Charlie, when you speak about an accident you should have your facts right.
-I was driving my u500 camper 21,000lbs @ 61mph on 15.5 20 michelins XL tires when I had a blowout. There are several reasons for the blowout & one of those reasons should concern you if you have CTIS.
-The 15.5's XL's were new & never mounted but spent a few years sitting around at 10,000ft.
-The CTIS system showed both rear tires having a pressure of 65 psi but it was incorrect. The inner bead lock had covered the CTIS inlet & was giving me a false tire reading. The tire that blew out probably had about 30 psi when it failed. It was 20 degrees when it failed & maybe 30 minutes from our previous nights camping spot.
-Tires were rated for 55mph & we were going 61mph. Since we were at half the rated load & it was cold this shouldn't be a problem unless the tire was under inflated.
-You are incorrect stating that the govenor had been removed; I never drive over 65 except for the time I tested the 16r 20 & hit 86 for a couple of miles. I used the 16r 20's for an extra ovedrive not to go faster. Get the facts correct before you post. I got 35k miles out of the XZl's without a problem.
-I have had four blow outs in Unimogs. Three have been at speeds under 20mph. Three have been Michelin's & one a MPT. I was four wheeling when I lost the MPT on a u1200.Two other blowouts were at 30mph & I had an implement on the u1200. All of the Michelin blowouts were on XL tires.
-I do not think Michelin has a problem with the XL tire but they do have a hop that is due to the tread pattern that could generate uneven heat.
-All of my unimogs are still running Michelins & I would never use anything else. Robert g