I'm gonna return my MTRs. For those of you loving the Toyo / Grapplers, any problems with them being rated (load wise) for such a bigger/ heavier vehicle? Can you air down in the low teens and still bend/grip on rocks?

 

I run the Toyo 35's and have been very pleased. I've got 45k on mine and could probably get another 10k out of them. Off road they have been great. I air them down to 12 psi and get plenty of flex.

 

4 out of 5 guys in our area running the MTRs developed death wobble - they all had a very difficult time trying to keep them balanced. One friend (now happily running Trail Grapplers) has a theory that the asymmetrical thread design is at the root of the vibrations/shimmies that are the trademark of this tire. Don't know, but after the suffering I've seen my buddies go through, I know I won't be owning a set.

For what it's worth, they were impressed with the tires off road, but not enough to warrant tolerating the horrible on-road balance issues that characterize this tire.

 

Well I'm going to order my tire tomorrow so any input on what I should get I have 5.38 so I'm wonder stay at 37s or move up to 40s. I'm looking at the following
39 IROK radial
40 or 37 mud grappler
37 toyo

 

x2

I guess I've been very fortunate to have located ones that balanced well from day one. I wheel them hard and rotate them every 3k.

I now have just under 15k on them and they're still working well. Had I read this thread, I would have never purchased them.

 

Ok, so after dealing with the 35" mtr\k's and the wobble for a while, I finally got fed up and starting changing out my steering stablizer, trackbars, shocks, and so on. These things fixed the wobble to where I could at least drive it over 30mph, but there was still a wobble around 45mph. Today I went and had 37" toyos put on and my jeep didn't wobble at all. The previous ride with the mtr's was brutal. Doesn't feel like the same jeep anymore. Today is a good day. By the way I like the look of the mtr's the best out of any tire, just couldn't deal with the wobble and yes I did try to have the tires balanced multiple times with no luck.

 

I wonder if some of the problems with the Mtr's is due to the assymetrical tread pattern?

 

I have put 3k miles on my 35x12.50r15 MTRs and have had zero issues....tires do not cause death wobble unless the tires aren't balanced properly or you have a bent wheel....

 

As I stated upstream, that's what a friend of mine believes. More specifically, he thinks the large lug gaps on one edge of the tire, with smaller lug gaps on the other side of the same tire possibly contribute to creating some weird harmonic resonance that slowly causes the Jeep front end to come apart (i.e., trackbar bolts, ball joints, aftermarket bracket bolts, control arm bushings). He was constantly having to re-torque all the bolts on his axles.

Caveat: All the above is wild eyed speculation - could turn out to just be abysmal quality. I wanted a set of 37s so bad, but am unwilling to play Goodyear's version of Russian-roulette with $2000.

 

I never understood the thinking on the design. The all terrain patch just doesn't make sense, these are supposed to be mud terrains. I believe your friend is right. I ran a set of the old Goodyear Mt's which had a symmetrical lug pattern years ago, and they balanced well and did great off road