I just got my American racing Cannons, But I haven't put them on yet. I did a lot of reading of postings and figured that the 17x8.5 with a 5 3/8 backspacing would fit my 305-70-17 terra grapplers with just minor modification at the most. But some are saying that the had to ground down their brake calipers for the wheel not to rub it . Has anybody ran into this with these wheels or is it a hit or miss thing. I think that the Atx series wheels are the same thing as the cannons.