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#4625189 - 01/05/18 04:56 PM Snow Tire Life Span
Finz Offline


Registered: 06/06/13
Posts: 692
Loc: Northern NJ
Iím certain Iíve seen this topic discussed but Iíll be darned if I can find it... I stink at getting the search function to work for me

Anyway... Do snow tires have a life span outside of tread depth?

I canít recall if I bought my snows in 2010 or 2012 and, compared to my all seasons, they seem to be working fine. Plenty of tread left so, based on my driving, can easily get a couple more years out of these Firestone Winterforce on my accord. I be surprised if I do more than 3,500 miles on these tires over any given winter

Just wondering... do they deteriorate or lose their ability to perform based on time?
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#4625202 - 01/05/18 05:09 PM Re: Snow Tire Life Span [Re: Finz]
Bandito440 Offline


Registered: 02/13/12
Posts: 3854
Loc: NEUS
There will be a DOT code on your tires, which includes the year and week of manufacture.
Originally Posted By: Firestone Tire
The DOT tire ID number can be found on at least one sidewall. This identifies the manufacturing location, tire size code, manufacturer's code, and the week and year the tire was manufactured (for example, '0304' means the third week in 2004).

As to the lifespan, Iíd examine them carefully. As long as there isnít cracking of the rubber, Iím generally confident. Michelin recommends inspection every year after five, and replacement at ten years. Iím not sure about Firestone.
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#4625232 - 01/05/18 05:43 PM Re: Snow Tire Life Span [Re: Finz]
Rand Online   content


Registered: 08/20/03
Posts: 12646
Loc: NE,Ohio
For winter tires as long as they arent stored in the sun or a HOT shed/garage

I think you are ok for about 10 years in service or until they harden and lose performance.

its not like the tire is baking in texas or arizona.
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#4625234 - 01/05/18 05:45 PM Re: Snow Tire Life Span [Re: Finz]
slacktide_bitog Online   content


Registered: 03/20/08
Posts: 6169
Loc: USA
Winter tires aren't as good in snow once you get worn down to 5/32. In fact, most winter tires have special wear bars at 5/32 that show you when they're not as good in the snow anymore. Of course, this is in addition to the standard 2/32 wear bars required by law.

It also varies according to the type of winter tire used, how many warm days in the winter, etc. Winter tires wear quickly when it's warm.

Some winter tires have a different compound when you get down to 5/32. Some winter tires have an all-season compound below 5/32, and a standard winter compound above that.

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#4625260 - 01/05/18 06:14 PM Re: Snow Tire Life Span [Re: Finz]
Quattro Pete Offline


Registered: 10/30/02
Posts: 35866
Loc: Great Lakes
At 8 years old, the performance of my current General Altimax Arctic is far from what it was when they were new, despite still having 8/32" tread left. I would say it went downhill after the first 4-5 seasons. My guess is their winter rubber compound has hardened over time and does not offer the same traction as before.
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#4625292 - 01/05/18 06:56 PM Re: Snow Tire Life Span [Re: Finz]
Snagglefoot Offline


Registered: 12/31/17
Posts: 1739
Loc: Alberta
I have a set of Good Year Nordicís that are on their 5th season. No cracks and still a lot of thread. My Cooper Discoveryís on my Suburban are on their last year as snow tires and are going to be left on this summer. New snow tires coming next winter.

SF


Edited by Snagglefoot (01/05/18 06:59 PM)

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#4625312 - 01/05/18 07:15 PM Re: Snow Tire Life Span [Re: Finz]
Finz Offline


Registered: 06/06/13
Posts: 692
Loc: Northern NJ
So, basically, itís all about tread wear. And cracks.

Good to know... thank you
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#4625323 - 01/05/18 07:25 PM Re: Snow Tire Life Span [Re: Finz]
vavavroom Offline


Registered: 10/31/17
Posts: 145
Loc: California
To provide adequate performance, snow tires are made of a softer compound than A/S and summer tires. With any tire older than 5 years I'd make sure they are still soft. All rubber hardens with age, even if properly stored. If in doubt show them to a competent tire tech.

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#4625347 - 01/05/18 07:56 PM Re: Snow Tire Life Span [Re: Finz]
mcwilly Offline


Registered: 07/31/17
Posts: 98
Loc: Canada
I have 7 year old Blizzaks with under 6,000kms on them. They still look and perform like new. Stored indoors when not in use.

Unless I notice any cracks or problems I will use them until the tread wears out. They are said to have 24,000mi lifespans (36,000kms) due to the super soft rubber. But at 1k kms a year they may last the life of the car.

I remember in the early 2000's I drove a 1978 mercury cougar on tires that had sat for over 10 years in a back alley for a whole year before they started going flat. Rubber in and of itself is not biodegradable, the only risk would be from the oils drying out and the tires cracking.
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#4625444 - 01/05/18 09:58 PM Re: Snow Tire Life Span [Re: mcwilly]
KneeGrinder Offline


Registered: 11/28/17
Posts: 221
Loc: North of you Idaho
Originally Posted By: mcwilly
I have 7 year old Blizzaks with under 6,000kms on them. They still look and perform like new. Stored indoors when not in use./
Unless I notice any cracks or problems I will use them until the tread wears out. They are said to have 24,000mi lifespans (36,000kms) due to the super soft rubber. But at 1k kms a year they may last the life of the car.

I remember in the early 2000's I drove a 1978 mercury cougar on tires that had sat for over 10 years in a back alley for a whole year before they started going flat. Rubber in and of itself is not biodegradable, the only risk would be from the oils drying out and the tires cracking.



Blizzaks have a dual compound, the outer top "useful" layer is a silicate impregnated compound that gets softer as the temp gets lower. It is approximately 50% I believe, there should be a wear bar. After that, they are no longer the Blizzak you used to have. 24k would be an extremely long life span, but hopefully you may make that mark. Some people only get 5 to 7k, but they daily drive them.
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#4625455 - 01/05/18 10:19 PM Re: Snow Tire Life Span [Re: KneeGrinder]
UG_Passat Offline


Registered: 05/27/08
Posts: 1970
Loc: NJ
Originally Posted By: KneeGrinder
Originally Posted By: mcwilly
I have 7 year old Blizzaks with under 6,000kms on them. They still look and perform like new. Stored indoors when not in use./
Unless I notice any cracks or problems I will use them until the tread wears out. They are said to have 24,000mi lifespans (36,000kms) due to the super soft rubber. But at 1k kms a year they may last the life of the car.

I remember in the early 2000's I drove a 1978 mercury cougar on tires that had sat for over 10 years in a back alley for a whole year before they started going flat. Rubber in and of itself is not biodegradable, the only risk would be from the oils drying out and the tires cracking.



Blizzaks have a dual compound, the outer top "useful" layer is a silicate impregnated compound that gets softer as the temp gets lower. It is approximately 50% I believe, there should be a wear bar. After that, they are no longer the Blizzak you used to have. 24k would be an extremely long life span, but hopefully you may make that mark. Some people only get 5 to 7k, but they daily drive them.



The WE and DM are dual compound, with the high snow/ice traction multicell-tube compound. Then under that it's just a normal winter high silica compound.

The LM series are just a winter high silica compound.
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#4625482 - 01/05/18 11:12 PM Re: Snow Tire Life Span [Re: Finz]
mcwilly Offline


Registered: 07/31/17
Posts: 98
Loc: Canada
Mine are a bit older, the WS70.

Found this on edmunds.com:

"Carmakers such as Nissan and Mercedes-Benz tell consumers to replace tires six years after their production date, regardless of tread life. Tire manufacturers such as Continental and Michelin say a tire can last up to 10 years, provided you get annual tire inspections after the fifth year.

The Rubber Manufacturers Association says there is no way to put a date on when a tire "expires," because such factors as heat, storage and conditions of use can dramatically reduce the life of a tire."


Keep in mind automakers/tire companies are all in the business of making money.

In my uneducated opinion, I would monitor and run the tires until the tread depth is shot or performance is noticibly down. I would not base anything on a time or date.
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#4625512 - 01/06/18 01:05 AM Re: Snow Tire Life Span [Re: mcwilly]
KneeGrinder Offline


Registered: 11/28/17
Posts: 221
Loc: North of you Idaho
Originally Posted By: mcwilly
Mine are a bit older, the WS70.

Found this on edmunds.com:

"Carmakers such as Nissan and Mercedes-Benz tell consumers to replace tires six years after their production date, regardless of tread life. Tire manufacturers such as Continental and Michelin say a tire can last up to 10 years, provided you get annual tire inspections after the fifth year.

The Rubber Manufacturers Association says there is no way to put a date on when a tire "expires," because such factors as heat, storage and conditions of use can dramatically reduce the life of a tire."


Keep in mind automakers/tire companies are all in the business of making money.

In my uneducated opinion, I would monitor and run the tires until the tread depth is shot or performance is noticibly down. I would not base anything on a time or date.



They still make the WS line its WS80 now, and its a top notch tire.

As far as your uneducated opinion, its the same conclusion I have arrived to myself. I arrived there without any education either. I'm going on 6 years on the set of WS965's on my truck, they look almost new.
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#4625514 - 01/06/18 01:10 AM Re: Snow Tire Life Span [Re: UG_Passat]
KneeGrinder Offline


Registered: 11/28/17
Posts: 221
Loc: North of you Idaho
Originally Posted By: UG_Passat
Originally Posted By: KneeGrinder
Originally Posted By: mcwilly
I have 7 year old Blizzaks with under 6,000kms on them. They still look and perform like new. Stored indoors when not in use./
Unless I notice any cracks or problems I will use them until the tread wears out. They are said to have 24,000mi lifespans (36,000kms) due to the super soft rubber. But at 1k kms a year they may last the life of the car.

I remember in the early 2000's I drove a 1978 mercury cougar on tires that had sat for over 10 years in a back alley for a whole year before they started going flat. Rubber in and of itself is not biodegradable, the only risk would be from the oils drying out and the tires cracking.



Blizzaks have a dual compound, the outer top "useful" layer is a silicate impregnated compound that gets softer as the temp gets lower. It is approximately 50% I believe, there should be a wear bar. After that, they are no longer the Blizzak you used to have. 24k would be an extremely long life span, but hopefully you may make that mark. Some people only get 5 to 7k, but they daily drive them.



The WE and DM are dual compound, with the high snow/ice traction multicell-tube compound. Then under that it's just a normal winter high silica compound.

The LM series are just a winter high silica compound.



I forget more than I remember. lol, there is always something to learn here on BITOG

I never heard of the LM series, I have, WS, and DM V-2's on the Subi
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#4625515 - 01/06/18 01:17 AM Re: Snow Tire Life Span [Re: Finz]
edyvw Offline


Registered: 03/08/12
Posts: 5038
Loc: Colorado Springs
Originally Posted By: Finz
So, basically, itís all about tread wear. And cracks.

Good to know... thank you

Production date! Vendors and tire companies will argue that it is service date. Germany for example requires from vendors to stop selling tires pass 6 months of production date. Then vendors send them mostly outside EU, Russia, Ukraine, Moldova etc. or the U.S. where laws are more laxed.
There is a reason why there is restriction on DOT sale.
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