MARLIN--- That's super news!!! I was kinda' hoping you'd go huge and get the tall 285/75R18 (35" O.D.), but the 275/70R18 (33.4" O.D.) will be fine I'm sure. Everything I've read about them is outstanding with bullet-proof toughness (perfect for your kind of wheelin').
You ought to mount them White Letter "Out", so they show motion while driving and be showy while the VX is parked. You could also watch them rotate in the reflection of the big store front windows in the mall (that's always fun). Spending that much money on tires; I'd want to shout it out to the world, so mount 'em White Letter "Out"!!!
BTW-- Billy, there are two(2) types of G/Y "M/T-R's". The two(2) types are totally different and have different tread patterns. Which specific model do you have???
A: M/T-R
B: M/T-R with Kevlar