what kind of tires are on your beast?

 

When i have to replace tires im going with bfg KM2's 100% sure! Right now i just have some that someone was selling for cheap off craigslist. 35" Hankook ATm RF10 maybe. There all right not a bad tire but def not a bfg either.

 

I am old school and can't stand the metric system, especially for tires, it is confusing as all hell. My understanding is that the first number (325) is the tire width in mm, the second number (60) indicates that the section (sidewall) height (distance from tire edge to rim edge) is 60% of the width and the thrid number is the rim width. So the actual tire height (what we are all intersted in) is the section height x 2 plus the rim width.

OK, per a metric tire size calculator found here: http://www.tyres1.com/Calculators.aspx
325x60x18 = 33.4x12.8x18
285x65x18 = 32.6x11.2x18

So, the 325's are not even as tall as the 35's many of us run with a leveling kit. The only problem you may have with those is they are 12.8" wide which is pushing it for the factory wheel. I run 35x12.50's on the factory FX4 18's and that is about as wide as I would go. When a wide tire is mounted on a narrow rim, it pulls the sidewalls in causing you to drive on just the center of the tire. Is .3" going to make a huge difference, probably not, but I doubt that the factory FX4 18's are wide enough to satisfy Firestone's recommended minimum wheel width which may have an effect on any warranty or road hazard protection you get with them.

For what it's worth, a buddy has the Firestone Destination M/T's on his truck in factory size, while they look great) they are loud as hell humming down the road, waaaay louder than my 35" BFG KM2 MT's.