Birddawg1

I got a flat last night, by the time I realized it my psi was at 5, I exited and by the time I got to park it was at 1. I put the spare on and immediately after pulling out of parking lot noticed a grinding on that tire (left rear) especially when I turn. This morning I had the original tire repaired and replaced on truck and still same thing bad grinding when I turn. The paint on the inside of the rim of spare is missing like grinder off. What is happening!? I really didn’t want to tell my husband! 2018 GMC Sierra thanks!