[SentraSE-R]

I just took these tires off my xB last week. I ran them for 20,000 miles, and they were on the car when I bought it with 37,000 miles on the odometer. I don't know if they're the original tires, or a set of cheapies that replaced the originals.

Last week I would have said they show normal treadwear, despite being inflated to maximum sidewall (44 psi). Here's one of the rears, which still has about 30% tread depth. It looks like normal treadwear to me.

But then I noticed the two front tires were worn considerably more in the center - a classic sign of overinflation. Note the tread blocks right of center are worn to zero tread depth.


Here's a different view. First the best rear tire, looking good with tread depth deep enough to pick up pebbles.


Next, the worst front tire. Again showing significant center tread wear. There's not enough tread depth to pick up pebbles in the center, because the tire is virtually bald there (yellow arrows). Contrast the center with the outside edge areas in blue, which show about 30% tread depth.


I'm not buying the claims of those who claim normal treadwear with overinflation. It's not borne out by my personal experience. I'm sure some people do get normal treadwear inflating to and beyond sidewall pressure, but I've got proof that I didn't.

Three of my four old tires show accelerated center wear, indicating it's not an alignment problem.