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#1 |
Registered Member
Join Date: Jun 1999
Location: Columbia Co, PA
Posts: 303
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![]() try this math from the FMS 2002 catalog:
(drive gear teeth X axle ratio X tire rev per mile)/1000 = # of teeth on the driven gear. (7 X 3.55 X 815)/1000=20.25 ==>black 815 is rpm for a 225/60-15. TireRack has pretty good info for finding rpm for your particular brand/size. for T-5: 21T = red 20T = black 19T = pink |
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