Contadino

Hi all, I just bought 4 Michelin PS4S tires. The 245s are date coded 4518 but the 305s are 0118. The tire shop said 305s aren't that common so that's why they are older. BTW they are N0. Do you think tires that are from 0118 are too old?

Al.Fresco

How many miles a year do you put on them?

3Series

My understanding:

245's - Built the 45th week of 2018 (November 2018)
305;s - Built the 1st week of 2018 (January 2018)

Since both were created in 2018, I don't think they are old.

Tracking the car - No issues, you'll use them up quick
Commuter Car - depending on how many miles you drive, you shouldn't have an issue
Weekend Car - if you want to squeak out another year and you are fastidious about keeping your tires less than 5yrs old then you've lost a year with the 305's.

All in all, I wouldn't worry about anything. The tires a new enough.

996AE

Dealer installed new Michelins on my P car in Jan 2017 with april 2015 date codes on them. I didnt even think about checking date code. About six months later I added spacers to my ride and thats when i saw them. I asked the Dealer about it and they said I should have said something at the time. To late now.

I guess no rules on new tire date codes.

fast1

The only dangerous scenario would be for a car that is driven just a couple thousand miles a year, but is driven once or twice a year on the track. After six years, the tires would be seven years old and may have a lot of tread on them, but could be problematical on the track.

Contadino

Don't plan to take this car on the track. I'm just going into retirement so hopefully will be driving it more. Maybe 5-6 thousand per year??? Shop said they are allowed to sell tires up to 7 years old but they would send tires back that are older than 2-3 years. I'm not going to worry about it.

LexVan

You're fine.

golfnutintib

7 years is the 'by the book' tire dating life

991.2 GTS

Tires are made in batches and warehoused. A small batch would be 10,000 pcs (normal batches are around 100,000) so I could see where a specialized low volume NO tire would not be produced that often causing wider gaps between date codes even at the manufacturers warehouse.

Al.Fresco

You’ll wear down those rears in 2-3 years. They’ll be just fine.

bkrantz

In addition to the manufacturing date, the other control on tire "age" is the date of the first real heat cycle (and the number of cycles). Once you mount these, and go for the first spirited drive, their age will be more in sync.

SKM

Not too old. Most Michelin tires for Porsches are over a year old when you get them. Not much demand and takes a while for them to get here. It is pretty ridiculous, but true.

SH2

This thread Is very helpful, I purchased a “new” set of winter tires and OEM rims a few months ago, l never looked at date codes nor did I even think about it. The priceI paid for all was approx half the retail of the rims only and was told by the seller that the set was likely 5 or more years old. They appear to have been properly stored, I’ve driven > 1500 miles this winter without issue, do I really need to run out and buy a new set of Alpins for next years winter season?

drcollie

Six years is the industry standard for tires.

911boy

Up here in Ontario there is no law/limit as to age, only condition.