trying to decide on wheel sizes

Originally Posted by Argos ohh and another question i have is why , on the rear tire aspect ratio , do people get a smaller size ....wont that mess up

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trying to decide on wheel sizes

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06-13-2009, 10:28 AM

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Caravanshaka

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Quote:

Originally Posted by Argos

ohh and another question i have is why , on the rear tire aspect ratio , do people get a smaller size ....wont that mess up the look/drive ? ie - 30 vs 25

front -255-30-20
rear - 305-25-20

The reasoning behind this is the second number in the tire size is going to be the sidewall height as a ratio of the width.

So, 255/30/20 = 26" diameter and 775 revs per mile
and 305/25/20 = 26" diameter and 776 revs per mile

The rear tire is nearly identical in overall diameter to the front, even though the sidewall height number is smaller.

if you want to compare tire sizes, use Tire size calculator

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