Excessive rear tire wear.....?

[Retroman1969]

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.

[Peer]

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

-- peer

[jdraupp]

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

[particlewave]

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

[JayG]

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

[Retroman1969]

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.

[jsceash]

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

[Smallblock454]

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. Street use only.

So i think everything is OK with your tires.

Regards, Markus

[Steve Tinker]

Originally Posted by jsceash

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

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

[Pdwight]

Originally Posted by particlewave

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

Echo that PW

[Retroman1969]

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!

[thstone]

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

[njbray]

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

[jb92563]

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.

[particlewave]

Originally Posted by Pdwight

Echo that PW

Originally Posted by njbray

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

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

[Retroman1969]

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

[rick3000]

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.

[Giller]

Originally Posted by Steve Tinker

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

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?

[rick3000]

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

[geetee]

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