A couple of months ago I purchased 4 Michelin XZE 245/70 R19.5 tires with rims. One of the main reasons I purchased these tires was because I thot I could get more miles out of them. I have 12,000 miles currently on them and at the rate they are wearing I probably won't get 40,000 miles. What are your experiences with the 19.5 tires? I went back to the dealer and also called Michelin and they both said there was no mileage guarantee (which I knew) and they had no idea how many miles I would get with my application. Half the time I have my camper on and the other half I drive empty probably half on freeways.