Differnce with speedo between...
2nd Gear Member
Joined: Jan 2009
Posts: 232
From: Alberta,Canada
you have the value twice on a tyre (38mm ~ 1.5")
the diameter is this value above the rim and below the rim + the rim size
so the values that are standing now in 65rangoons post are as exact as you could get them. it will still slightly differ from what the manufacturer will tell you about the circumference and revs/mile
the diameter is this value above the rim and below the rim + the rim size
so the values that are standing now in 65rangoons post are as exact as you could get them. it will still slightly differ from what the manufacturer will tell you about the circumference and revs/mile
I know, I only commented on Tire height from road to rim.
I never got into circumference because I didn't need to arriving at the..road to top of tire height.. is up to the other guy. You assumed I was supposed to provide that,when the guy just before as it turned out ..posted it.
The specs stamped on the tire are what I based my info ,that I provided.
Maybe manufacturers should start stamping circumference so people don't have to do the math and double the sidewall measurement ?
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