peak hour (more like peak 4 hrs) is less than 25km/hr. Hence the reason why I ride to work. I get to use the bus lanes, transit lanes and can park in the city for free if I find a spot. So I only get approx 180km out of a 15 Litre fill because most of the fuel is probably burnt in the exhaust pipe when I throttle off. (I ABSOLUTELY LOVE that popping sound in the Akro).
Why do I commute on an S1000R I hear you ask? Why not I say! :)  Just wish the tank was a little bigger. Just a little.
Title: Re: Tank capacity/range questionable...
Post by: F456 V12 on May 22, 2019, 06:24:32 AM
I am one of those fill to the brim fillers...get about 35 mpgs of spirited riding...guess about 155 to 165 miles per tank is about right.  Didn't buy the bike as a commuter, for me cheap weekend fun.

Stay safe,

MB
Title: Re: Tank capacity/range questionable...
Post by: Jon_Dong on May 22, 2019, 09:59:16 AM
*Originally Posted by F456 V12 [+]
I am one of those fill to the brim fillers...get about 35 mpgs of spirited riding...guess about 155 to 165 miles per tank is about right.  Didn't buy the bike as a commuter, for me cheap weekend fun.

Stay safe,

MB

Mine reads as high as 43 mpg whether I ride like I stole it or pootle about.
Title: Re: Tank capacity/range questionable...
Post by: NHS1R on May 22, 2019, 11:56:00 PM
I ride with gs and ks bikes and own a k1300s, I need to stop way more often on this rocket. My K1300s with bags ridden hard still gets 42 mpgs after 30k miles.
The S1R on a good day maybe 38.
Title: Re: Tank capacity/range questionable...
Post by: SimonS1KR on May 24, 2019, 09:04:12 PM
I just realised Iíve never worked out my mpg in nearly 4 years of ownership. Actually, Iím not even sure how many miles my bike has done either. My dash is always set to display distance-to-empty due to my range anxiety  :008: