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Old 09-01-2013, 09:12 AM   #181
JRose
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Quote:
Originally Posted by Geoffster View Post
Some believe that the dribbles that spill out of the tank when trying to fill it 100% lead to the cracks.

I simply don't know. Disturbingly, neither do the engineers at BMW!
Not likely. Mine is cracked on both sides.
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Old 09-01-2013, 10:33 AM   #182
AK650
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I'm confused..... is the actual fuel tank cracking on these bikes, or is it the tank cover?

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Old 09-01-2013, 11:12 AM   #183
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Cover
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Old 09-01-2013, 12:28 PM   #184
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Quote:
Originally Posted by JRose View Post
Not likely. Mine is cracked on both sides.
Thus the spilled fuel hypothesis is deprecated. That's the way science works!

Next up: simple fatigue causing material separation. We're considering the cumulative effects of a mass greater than 13 kilos times acceleration supported by an upper bridge and a lower stay.

Do you ride brutally off-pavement?
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Old 09-01-2013, 12:46 PM   #185
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Quote:
Originally Posted by Geoffster View Post
Thus the spilled fuel hypothesis is deprecated. That's the way science works!

Next up: simple fatigue causing material separation. We're considering the cumulative effects of a mass greater than 13 kilos times acceleration supported by an upper bridge and a lower stay.

Do you ride brutally off-pavement?
My bike is only 4 months out of the showroom, 1000 miles of street beating so far.

It's obviously just a defect in material or construction. If I had to guess, and this is just a guess, I would say substandard plastics, or that the molding process causes a thin place where the separation is occurring.

Mine looks like little holes, as if the plastic is actually separating on a seam.
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Old 09-01-2013, 02:48 PM   #186
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Originally Posted by Rider 101 View Post
Is it time for a decent survey on what part of the globe is prone to tank cracking? Is it a US thing or is it global. Lets have a tally.

My 11 doesn't have a crack. I never use fuel with ethanol. It is total crap and not to be used in outboards or aero engines ( at least in Oz ) for a reason; unreliable dangerous shit.
I have a poll running here that might indicate that the problem is more common on USA bikes:

http://f800riders.org/forum/showthre...s-tank-cracked
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Old 09-01-2013, 03:50 PM   #187
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Originally Posted by JRWooden View Post
I have a poll running here that might indicate that the problem is more common on USA bikes:

http://f800riders.org/forum/showthre...s-tank-cracked
That poll is rather telling... is it possible the ROTW models use a different type of plastic due to some US reg about the material used? Below is the ROTW tank, for some reason I can't access the EPC for US versions of the F800GS to compare, but there must be some differences to accommodate the canister - something that makes it less structurally sound maybe?

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Old 09-01-2013, 05:51 PM   #188
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too late

A lot of our fuel is now E10 from sugar cane. our local motor racing class, V8 Supercars, comprising of Ford, Holden, Nissan and Mercedes V8's uses E85. It is a mater of time until the junk creeps into our bowsers.

Quote:
Originally Posted by Geoffster View Post
Ethanol is a poor fuel but has powerful friends in corn producing nations. Lucky for you, your nation ranks 65th in corn production. (Belarus grows nearly three times as many tons as Australia! http://www.indexmundi.com/agriculture/?commodity=corn)

But worry if your sugar cane growers ever get organized--you'll follow Brazil's lead with 25% alcohol.
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Old 09-12-2013, 08:37 PM   #189
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2013 F700GS - mine cracked too

Hi All, My 2013 F700GS just turned 1 year old and also has a cracked gas tank on the right side. BMW was informed today. All of us need to go to the NHTSA site and file complaints as this is a safety issue. Just go to https://www-odi.nhtsa.dot.gov/ivoq/ and it takes just 2 minutes to fill out the form. This will get the ball rolling toward a real solution from BMW if NHTSA gets wind of this.
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Old 09-12-2013, 09:31 PM   #190
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My warranty runs out in November. I just scheduled my replacement next weekend. My wife's F650 is also cracked at the one year mark. Will wait until the warranty is almost up before getting it fixed.

IMHO, the bigger issue that should be brought to the NHTSA is the stator issue causing rear wheels to lock up (costs $900 USD for just the parts) while in motion...but wouldn't hurt to mention both...
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Old 09-13-2013, 06:33 AM   #191
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While we're on it ...
The burned headlight reflector does not improve the safety profile of my night-time riding ...
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Old 09-13-2013, 07:43 AM   #192
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Quote:
Originally Posted by joew_33 View Post
Hi All, My 2013 F700GS just turned 1 year old and also has a cracked gas tank on the right side. BMW was informed today. All of us need to go to the NHTSA site and file complaints as this is a safety issue. Just go to https://www-odi.nhtsa.dot.gov/ivoq/ and it takes just 2 minutes to fill out the form. This will get the ball rolling toward a real solution from BMW if NHTSA gets wind of this.
I filled one out for the tank cracks. Maybe it will help them fix the problem, who knows.
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Old 09-13-2013, 08:54 AM   #193
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Just picked up my 2013 F800GS a month ago, I only have 68 miles on it when I noticed the stress cracks. Reported to the dealer, BMW and the NHTSA. BMW acted like they have not heard of it. The dealer knew exactly what I was talking about.
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Old 09-13-2013, 09:07 AM   #194
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Originally Posted by BLUEBMW1 View Post
Just picked up my 2013 F800GS a month ago, I only have 68 miles on it when I noticed the stress cracks. Reported to the dealer, BMW and the NHTSA. BMW acted like they have not heard of it. The dealer knew exactly what I was talking about.
When it starts costing BMW more to keep replacing then it does to redesign and recall, that's when they will fix it.

I'm telling my dealer to order mine this week. I was going to wait and see if BMW was going to address the issue, but after seeing this thread, they've had plenty of time.

Time to start hitting them in the ol pocket book. I'll order a new set everytime I see a crack.
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Old 09-13-2013, 10:56 AM   #195
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330 miles on new 2013 F800. Stress cracks showing up on both sides.
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