Excessive rear tire wear.....?
 

Well my daily driver got another service, and another clean bill of health, however the shop said: "Only thing is, you'll want to replace those rear tires soon".
Really? I put on a new set last spring! However they probably have 20,000 or so miles on them. I know from previous threads that these cars are hard on rear tires. So is this typical of the amount of life I can expect? No biggie, but just curious.
I should add that I had the suspension and alignment set up to favor tire wear over handling.
And the shop also pointed out I was running them a bit under-inflated. I have been running them 27 psi F, 32 psi R. I have corrected it to the factory recommended 29 F, 36 R.
http://i286.photobucket.com/albums/l...pso0akovyo.jpg

http://i286.photobucket.com/albums/l...psfclgrzed.jpg

I use 3 sets of rear tires for every front set -- i.e., the fronts last 3 times as long.

-- peer

If you got 20k on rears, you're lucky.

Wait a minute....You've got 20,000 miles on those, they look that good and you're calling that excessive? Ha! :)

20k is a long time for rear tires

also the factory tire pressures are calculated to add understeer

if the tire is wearing evenly, it is not over or under inflated

Thanks for the responses!
I'm thinking too "conventionally" again. ;)
I'm used to my regular cars over the years where I can average 35,000-45,000 miles per set of tires! But none of them have been performance oriented. :D

It still looks as thought you may have some alignment issue maybe a small amount of rear tow passenger side

I had a set of Michelin 265/40/18 Pilot Sport 2 rear tires that lasted 8.000 Km (4.970 miles) - than they had 2-3 mm profile. :D Street use only. ;)

So i think everything is OK with your tires. ;)

Regards, Markus

^^ I agree ^^
In the first picture, the inner tread has worn much more than the outer....
Just compare it to the LHS tyre.

Echo that PW

I'll have the alignment checked again. ;)
I've had the lower control arm replaced on the driver's side, but the passenger's side is still original and beginning to make a little noise. That might be the difference that's causing the harder wear on that tire.
Thank you guys again for your input! :)

20K? I never got more than 8K miles from a set of rears on the street. You're good to go! :)

20k - that is pretty good.
My Potenzas are down to the wear bars at 13,000 miles! And I have enjoyed every on of them! Lots of canyon carving and blasts up Highway 1:)

You haven't even reached the wear bars yet.

I don't think my Hankook V12's had that deep a tread when brand new.

I'd keep driving those and check every 2k miles to see how they are holding up.

I guess if you get rain you may not want drive them past the wear bars.

My latest set are Bridgestone Potenzas...they are at 12k miles and need to be replaced. :rolleyes:

Wow, I guess I need to change the title to: Excessively Low Tire Wear! ;)

I go through two rears for every front, probably about 15-20k miles on each set of rears. I would advocate buying and storing the extra rears. Twice now I have had to replace all four because for some reason the 255 rear size is always getting discontinued. Since it is your DD, you might be able to get a few extra thousand miles if you go with a less performance oriented tire like High Performance or Performance instead of Ultra High or Max Performance.

I understood that is normal on a Box, as the rear tires have a bit of an angle to them. They don't ride straight up and down, so logic says they should wear on the inside much faster than the outside?

Mine wear the same way, the inner tread goes first. It can be misleading because the edges of the tire will look fine.

not too bad but you can get a little better wear with less toe in the rears.