I am running 235/75/15s on my ZR2 Tracker and I have no rubbing or any problems with mine and I have the ZR2 flares and no lift at all. I think changing to this size has given my Tracker a better ride and look. There is a picture of my truck in the ''Post Your Ride'' section. The Masterkit 1 looks like a good setup but with non metal spacers you will get a little bit smoother ride, with the Masterkit spacersit may be the same as stock or worse.