What happens if I use LT245/75R16 tires on my 2006 H3/hummer ?

Asked by Jun 17, 2015 at 04:32 PM about the 2006 Hummer H3 4dr SUV 4WD

Question type: General

1 Answer

98,485

Stock size is P265/75R16 tires. Normally you should only go 1 size up or down. So the 245 is 2 steps narrower than the stock, but as you went with the LT series you have a heavier duty tire than the stock, so it should be able to handle the weight of the rig alright. You may have to compensate for some speedometer misreads and your fuel mileage might drop some, but as long as they are LT tires there should not be any problem.

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