Quote:
Originally Posted by nZtiZia
the circumference listed is the rolling circumference which is not perfectly round due to vehicle weight, so there is no direct correlation between that and the diameter. while the 20” tire technically has a larger rolling circumference of 0.3” than the 21” tire, it will not make a visual difference.
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They didn't change the definition of circumference.
. All measurements/calculations are done off of a vehicle.