Hey NCCommander, I ran 255/70/17 Firestone Destination A/Ts for about 62K miles WITHOUT spacers and they did great. I just recently bought 265/65/17 Falken Wild Peak A/Ts, again WITHOUT spacers. I wanted to go a bit wider but I also had to go a bit lower. So far they are doing good, I have not taken these off road yet. Either way they both clear the bolt without spacers and without rubbing.