hehe, that warranty I surely would make us of!

Will look into those R/T!
No, NEVER had any sidewall issue! A friend of mine with same car did blow up 2 BFG MT sidewalls! They just exploded after about 15-20'000miles! About same car weight.
The Toyo MT sidewall is very strong I feel, but the tire is really stiff! Especially in a leafspring car you can feel it!
Yes, I have to admit, we use it much more for rocks, gravel and sand than mud. We had some mud in Central, but since we are in south america there was hardly any mud. BUT when I buy the new tires we will go through the
Amazon, it's supposed to be a pretty adventurous, muddy trail! BUT I also have to say I have 4x Mud Grip Chains I could use if the tires aren't good enough. So far even with the Toyo MT I got stuck a few times in mud and sand. It's unbelievable how this weight will pull you down! So if it gets too muddy I think I will have to use the chains anyway, with or without an MT tire.
And we will drive afterwards to get back home about 8'000miles of mostly paved roads and back home it's also mostly paved with snow and rain!