I just changed to a 205-50-ZR17 car tire......ok before anyone tells me how dumb I am (and you may be right, but so far I love it. I can drag the pegs in 2nd gear, hammer the throttle, and it will not slide out from under me), I have another question. Since I put this tire on, my low fuel light comes on at about 80 miles. The only other things different are (a.) I put my modified stock exhaust back on. I cut the y-pipe where the front and back pipe join and welded a 2 1/4 inch collector pipe on, then that goes out to a Magnaflow straight-thru muffler. Sounds great, but I digress. (b.) I've been teaching my wife and son to ride so I have been doing a lot of slow and easy riding as I follow them. Could any or all of these changes made that much difference? The tire does weigh about 4 pounds more than the Continental I took off.