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Dealer reprogram for larger tires?

2016HD

By 2016HD
in Modifications & Accessories

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2016HD Enthusiast

2016HD

Posted
Posted

Just wondering if i need to call the Service Manager at my Local dealer. Jut put one size taller tires on my new leftover 2016 Chevy HD> Guys at the counter said they can only program for O.E spec sizes??? Sounds like B.S to me! Im sure they can reprogram for a 3% tire size change?

Just looking for help on this before I get into it with the Service dept.

Thanks.

4x4Pete Enthusiast

4x4Pete

Posted
Posted

I wouldn't bother for one size up. It probably makes you speedo and odometer actually accurate. My old '01 became perfectly accurate when I went up one tire size. If you're not having issues, don't advertise you changed anything.

Keithm Enthusiast

Keithm

Posted
Posted

Don't bother. There are tire calculators online that you punch in the old size vs new size and it tells you how far off your soeedo will be. You'll see that going up one size will barely affect it, if at all.

I've gone from oem to 33's, 35's etc. I never bothered recalibration because even with 35's it's only off a cpl mph max at like 65-70 mph.

RyanbabZ71 Senior Enthusiast

RyanbabZ71

Posted
Posted

Just wondering if i need to call the Service Manager at my Local dealer. Jut put one size taller tires on my new leftover 2016 Chevy HD> Guys at the counter said they can only program for O.E spec sizes??? Sounds like B.S to me! Im sure they can reprogram for a 3% tire size change?

Just looking for help on this before I get into it with the Service dept.

Thanks.

Fact they will only program oe tire sizes has been like this for years

 

 

Ryan B.

Big Whiskey Senior Enthusiast

Big Whiskey

Posted
Posted

Yep, as stated, they will only program to OEM sizes. I just went through that with my new HD. Having them program to the largest OEM size helped a little, but my speedometer is still off 1-2 MPH at 60 and 2-3 MPH at 70.

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