Here's a couple of photos of my new GTA/Buick GN 16"X8" wheels. I've got 255/50-ZR16 tires on the rear. Presently, I don't have spacers on them. While the tires to clear, the clearance on the inside at the top next to the frame rail is very tight. Almost 1/4" on one side but only about 1/8" at the other. I don't have a feel for how much the suspension can move under driving conditions and whether it will ever rub. I did jack one side up and they still clear. Jacked the other side up and still clears too. So my question to the experts is whether I should put spacers on it?. If so, how thick? Plenty of clearance on the outer side so no worries there if spacers are needed.