I used to run 35x12.50 MT/R's (the "old style", obviously not the ones Goodyear just introduced...so if you are talking about the new versions this is all a moot point). While the MT/R's were comparable in size to other similar tires like the BFG mud-terrain, they were substantially smaller than the 36x12.60 TSL or Irok that some of the guys in the club had.
I don't really do any mud-bogging but all of the trails here in Ohio have some mud you have to deal with no matter how dry it had been out. While I liked the MT/R's overall they were no comparison in mud to the TSL's I switched to. A couple of other guys have also switched from MT/R's to either TSL's or Iroks and will also say the same thing.
Anyway, I would say the 37" MT/R's would not cause any additional stress (in fact, maybe less stress/strain) on the front axle than the 36" TSL's because they would be lighter, less aggressive, and likely not any larger if you actually measure them on the truck.
I don't really do any mud-bogging but all of the trails here in Ohio have some mud you have to deal with no matter how dry it had been out. While I liked the MT/R's overall they were no comparison in mud to the TSL's I switched to. A couple of other guys have also switched from MT/R's to either TSL's or Iroks and will also say the same thing.
Anyway, I would say the 37" MT/R's would not cause any additional stress (in fact, maybe less stress/strain) on the front axle than the 36" TSL's because they would be lighter, less aggressive, and likely not any larger if you actually measure them on the truck.
