When I got the Kumho's, I was a little leary about the quality for the price. I paid less than $170.00 per tire. I think they are great and I have since talked to a few tire dealers and they have heard nothing but good thing about them.

I never realized there were so few 8R19.5's. Rickson only lists tires from 3 manufacturers and only 2 are M+S rated.

 

Do you have a part number on the GM wheel?

If I had been a little less lazy - I would've/should've/could've gone for a dually conversion AND 19.5"'s instead I just went for another set of Ricksons.