Wheels, Tires & Brakes Forum Where else do you go for wheel, tire and brake information?

information about rim/tires/sizes??

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Old 05-02-07, 07:46 PM
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2slow
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Default information about rim/tires/sizes??

i'm new to information about rims and tires n everything. for example what does all thiss mean :

20x8.5 245/30/20 - F Offset +38
20x10 275/30/20 - R Offset +42

i kno the 20x8.5 // 20x10 are the size of the rim and the width of the tire, but whats the 245/30/20 - F Offset +38 // 275/30/20 - R Offset +42. What is iFORGED? whats the difference between 2 piece and 3 piece iFORGED??thanks alot.
Old 05-02-07, 08:34 PM
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Seize
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Check out the "Wheel Tech" section on tirerack.com. It should answer all if not most of your questions.

http://www.tirerack.com/wheels/tech/index.jsp

Oh, and IForged is a wheel brand.
Old 05-03-07, 05:23 AM
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Brandon@TR
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Yep the wheel tech articles are great but to answer your questions quickly in

20x8.5 245/30/20 - F Offset +38
20x10 275/30/20 - R Offset +42

20 x 8.5 and 20 x 10 is the diameter and width of the wheel.

245/30/20 and 275/30 20 are the sizes of the tires that go on those wheels.

and the offset if the distance between the mounting flange and the center line of the wheel.
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