How many miles on the tires? I just checked Lucille. In addition to the front tires having measurably more wear, less tread depth, it’s been 6500 miles since last service, I notice some of the every other tread block wear. I’m at about 38k miles, oe tires. I’m not what people would call a ‘gentle’ driver, I get about 95% street miles so far, 5% off road (but I’m working on that diligently to change those numbers). I didn’t get a chance to put the calipers on the tires but I do know there’s a pretty good difference in tread depth front to back and I back stopped it against the still unused spare. We can get more sciencey if needed but I definitely see some of it too. Now, it’s been... probably 15 maybe as much as 20k since last alignment. I have no wandering, pulling, vibrations, unusual drive conditions - none of that. No squealing of the tires around turns, or tell tale signs something might be up. Now, I didn’t measure my tread depth very diligently until recently and I confirm my center is wearing faster than outside. For a lot of the 38k miles, I was running 38F, 37 minimum and about 2-3 less in the rear, rotating at service intervals. I think there’s probably a combination of things going on here. Alignment starts out good, loses some tread and gradually goes a little out, tires wear faster up front due to weight bias an load, and I think we probably just need to rotate diligently on schedule. FWIW, I’m a sport biker, and pretty diligent about tire pressure - using my gauge, not the truck’s. Scalloped wear works for me. For that matter, other terms would too, I’ve just heard this referred to as feathering previously; right or wrong.