I run LT325/60R15/C RWL BFGoodrich Mud-Terrrain KM
Spec'ed at 30.6" diameter at new. That's an 8mm wrench in that extremely masculine, but yet handsome, looking hand.
I bought the rims and tires separately online. Had them mounted and was sweating it all the way home until I installed them.
Like Chris said, a change to short torsion bars would have resolved any clearance issue, but I'm glad I didn't need to.
My experience with gearing with these tires is that there is a significant loss of top end torque.
If you plan much offroading, you will need to deal with this at the transaxle, not with horsepower.
Horsepower will help move the rubber, but it ain't going to solve your gearing troubles.
For street driving, I don't have much issue, until I get into the hill country, then I can expect to be down shifting a little more than I was with the smaller tire setup.
Good luck and keep us posted on what you end up doing.
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