2019 Model 3121 RL Tire question

[Steelers!]

I purchased a used 2019 3121 RL with mostly worn and dry-rotted tires in May of 2024; . I replaced with new G rated Sailun tires. During my 17,800 miles of travel over 192 days, I verified and adjusted tire pressure each time I moved on from one place to another as I traveled with a porter cable 6gal compressor. I maintained tires at 110psi. I started noticing 1 tires showing a bit of wear on just the outer tread on right rear tire. I rotated tire with right front and continued to monitor to see if axle related or tire. Well, eventually all 4 tires showed the same wear where all outside tread wore more that other parts of the tires. It was not a lot of wear, just enough to not show the little squiggly seep type groove disappearing. The tires now have 18K miles on them but look pretty good. The breaks have been inspected at the beginning and with each tire rotation and look good. Hubs removed, cleaned, inspected, serviced with all new seals, and the 14 zirks replaced and greased along the way.

Thoughts or advice?

Thanks,
Tom

 

[RMcNeal]

Sounds like it may be normal wear. That outside edge tends to wear faster, especially on the rear tires as they drag in tight turns.

 

[Carl n Susan]

I am with RMcNeal's thought (above). I am on my third set and they all have have worn the sipes off the edges. There is plenty of material on the edge and it hasn't been an issue.

 

[Steelers!]

Thanks RMcNeal and Carl for the great feedback!

 

[Mikelff]

I am with Carl. I have same wear on my Sailun. If you check the inside edges you will probably see similar wear. This is “scuff” wear from making “tight” turns, like right and left corner turns. As you go around turns your tires flex and edges grab the road and take on much more wear than the center of the tire. This is normal and like Carl mentioned, the outside and inside edges have thicker tread to compensate for this wear. Inflating to 110 psi cold, as you do, will help reduce tire wear, run cooler, trailer rolls easier helping your mileage. It is NOT necessary to rotate your tires unless you are having significant tire wear issues on one or two wheels compared to the others. In this case you need to have an alignment checked. Otherwise, no worries.