woa woa woa... it all depends on if its a 2wd or 4wd. a 2/4 drop on a 2wd is like a 4/6 on a 4wd. mine is dropped 2" in the rear and they aren't close to rubbing, even with 1200+lbs over the axle.

 

NO NO NO Before my truck was bagged i had a western chassis tech 3/4 drop which constited of drop springs up front and shackle-hanger combo in back. I had goodyear eagle gt2 tires (275-50-20) and NEVER EVER rubbed.