Hi everyone.

I just ordered a new set of 20x9 front, and 20x10.5 rear bullitt rims for my '01 GT and now I'm looking for tires. The recommended tire sizes for the rims are 245/30/20 front, and 295/25/20 rear, but I'm wandering if other sizes will work cuz the 295/25's are expensive as hell. I've shopped around a bit, and found that 285/30/20's are a lot less expensive, but they are nearly 1" taller, and the rear wheels are too wide to use anything smaller.
First of all, I'm wandering if the taller 285/30's will even fit on the back as the car has been lowered 2" from stock, I'm also wandering if the 1" diameter difference between front and rear tires will cause any problems with ABS or traction controll. If the diameter issue is a problem, I could get 245/35's for the front to match the diameter of the 285/30's out back, but once again I'm not sure if they will fit.
If anyone knows anything about this, please let me know. Thanks.