jdgamble

I don't think it's remotely patchable, so here are the stats:

New rear tires about 5 months ago
Around 3000 miles on them
Michelin PSS
Edit - Tread on middle tread bar is mostly gone... this is very shallow tread
Not sure exact tread depth... proly 7ish but uneven across tire cuz it's a 911

So... is there a rule of thumb for when you can get away with one tire vs the whole axle?

Thanks.

motopix

3000 miles and middle tread is mostly gone? Are you doing burnouts from every light?

Given your description, I'd replace both.

jdgamble

The middle bar tread is super shallow. I measure between 7-8 32nds. They start at 10.

But to answer your question, I generally accelerate on the harder side. No burnouts. I just have to get there.

1990nein

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jdgamble

The shaving sounds time consuming. Any idea how long that takes? It's my daily and it's very inconvenient when my baby is out of service.

Petza914

What are you running for tire pressures. Center wear on a tire is usually caused by over inflation.

white rock

I have a tire to sell both passenger side with 1,000 miles

jdgamble

Depending on temp, I'm at 37-39 cold on the rear tires. We have some pretty significant fluctuations in NorCal tho, so they can get up to 42 hot. I know that's a bit high, but it's lower than the recommended and I kinda like the firm ride.

But seriously... assuming I have 7-8 32nds left, do I really need to buy two tires? I've seen many Carfax that show one tire replaced. Would 1/16" radius difference be any problem?

Johnny DB

I know what center thread you're talking about...wears out quickly.

jdgamble

You wheels look too big but thanks.

In summary... I had 8/32 remaining. Multiple sources said one tire is fine... including Porsche. Michelin has built in road hazard, so I have to pay $92 for a new tire. Not bad. America's Tire is pretty legit. They'll have a tire for me this afternoon. Case closed.

Edgy01

You're fine with one tire. 3000 miles is nothing.

Center wear is a sign of both significant UNDER-inflation and OVER-inflation.


(If under inflated the center is allowed to flex outward in response to centrifugal force), while overinflated causes them to wear in an accelerated manner.)

I think your TPs are fine. I run 33 and 39 with a light load at all times.