I have 2 different size tires. Should I put the larger on the front or the rear?
The wider tires should always go on the rear, better load carrying on a truck, the speedo is driven by the transmission on the tires but tire size will have a effect on the actual speed of the truck. You will have to do a speedometer check to see if it has any effect on actual speed compaired to what the speedometer is reading.
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