I have the toyo 275's on stock width gta wheels, I like them. They run kinda narrow, I replaced a set of 255's of another brand with them and the mounted width and profile is almost identical. I have a set of 275/55/15 et streets mounted on 9" wheels for track duty and the tread is almost a full inch wider (not due to the increased rim width, the tread is just physically wider). They would probably look a tad better on your widened gta's, I too was bummed out they stopped making the 295's, I was planning on getting the rims you have and going with those tires. Grip is awesome, and I have about 3500 street miles on em and theyre holding up nicely. No track time on them but if aired down a little they should stick well. Sucks there arent many options for rubber in this size