Quote:
Originally Posted by LiveLarger
why is it 30/20 rear and 35/20 in the front?
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The middle number is the profile of the tire and it tells the sidewall height in percent of the tire width.
So in the front 245mm*35% = 85,75mm
and the rear 285mm*30% = 85,50mm
as you can see those two sizes will have a very similar tire sidewall and diameter.