View Single Post
Old 09-09-2021, 05:31 PM   #12
pjmoreland
Senior Member

 
pjmoreland's Avatar
 
Join Date: Jan 2005
Location: CA
Posts: 6,235
Re: Mismatched tire diameters...

Quote:
Originally Posted by geezer#99 View Post
It’s quite easy stuff!
Now, I’m still having a need to figure out the metric time conversion. That ones a little harder to do in your head.
Ha!

Then there's the manual method of measuring out the distance the tire travels in one revolution. I did that on my truck and it came out at 26-1/4", even though the calculated diameter is 27". I used the measured diameter for selecting my speedometer gears. I tested my odometer over a 10 mile drive on the freeway, and it ended up dead on. Hopefully it will stay that way for a while, depending on how heavy my foot is.
pjmoreland is online now   Reply With Quote