Thanks for the replies
Bolt pattern and hub are all good, I tried one on the back
I will try one on the front to make sure it's not rubbing.
My spare is 265/70R17. Like I mentioned the only difference is, i think, the 08 to 13 had 7.5 inch width then they switched to 8 inch width from 14 up, As said I think
Not sure what year Sierra they came off
I'm like a racoon I like shiny things including wheels, the alloys are not hard to clean with ceramic wax coating on them.