I only had enough money to purchase a couple of new Nitto NT 555 245/45-ZR17 tires on my Bullit rims so I could see em in the wheel wells and to se how they clear the 11.7" rear discs. Looks great! I also used Ford truck 1/2-20 open ended lug nuts,( The phord dealership wanted 230.00 bucks for a set of 20 Mustang GT lugnuts,,NO WAY DUDE,, I used Andy Finkbeiners advice and used a set of Ford truck open ended radiused ended lugnuts,,some call them acorn or bulge seat) and had at least 16 turns until seated so there is plenty of thread engagement.(you need the diameter of the stud in length 1/2-20/= 10 turns) it's sits a tad high but there is the fuel cell plus other equipment that will 'lower' it a tad when it's all done,, the ride height should be near perfect for my rough roads and numerous railroad tracks, potholes, ectt