s26singh

My right rear tire picked up a large nail very close to the side wall - tire needs to be replaced. Car itself has ~3900 kms (~2400 miles) on it.

For the tire experts among us - should I replace both rear tires or just the damaged one?

Tread wear is average and as expected for this mileage; tire is the OEM MO1 Michelin PS4S.

bobblehead

No need to replace the other one. IMO. So little wear.

2012 merc amg

If your near Rhode Island I can sell you a rear tire that has 10k miles on it for 75 bucks. I had the same thing happen as you when the car had 10k miles on it and saved the good tire in my garage last fall. I’ve since gotten rid of the car.

s26singh

I live in Toronto. Thanks for the offer.

Tire is being replaced as we speak; following @bobblehead ’s advice - cheers!

19E63s

Yeah only 2400 miles I'd say you're good.

hailbop

Thanks for the replies. I definitely don't drive the car aggressively which is why this is so disconcerting. I don't have pictures as the car is at the dealership. I still don't know how I wasn't told anything about the tires at 10k miles and then all of a sudden at 13k they are critical and need to be replaced. I may take it to a private shop for a second opinion as I'm a bit skeptical of dealerships in general.

2012 merc amg

That’s pretty normal with these cars having to replace tires at 13k miles. That’s about all I use to get out of tires especially the rears. These ultra high performance tires are softer rubber for good grip and wear out faster, the price to be paid for driving a more sporty car.

Gr8 Ape

Just out of curiosity, I was told once by the store of a major tire company that, if one tire was in need of replacement on an AWD car, all the tires needed to be replaced due to the symbiotic relationship of the wheels in AWD. I’m interested as to whether this is a valid consideration.

I ended up buying a new tire and having it mounted at the Mercedes dealership, who had no issue whatsoever. I was fortunate in that, like the OP, the wear on the opposite tire wasn’t too great. However, the seller from whom I purchased the new tire offered to shave it to match the opposite tire, if necessary. Something to consider if you don’t want/need to replace both tires,

VaserC63S

C63S needed new tires at 9000 miles. The stock tires were the Dunlop MAAX. Oh the rear brakes too were gone in that 9000 miles. Thats what all that HP does withe the 2WD cars where the brakes are used to torque vector a car with massive HP and poor traction. I put on the Michelin AS3+ tires on that car and for the next 18000 miles not only were the tires still fresh, but the brakes didn't need to be replaced, and that was twice the distance! All this down to the the much better traction you get with the Michelins. Where the ABS used to flash like a christmas tree, I rarely ever saw it flash with the Michelins.

VPC_E63S

So someone who sells tires for a living told you this? LOL.

b0rderman

I can recommend this site highly: https://www.bestusedtires.com/

After 12 years in Colorado, I came to find that it is the perfect place to dry up your tears when you need to match a specific mileage Nokian for your AWD vehicle.

I have met a real breathing human that did have major issues with traction control and differentials after trying to mix three 15,000 mile tires with one brand new tire.

I would not lose sleep on tread wear deltas lower than a few thousand miles however.

78degrees

On some cars this is an issue, on other cars there is no problem with different wear.