My truck
2010 FX4 - stock (no leveling kit)

I'm looking at an 18x9 wheel (XD Monsters) with a 35mm offset and 6.37 BS

What is the biggest tire I can put on this now without any rubbing?

Also, does that offset seem right to slighly bump the tires out of the wheel wells? (not looking for anything crazy here.)

Thanks

 

You could fit 33x12.50s or 285/70s, and neither of those should rub. And that offset will push the wheels out about 1/4" further that stock on each side.

 

Thanks for your help.

So basically 305's are out of the question? 285 would be the biggest?

 

I ran my 305x55x20 Nitto Terra's at stock height with no problem's on my stock 20's. The wheel's you described ought to work better then the stocker's.

 

305s are close to the same width as 12.50s, so yes, they would work.

 

I rethought the question and maybe a 285x65x18 may work out best at stock height with the 18's. These are close to 33x12 tires. Any larger may require a leveling kit to clear.