Thanks, Rob, for the correction on my vocabulary. I need to find a diagram that shows the names of all the parts to the suspension, brakes, and axles. I have been getting lost in the lingo trying to follow all the great posts in this category. I cannot see or feel any cupping. The wear seems to get evenly and progressively worse from inner to outer shoulder. It came on very suddenly and I worry about a blow out just making it to a repair shop from my storage lot. I would post a photo, but can’t figure out how to do it on this list serve. Advise to fellow RVers: stay clear of Highway 98 between Canal Point and its junction with Southern Blvd west of Wellington in Palm Beach County Florida. That road is badly TORN UP from decades of abuse by trucks hauling very heavy loads of sugarcane to the mill. If you must take that route, then keep your speed below 30 mph! While the hypotenuse of a triangle is always the shortest distance, there are other routes that will be much easier on your truck and trailer.
