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I thought I'd check my tires on my 2016 C7 Z51 coupe, which was built on September 12, 2015, delivered to the NCM on September 16, 2015, and I picked up at the NCM on October 5, 2015. It still has the original tires - the fronts have 3415 (August 17-23, 2015) on them and the rears have 3215 (August 3-9, 2015). So, at least in my case, it seems the factory gets freshly made tires.
 

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Ordered and received my "new" tires from Discount tires. Michelin AS4 in oem z51 sizes . To my disappointment they are almost 2 years old by mfg date . Anyone else notice this and seems like a lot of time taken off the clock if you believe in the tires get old and must be replaced after 5 or 6 years.
Now i don't rush right out after 5 or 6 years myself but was hoping for a bit closer mfg date . Dealer said they get what they get and nothing they can do about it. For my use not likely i will wear them out before they are swapped out due to time as my Corvette is not my daily driver but wondering if anyone else sees this as an issue.
Also surprised to hear the dealer tell me that they don't work on tires over about 6 years old which means I'm giving up 20% of the tire life on purchase. Seemed odd to me.
Ordered and received my "new" tires from Discount tires. Michelin AS4 in oem z51 sizes . To my disappointment they are almost 2 years old by mfg date . Anyone else notice this and seems like a lot of time taken off the clock if you believe in the tires get old and must be replaced after 5 or 6 years.
Now i don't rush right out after 5 or 6 years myself but was hoping for a bit closer mfg date . Dealer said they get what they get and nothing they can do about it. For my use not likely i will wear them out before they are swapped out due to time as my Corvette is not my daily driver but wondering if anyone else sees this as an issue.
Also surprised to hear the dealer tell me that they don't work on tires over about 6 years old which means I'm giving up 20% of the tire life on purchase. Seemed odd to me.

This tire has never been easily acquired due to low demand, and therefore, rarely manufactured. Just the fact that a two year old pair was not sold at all until now reveals the issue. When I got mine years ago, even then they had to scrounge around to find a full set for my Z51. Call it 'low supply and low demand'. Lol.
 

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Discussion Starter · #23 ·
I’ve been dealing with Discount Tires for over 20 years and have bought numerous tires for all the Corvettes I’ve owned and, my family as well.
I also tell them I don’t want any tires with a date code over a year. I get pushback from them saying they can’t guarantee what date code they’ll get. I tell them to go ahead and order the tires and if they come in with a date code well over a year to send them back and I’ll go elsewhere. Like I said in the beginning, I’ve been dealing with Discount Tires for over 20 years and they never had to send any back. I’m sure the manager can tell the warehouse not sent anything over a year.
chris
Appreciate your experience and I as well have been using Discount/Americas Tire for decades. And I have never been provided a tire at 22 months from date of mfg. While I am not convinced for my use it matters safety wise I do have a problem with any company selling me a "new" tire that is 22 months old while telling me it has a "expiration" date either from the mfg or the installer. Matter of principal I guess.

And also agree you used to be able to expect the seller to reach out to the supplier and say send something within 6 or 8 months however that was the good old days. Today they insist they can't expect to speak with anyone . Companies are working through the computer with minimal staffing . In this case the manager is ordering a second set of tires from another State in hopes they will be newer . But with no guarantees as they could be older. In many cases there are no tires to be had for whatever reason. We are navigating new and very different times today and it appears it is getting worse by the week..
 

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Ordered and received my "new" tires from Discount tires. Michelin AS4 in oem z51 sizes . To my disappointment they are almost 2 years old by mfg date . Anyone else notice this and seems like a lot of time taken off the clock if you believe in the tires get old and must be replaced after 5 or 6 years.
Now i don't rush right out after 5 or 6 years myself but was hoping for a bit closer mfg date . Dealer said they get what they get and nothing they can do about it. For my use not likely i will wear them out before they are swapped out due to time as my Corvette is not my daily driver but wondering if anyone else sees this as an issue.
Also surprised to hear the dealer tell me that they don't work on tires over about 6 years old which means I'm giving up 20% of the tire life on purchase. Seemed odd to me.
You should have ordered from Tire Rack
 

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Discussion Starter · #25 ·
So to wrap this up the 2nd set of front A/S 4Pilot Sport Michelin tires for the front of my Z51 came in. These two came from a different supplier in Texas. First set came from Colorado with a mfg date 22 months ago. The second set have a mfg date 3 weeks later also in 2020.
So if I want those specific tires those are my choices . As another post mentioned the manager at Discount Tires believes there has not been a lot of them sold so they are older than most tires.
I will have them installed next week.. Oh and no further discount available according to the manager. The cost for the 4 tires including "life of tire" maintenance came out to $1415.00
Still believe for Michelin to put a 6 year date on life of the tire and then sit on a shelf for almost 2 years is an issue for the end user.
Thanks to all that shared their expertise and or opinions..
 

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You should have ordered from Tire Rack
I have a 2015 Z-51. I went to Costco in May to order new Michelin AS4 tires. At that time they said they didn't have them. The tech called his distributor and was told around July. I called Michelin and was told that they were going to start production of the rear tires in late June, should be available in late July. I checked Tire Rack and Discount tires, they had the front tires (like you new/old tires) but didn't have the rears. So it looks like demanding fresh front tire should be made when ordering.
As a side story. about 10 years ago I dropped off my diesel pusher for new tires, they had plenty of tread but 8 years old, When I went to pick up my coach, i checked the DOT date, and they were 2 years old. I told the tire dealer I wouldn't accept that, get me tires that are 6 months old or newer or put my old ones back on and i would shop somewhere else. Next day i got a call that my coach was ready with fresh 2 month old tires.
 

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Just have a base Corvette ( 18" Front & 19" Rear) I see no need for Michelin Run Flats as the are way over priced. If I have a tire problem I call AAA. Don't track the Corvette put a set of Kumho Esta PA51 on it with 2 year road hazard included for a grand total of $796.21 Mounted, Balanced, Nitrogen out the door. The handle an ride very nice.
 

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Discussion Starter · #28 ·
I have a 2015 Z-51. I went to Costco in May to order new Michelin AS4 tires. At that time they said they didn't have them. The tech called his distributor and was told around July. I called Michelin and was told that they were going to start production of the rear tires in late June, should be available in late July. I checked Tire Rack and Discount tires, they had the front tires (like you new/old tires) but didn't have the rears. So it looks like demanding fresh front tire should be made when ordering.
As a side story. about 10 years ago I dropped off my diesel pusher for new tires, they had plenty of tread but 8 years old, When I went to pick up my coach, i checked the DOT date, and they were 2 years old. I told the tire dealer I wouldn't accept that, get me tires that are 6 months old or newer or put my old ones back on and i would shop somewhere else. Next day i got a call that my coach was ready with fresh 2 month old tires.
As a side note regarding Costco I did inquire there but the Costco near me is less than year old and they do not have the updated tire changing machine needed to handle the larger tires from our Corvettes. It has been on order for over a year and they believe it is off the coast somewhere sitting in a container ship...
 

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Yikes, Paul, that really looks bad. I think I better take a close look at my AS/3+ZPs I got them in April of 2020 but I have not driven very much on them, maybe 2,000 miles at most. Just walking around the car I haven't noticed anything obvious but I will check more closely now. Any idea what caused the splits? --Bob
The Mgr at Discount Tire said it can happen on older (low profile) tires if you hit a pot hole. He called them "compression splits".
On my trip to Norm's place two weeks ago, I didn't hit any pot holes but did hit some bridge seams which almost loosened some teeth fillings. 😩
 
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I'm going to need new tires next spring. I'll prep my local Discount Tire Manager to be on the look out for "New" tires for me. I'm not accepting old new tires unless they want to knock off $100 bucks a tire. If they have old stock, they need to run a sale and discount the old ones to get them cleared out. That's what most companies do with old inventory.
 
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Just have a base Corvette ( 18" Front & 19" Rear) I see no need for Michelin Run Flats as the are way over priced. If I have a tire problem I call AAA. Don't track the Corvette put a set of Kumho Esta PA51 on it with 2 year road hazard included for a grand total of $796.21 Mounted, Balanced, Nitrogen out the door. The handle an ride very nice.
Until you get a flat in the rain in the dark... then you need them. The point is it's "insurance" against these events. Unless of course you never drive in the dark or in the rain or more than 5mi from home... then by all means.
 

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Until you get a flat in the rain in the dark... then you need them. The point is it's "insurance" against these events. Unless of course you never drive in the dark or in the rain or more than 5mi from home... then by all means.
That is why I have AAA to cover these unexpected thinks. Come to think of it have not had a flat tire in probably 10 years. Got a nail in the sidewall of brand-new Michelin Run flats on our 2003 C5 Corvette. Could not be repaired! Not good as no shops I know of in our area of Florida will do SIDEWALL REPAIRS.
 

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One final observation regarding run flats vs. non. I have an extra set of wheels and tires which I ran while waiting for the new ones to arrive. The tires are Continental Extreme all season non run flats. I could not feel any difference between the Michelin run flats and the Continentals. For peace of mind, I'll stick with the Michelins.
 
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Just purchased a full set of Continental Extreme Contact Sport, 19'' & 20'' at Discount Tire. All four were made on 13th week of 2021. These replaced the Michelin run flats that came on my 2015. Finall got a chance to do a mini road trip Sunday to test them out. Much quieter, much smoother ride. Doesn't feel like I'm driving on 4 flat tires. I'll never go back to run flats.
 

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Just purchased a full set of Continental Extreme Contact Sport, 19'' & 20'' at Discount Tire. All four were made on 13th week of 2021. These replaced the Michelin run flats that came on my 2015. Finall got a chance to do a mini road trip Sunday to test them out. Much quieter, much smoother ride. Doesn't feel like I'm driving on 4 flat tires. I'll never go back to run flats.
I'm sure your Continentals are an improvement over your 6 year old OEM tires. However, those Michelins were summer only tires, which were noisy and had a harsh ride; characteristics which only got worse with age. The new Michelin All Season tires are a huge improvement over OEM.

My comparison was based on driving on both sets of tires (within an hour) on the same roads.
 

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I'm sure your Continentals are an improvement over your 6 year old OEM tires. However, those Michelins were summer only tires, which were noisy and had a harsh ride; characteristics which only got worse with age. The new Michelin All Season tires are a huge improvement over OEM.

My comparison was based on driving on both sets of tires (within an hour) on the same roads.
I agree with Paul. Replacing my shot OEM Pilot Sports at 20k miles with Michelin A/S3+ZPs offered a big improvement in ride quality and noise, and even reduced the
Ackerman effect somewhat.--Bob.
 

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I'm sure your Continentals are an improvement over your 6 year old OEM tires. However, those Michelins were summer only tires, which were noisy and had a harsh ride; characteristics which only got worse with age. The new Michelin All Season tires are a huge improvement over OEM.

My comparison was based on driving on both sets of tires (within an hour) on the same roads.
We pretty much drove the same roads I have been driving for past year yesterday. I can actually remember how the tires and ride were on old tires and these Continentals are tons better in my opinion. As far as summer tires, I live outside Dallas, it's always summer temps here. LOL. I looked at the Michelin's but decided to try something different after reading all the 5 star reviews and they corrected all the problems I had before that you mentioned so I'm happy with my purchase. Glad your happy with your Michelin's. (y)
 

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Like we always say on SRF: "To each their own." 🤗
 

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I thought I'd check my tires on my 2016 C7 Z51 coupe, which was built on September 12, 2015, delivered to the NCM on September 16, 2015, and I picked up at the NCM on October 5, 2015. It still has the original tires - the fronts have 3415 (August 17-23, 2015) on them and the rears have 3215 (August 3-9, 2015). So, at least in my case, it seems the factory gets freshly made tires.
In early August a local tire shop ordered and installed a couple of P245/40R18 Michelin Pilot Sport AS 4 for the front of my 2015 Stingray for $203/each. I just checked and they were manufactured in March and April 2021.
 

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Replacing my shot OEM Pilot Sports at 20k miles with Michelin A/S3+ZPs offered a big improvement in ride quality and noise...
Agreed. Did the same on my GS this Summer (at 12k) and noticed the same benefits. BTW, bought and installed at my local Discount Tire.
The fronts were mfg. in Feb. of 2021, the rears in Apr. 2021.
 
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