New tires, 1 of 4 has old date code...

just bought a new set of BFG KO2’s from Costco, one of the tires was much browner and drier looking than the other 3. Upon checking the date codes, I found this tire to be almost a year and a half old. The others newer than 6 mos. should I make a stink to Costco to get a newer tire?? Here are the date codes: Any tire installers here have input?

Driver Front: 4117 (10/9/2017)
Driver Rear: 4117 (10/9/2017)
Passenger Rear: 5017 (12/11/2017)
Passenger Front: 3816 (9/19/2016)

 

Yes. I did that at Sam’s many years ago and they made right immediately.

 

There is something I read a while back about "tire bloom" or something to that effect. It gives the tire a brown appearance and is indicative of a defective tire.

 

Here's a link to get you started. May not be a defect but rather an indication of age. Apparently tire blooming can be managed:

http://www.detailsmatterllc.com/tire-blooming/amp/

https://www.drbeasleys.com/blog/2013/07/11/why-are-my-tires-brown/

Interesting that the "brown tire" was the older tire. It all fits together to make sense. I'm not sure this should be acceptable if the three other tires don't show this condition.

 

I would return it for sure.

 

Tires don't really brown by themselves unless its stored near the sun. If you have doubt just ask costco to take it . back. Michelin/BFgoodrich usually has a tendency or weathercrack easier since the durablack compound they use and its a high possibility to brown as well. The browning may be that it was a display tire and they rubbed a lot of petroleum products on it and or it was sitting near the sun. I work for a tire distributor, but tires with an acceptable DOT 17/16 usually doesn't have any concerns but like everyone else they rather have the latest production date then the oldest.