Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

Differnce with speedo between...

Old 02-18-2009, 01:59 PM
  #11  
Starfury
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Ya know, I calculated for % difference in tire height (which I did correctly, thanks Million:P), but not circumfrence. Teach me to try to do math right after I wake up...

Rangoon got it, though
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Old 02-18-2009, 02:50 PM
  #12  
MIL1ION
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Originally Posted by kalli
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

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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