Im putting ZR1 wheels, with 275-40's all round on my 93Z28 with a eibach 2in. drop, will the front tires have a problem.

dave,

 

im running all that but without the drop...and not a single rub even at high speed turning

im getting the same drop soon though...so i'd like to know if it'd rub as well

 

im running 275-40-18's all around and no rub whatsoever.... id say i could get away with a 1.5" drop but 2" im pretty sure you'll have to "massage" the fenderwell a bit

 

You will not get any rub. I'm putting 17x11's in the back with 315's, I'll need the BFH mod I'm also just dropping it 1"

 

I had the front of my Formula down 1.8" for a while, and the 275/40-17's on 49mm offset wheels rubbed on the plastic fender liners at full lock. The 7mm difference in offset with the ZR1 wheels (assuming you got the 17x9.5 56mm wheels) might just be enough to eliminate that problem. Backs will not be a problem.