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Since this thread is all about our tires one very good question come to mind. has anyone been able to adjust the speedo with some sort of adjustment device for there tire size change?
Supposely the Hypertech and superchip tuners are able to make the change for you. I have the Hypertech tuned on my pcm but never messed with the tiresize change as I am still using the OEM sized tires.
great that is exactly what I need. Now will that also affect the odometer?
Any plug in tuner like Hypertech, Superchip, SCT should adjust tire size. After tire size is installed into the PCM then everything will be right on the money including the odometer.
I'm changing from 265/75R16 Yokohama Geolander A/T II (Load Range D)to 265/75R16 ProComp Extreme A/T (Load Range E). Air Pressures for the Geolanders were 32psi all around. For the ProComp, I guessing the tire pressures will be 35 psi. I just got the tires and still looking fo the full footprint. When I got the tires, the installer had the pressures too high. I'm lowering the pressures little by little until I see full surface contact on the treads.
BTW - Original tires were Goodyear Wangler P265/70R16 at 32psi.