Here's the one thing they didn't say on the video, which may not require the change of tires. Cases in point: The 98 motorhome sits is storage for a lot of the time, with only 55K on the odo. Two years ago, I had to replace 7 original Michelin tires on it during our trip from "Hell". I didn't have to replace the front two, they were done a year earlier. The monza has tires on it that are possibly 10 years or more old, They are of the "Winston" brand that went out of business a long time ago, and they just "keep on keeping on" The rears are getting close to smooth again, got watch out for those "Banzai Starts" . IMHO if you drive the vehicle almost daily, they should go the distance regardless of the age, it's the ozone and UV rays from sitting that does them in. Then again maybe I'm just lucky, or there is a difference between 20K lbs on 8 wheels versus 2800 lbs on 4.