I have been looking at upgrading the 265/75R16 Bridgestone tires that the truck came with. I have been looking at the Vision Type 81 PETE 19.5 wheels. They are machined aluminum, 7.5" wide and fit the eight lug pattern on the GMC. Before I do this, I thought I would ask about any potential problems with Duramax/Allison programming, Tow/Haul mode, ABS or any other issues I should consider before commiting to the $2K investment?



(This is duplicate post of the one I put up on the 2500HD-3500 trucks page)Edited by: Got Diesel?

No impact on the Allison. Worked great. Search for my other comments on 19.5's elsewhere on the forem.