Tire replacement

[AznSensation87]

So about two weeks ago, I wound up getting a flat tire on my passenger front due to my valve stem leaking air. I didn't know my tire was flat at first, and wound up driving on it for several miles (maybe ~6-7 miles?). I eventually got the valve stem replaced and now it drives fine. However there is some questionable sidewall damage on the tire, so I am looking to get it replaced just to be on the safe side, as I will be participating in some rallies this year.

My main question is...can I replace just the one tire with our Quattro system? I currently have Michelin Pilot Supersports and was told I still have a good amount of tread left (new is 10/32, my fronts and rears have about 5 or 6/32 left). I would like to use my remaining tires if possible if replacing one will not cause damage to the system. I've asked multiple places, where one shop said I would need to replace at least two tires, an Audi dealership said replacing one would be fine, and reading online it says all four should be replaced. So which should it be??

[pfft]

I guess this is situational and dependent on remaining tire tread.

I've replaced just one tire. One of my stock Continental DWS tires hit a pot hole and caused sidewall damage. My tread was plenty fine on my other tires to just replace one.

I guess the question is, is there a standard tire tread level that the remaining tires should be at to warrant 1 tire replacement. I don't know what that would be.

[evanb]

You can have the new tire shaved to match the remaining tires.

[mungie]

I had a similar situation . Ended up replacing two to have a matching axle. Now I'm not worried about flats due to having an extra used tire in storage

[BigBluu]

How were you able to drive that long with a flat and not know it? Did the TPMS warning not pop up on the dash?

[AznSensation87]

How were you able to drive that long with a flat and not know it? Did the TPMS warning not pop up on the dash?

The TPMS did go off, but idiot me decided to ignore it because I had just gotten my summer wheels put on, and knew that I forgot to reset the tire pressures into the MMI system, so I thought it was just that. I noticed because the car was drifting to the right, but I thought maybe I needed an alignment or something. It wasn't until I got home and just happened to look at my tire and saw that it was flat.

[LYKUNO]

Tire Rack has several articles discussing replacing damaged tires on AWD vehicles. Worth a read if you're thinking about replacing a single tire and the others are worn.

http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=18&affiliate=TY2

http://blog.tirerack.com/blog/yokohama-s-drives-on-pch-1/replacement-tires-for-awd-and-four-wheel-drive-vehicles

http://blog.tirerack.com/blog/todds-tire-decision-guide/replacing-one-tire-on-an-awd-vehicle

[Acejam]

What's more expensive - an entire set of tires, or an entire driveline? [:d]

[kcobourn]

Just had the same exact situation. Call Michelin to explain the situation they ought to goodwill some $$. They credited me $137/ tire (A/S3s) that were about a year old and had 6/32nds left.