This was about 5 years ago, for what it's worth. Bought a full set of new, high quality tires (Continental) from Chet's, paying a premium price. I know, I know, should've gone to a tire retailer. Thought it would be worth it for the convenience of overlapping the visit with my annual synthetic oil change. Three weeks later, I found one tire had a slow leak. When I returned to Chet's, they charged me for a "puncture repair" ($25, I think), plus two hours sitting in their waiting area. Slow leak remained. Two months later, took my car to the dealership for a recall repair. Asked them to fix the slow leak in that same tire. They found it was a faultily installed valve, not a puncture. I asked if there's any puncture repair. They didn't see one.