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Old 12-02-2012, 07:06 PM
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57hemisport 57hemisport is offline
Dodge Ram Forum Member
Join Date: Apr 2011
Location: Chicago IL
Age: 31
Posts: 64
Gender: Male
Vehicle: 2009 RAM 1500
Trim Level: sport
Color: brilliant black
Engine: 2009-???? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
57hemisport will become famous soon enough

The psi in the door jamb is for the stock 275 60 20, which is 35 psi cold. I know there is a formula using the weight of the truck and the load index of the tire. Both tires have totally different load index. I just don't know how to figure that out.
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