Yep, Rotate the tires, cupping happens...For Unimog owners - inflate and rotate! Unimogs cup front tires even when they are set up totally correctly. The only way to reduce this is to frequently rotate your tires and make sure they are not under inflated. Also make sure they are properly balanced (not just with balancing beads) - it will significantly add to their life. Like Scott said, these tires do not like heat and are speed rated for 62mph. They will tolerate higher speeds but I wouldn't recommend towing or hauling at 75+ mph for extended trips, a moot point with Unimogs but perhaps an issue with full sized pick-ups.
+1Anyone with an older Ford 550 with the solid front axle have comments on the MPT? I'm in the middle dust of a 550 build and am hoping to convert to SRW with the MPT's. Anyone have experience with siping them and how that improves performance on snow and ice?