Well, let me be the first to disagree with UPS34 and ichn2go. I think Michelin did botch it with the XRV's. I also believe they made a change to the XRV to "fix" the problem and I think the pressure change they issued may have been part of that fix.
You certainly are not going to get Michelin to admit to this since it has no desire to find itself in the glue like Firestone did with Ford products.
Freightliner didn't suddenly add GY to its tire option for no reason. MH manufacturers received enough complaints that they wanted to make sure they had an option for those who did not want Michelins.
If you visit the chassis makers who have added GY as an option and poke around a bit they might just tell you that "yes, Michelin had a problem with the XRV but it is solved now." I say this because I did and that is the answer I got.
2011 Itasca Impulse 26QP Silver, 2014 Jeep Cherokee Limited V6 Active Drive II