I have an 04 FX4 with 18" rims. I'm looking at new rims (rockstars) and have found websites that say they will not fit on my vehicle and websites that say they will. The ones im looking at are 18x9 with 6x135 bolt pattern and no offset. Also would like to know what size tire would fit without any lift/leveling kits. Any info would be appreciated as I have not been able to find the answers on my own.

 

275's is probably all you can get(stock)

 

You can fit those on your truck with a 33x12.50 and have absolutely no problems IF you have a leveling kit. Look up member KR Texas. He has that exact setup......

I'm not sure what you can fit w/o a leveling kit.