Quote:
Originally Posted by BrazilianE70
Dunlop Sportmaxx SP "325/30/R21 REAR" and "285/35/R21 FRONT".
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This is fine, revs per mile are 723 front and 728 rear, under 1% difference.
Quote:
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315/35R20 REAR and 275/40R20 FRONT.
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You dont list a tire model but a continental DWS these are BOTH 724 revs per mile, so perfectly matched.
You will note I dont discuss diameter- the revs per mile is MUCH MORE PRECISE.