andy4us said:When I did mine it went from being optomistic to accurate.
Do you happen to know what certain rpm's to mph's were before switching tire sizes? For instance my 04 says 65mph at 5,000 rpm in 6th gear. So if I changed to a larger front tire. I'd compare my new mph to what the engine 5,000 rpm displayed. You could do this for several different rpm/mph ranges before switching.Six Chin Skinny said:I have a 120/70 front in the garage ready to replace the stock 120/60. Will this change in tire size affect the speedometer? If so, how much?
Your mileage was less cause your speedo was wrong with the 120/60......... ???wacky_woodchuck said:I tried a Michellin Pilot Sport in 120/70 and it was good. Needed a little tweaking but was good. My main thing I didn't like (as I went back to the 120/60) was the fact my mileage was screwed up. The speedo, no problem. But the mileage was 10% less than it was before. And that really screwed with my head.
But... I do like it and will be going back to the 120/70 at some point and time.