There's a well documented post on the r1200rforum.com site about rust underneath the red fuel filler neck assembly that sits in/on the tank. Rather than post my own photos I've included the link: http://www.r1200rforum.com/forum/bmw-r1200r-maintenance-do-yourself-12/must-3018/
This was easy...
This is the first year with my new F650GS. I have outfitted her with side bags and top case but I need a tank bag. I tried one with suction cups but the finish on the tank wouldn't get the cups to adher. I have found the Nelson Rigg 8 liter bag but I don't know if it will work. Any suggestions...
Howdy. My '86 K75C goes about 100 miles before the low gas warning light comes on. I get about 40 mpg so this means each time I put about 2.5 gallons. The manual states that the tank holds 5.6 gal. Additionally according to the owners manual the light comes on with 1.3 gals left in the tank...