Quote:
Originally Posted by oldsinner111
I've checked different brands of tires they all have different outside diameters.Double check yourself O.D.
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good advice, especially if you're inclined to running with staggered rims.
my favorite tire interchange engine is
this one, and for the 235-40-18
it shows the circumference to be
79.5 which is what I really need.
just to be thorough, I asked the vendor to measure the tire I was
contemplating purchasing (235-40-18) and he came back with
78.5"
there is 'theoretical' and there is real life. guess there is no ISO standard