Well, I'll be.....Pilot212, we have a matching pair!! We also have the Sailun tires. We just returned to CO from a trip through Alaska with our 2018 Road Warrior 427, throughout which I was diligent about checking tire pressure, lug nut torque, & greasing the axle bearings via the EZ grease zirks on the Dexter axles (DW rotated the tires while I pulled the trigger on the grease gun). I checked tire pressure & inspected tires on frequent pre--departure checks (300-400 mi. intervals). Most tires appeared to be wearing well (except for tires on mid-axle, which I'll get to in a moment). Going through the pre-departure check one morning I noticed the left (driver's side) rear (tri-axle) tire was worn just like yours, & 500 mi. earlier it looked fine. After talking with Dexter Axle about the problem the recommendation was to get back to the States to have it serviced in that !). it would be very difficult for them to help with servicing a claim while we were in Canada 2). It appeared there was no immediate danger in continuing to drive on with whatever problem was occurring other than continued tire wear. I replaced the tire with a new one (rather than using the spare) in Kamloops, British Columbia, drove the 1400 miles to home, & that new tire shows very little wear.....???? Go figure. We're taking the coach in to a shop in Denver (a Dexter Axle vendor) to have the axle issue diagnosed, but they're not able to get us in until the end of October.
Anyone have suggestions for cause of the second issue we're having...unusual tire wear on the mid-axle? Again, tire pressure diligently maintained at 110 lbs in all tires. Coach is a toyhauler, however only "toys" on this trip were two bikes, fishing gear, adult beverages,tools & extra 30lb propane tank (full).... ~500lbs max. total. Both the left & right tires are wearing excessively on both the inner & outer 1" of tires. I'd say low tire pressure if I hadn't been so diligent about maintaining 110 lbs, & front axle tires & right rear look great. ???
