Basically a 30x13x15 drag radial. I ended up moving my axle back 1.25 and lowering the car about 2.5 and it still fits good but I cannot go any lower. I thought the us car tool was the easy button so I used them as well but after the experience to me the easy button is get big honking tubs and fit/weld them in lol. And I don't care about the stock look either or I wouldn't run a chevy- I mean cowl hood.