My Satellite was setup for drag racing, rear lowered. The front was not aero for downforce. Blamed the curve under the front bumper, but it was more likely the angle of the hood due to lowering the rear. At around 110 mph the front would start lifting making the steering wheel less and less effective. Really wanted 50's on the back and 70's on the front, but Dad would only let me put standard all seasons on. Even with those the setup hooked up well enough out of the hole it would bust motor mounts if you just stomped it. More meat in the rear and I could have lowered the front and steer at over 110mph. It was a real sleeper with those skinny tires and wire hub caps and pretty quick with a 383 and slap stick.
Dad used to buy a new set of tires before we went on vacation, or we got a flat. He bought Michelins. Firestones you got flats new or not.