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i bought the truck with the 4.88 installed i dont have the stock 3.90.
a 235/75/15 is a 29 inch tall tire, that is way to small to help with my low gearing.
except for a few tires, the taller u go the wider u go also...
main use is 130 mile round trip to work, my drive is 65 miles each way of curvy two lane roads that have a 55mph speed limit. with the occasional off road trip, but nothing to hard.
yeah i am compesating for speedo error. the speedo says i am doing 62 when i am at 55mph according to the gps.
thanks.
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