Got the Nankang NS-25's (255/35/ZR/20) on with index marks aligned with valve stems. Took only 1/4 ounce each to balance. Made sure the pull stripes were properly offset. Traction AA Temperature A Treadwear 500.
Local alignment shops declined to accept the Mustang because it has been lowered...which isn't really a bad thing since they often perform substandard work.
This was lowered with a factory Ford Motorsports kit....not a hack job. I installed Eibach offset camber bolts for correction.
Keep in mind alignment tolerance is ridiculously wide!!
On this chassis, the camber specifications are 3/4¤ positive to 3/4¤ negative.
I pulled out my old alignment gauge and dialed in 1/2¤ negative camber on both sides, which is about all I can get.
Then I looked at the toe specs - 0.10¤ + or - 0.20¤ respectively. Working this out, with a 27" front tire, that's a huge spread - from 3/32" Toe Out to 9/32" Toe In.
With the help of Quinten, we dialed in 1/8" (.125") toe in and drove the car. I marked each tie rod with magic marker and shifted both wheels equally until the wheel was centered, then reconfirmed toe in.
Drives really great!!!!