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Tire age #5040966
03/12/19 08:05 PM
03/12/19 08:05 PM
Joined: Jun 2018
Posts: 48
TX
rekit Offline OP
rekit  Offline OP

Joined: Jun 2018
Posts: 48
TX
I always thought that to a degree tire degradation was a factor of sunlight exposure, not age. The tires on a classic car stored in the garage tires would age better than a DD. Yes or no?

Re: Tire age [Re: rekit] #5040990
03/12/19 08:21 PM
03/12/19 08:21 PM
Joined: Oct 2017
Posts: 899
Georgia
MParr Offline
MParr  Offline

Joined: Oct 2017
Posts: 899
Georgia
Have you ever had a tire dealer put on tires with a brownish color to them? These are old tires that have been sitting in a warehouse for some time.


2013 KIA Optima EX 2.4L. Now: Unknown &OE filter
2017 Ford Escape SE 2.0T Now: NAPA Synthetic 5W30 & NAPA Gold 1348
Re: Tire age [Re: rekit] #5040997
03/12/19 08:27 PM
03/12/19 08:27 PM
Joined: May 2014
Posts: 1,545
Minnesota
philipp10 Offline
philipp10  Offline

Joined: May 2014
Posts: 1,545
Minnesota
Tire degradation is affected by a whole host of things. I don't know specifics but common sense (that's not too common here sometimes) would tell you that not all environments are the same. Arizona in the sun is surely worse then Montana, stored in a garage. So it's going to be hard to know without some decent engineering studies.

Re: Tire age [Re: rekit] #5041037
03/12/19 09:11 PM
03/12/19 09:11 PM
Joined: Nov 2017
Posts: 507
North of you Idaho
KneeGrinder Online content
KneeGrinder  Online Content

Joined: Nov 2017
Posts: 507
North of you Idaho
Originally Posted by rekit
I always thought that to a degree tire degradation was a factor of sunlight exposure, not age. The tires on a classic car stored in the garage tires would age better than a DD. Yes or no?



Yes, sunlight is a major factor for tires cracking prematurely when mounted and pressurized. Stored in the garage out of daylight is much better, but still the fact that the tire is mounted, has air pressure and has the vehicles weight on them still puts a wear factor on them.

Tires not mounted, stored in the dark, no light at all will last along time, but rubber does change durometer over a long period of time, can't change that.


08 Tribeca 86k PUP 5w30 wix
06 Accord Hybrid 134k PPHM 0w20 wix
02 Chevy k3500 99k Delvac 1 esp 5w40 wix
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Re: Tire age [Re: rekit] #5041223
03/13/19 05:10 AM
03/13/19 05:10 AM
Joined: Apr 2005
Posts: 683
NE Ohio
knerml Offline
knerml  Offline

Joined: Apr 2005
Posts: 683
NE Ohio
Heat, sunlight and air pollution are a big factors during storage.

Tires are actually tested for resistance to heat aging during storage.


2015 Hyundai Elantra Sport 2.0 GDI Mobil 1 5W30 & OEM/Mann W811/80 Filter
2018 Hyundai Santa Fe Sport AWD 2.0T Castrol Edge 5W40 & OEM/Mann W811/80 Filter
Re: Tire age [Re: rekit] #5041226
03/13/19 05:23 AM
03/13/19 05:23 AM
Joined: Mar 2008
Posts: 638
A Warm place to live in
berniedd Offline
berniedd  Offline

Joined: Mar 2008
Posts: 638
A Warm place to live in
Ozone and heat age tires the most.

Re: Tire age [Re: rekit] #5041266
03/13/19 06:45 AM
03/13/19 06:45 AM
Joined: Feb 2009
Posts: 17,428
Michigan
daves87rs Offline
daves87rs  Offline

Joined: Feb 2009
Posts: 17,428
Michigan
My General RTs (pre43) just turned 6 years old, and are doing quite well.

Car is garage parked most of the time, so I am sure it helps.....


2019 Chevrolet Equinox LS
2006 Chevrolet Cobalt LS
Re: Tire age [Re: rekit] #5041286
03/13/19 07:06 AM
03/13/19 07:06 AM
Joined: Apr 2010
Posts: 2,886
Atlanta,GA
BMWTurboDzl Offline
BMWTurboDzl  Offline

Joined: Apr 2010
Posts: 2,886
Atlanta,GA
Originally Posted by rekit
I always thought that to a degree tire degradation was a factor of sunlight exposure, not age. The tires on a classic car stored in the garage tires would age better than a DD. Yes or no?



Heat, humidity, UV exposure, and chemicals can accelerate the aging process.


“It took untold generations to get you where you are. A little gratitude might be in order. If you’re going to insist on bending the world to your way, you better have your reasons.”

435i
Re: Tire age [Re: MParr] #5041304
03/13/19 07:41 AM
03/13/19 07:41 AM
Joined: Feb 2003
Posts: 3,542
Somewhere in the US
CapriRacer Offline
CapriRacer  Offline

Joined: Feb 2003
Posts: 3,542
Somewhere in the US
Originally Posted by MParr
Have you ever had a tire dealer put on tires with a brownish color to them? These are old tires that have been sitting in a warehouse for some time.


Ah ….. Mmm ……. Not exactly. and it depends on what you mean by old.

That brownish color is actually antioxidants (AO's) that have done their job. When the tire is put into surface, they migrate to the surface and create this crust. The crust is a combination of the waxes and the AO's. It flakes off as the tires is used.

Some tire manufacturers use a lot of AO's, so it doesn't take very long for that crust to show up. I've seen tires as new as a year with that crust.

Originally Posted by BMWTurboDzl
Originally Posted by rekit
I always thought that to a degree tire degradation was a factor of sunlight exposure, not age. The tires on a classic car stored in the garage tires would age better than a DD. Yes or no?



Heat, humidity, UV exposure, and chemicals can accelerate the aging process.


Heat is the big ticket item. Tires in Phoenix age a lot faster than tires in Minneapolis.

And to expand on this a little bit:

Tire aging is quite complex, so it is difficult to be precise as to how long it takes before the rubber has deteriorated to the point where it is unsafe to operate. When you hear someone say the limit is 6 years and another one says 10 years, it's because they are looking at different parts of the beast.


CapriRacer

Visit my web site: www.BarrysTireTech.com
Re: Tire age [Re: rekit] #5041334
03/13/19 08:25 AM
03/13/19 08:25 AM
Joined: Mar 2015
Posts: 5,817
Glendale, Arizona
billt460 Offline
billt460  Offline

Joined: Mar 2015
Posts: 5,817
Glendale, Arizona
UV exposure is horrible on rubber and plastic. It's why you always see motor homes and RV's parked with those sun guards covering the tires. Leave a piece of Schedule 40 PVC pipe exposed to Arizona sunlight for a Summer. It will turn a dark purple / black on the side that faces the Sun. The other side will remain normal. It's why most all exposed PVC on swimming pools out here has to be painted, or it will deteriorate in no time.

Re: Tire age [Re: rekit] #5044443
03/15/19 08:57 PM
03/15/19 08:57 PM
Joined: Sep 2009
Posts: 192
Rapid City, South Dakota
littlehulkster Offline
littlehulkster  Offline

Joined: Sep 2009
Posts: 192
Rapid City, South Dakota
I've wondered for a while if it wouldn't be a good idea to wipe the tires down with some 303 Aerospace protectant prior to storing them away. It's not expensive, and the stuff apparently does work quite well on rubber. I'd be worried about any oils potentially degrading the traction, though.


2015 Mazda3 I 2.0
Re: Tire age [Re: littlehulkster] #5044461
03/15/19 09:23 PM
03/15/19 09:23 PM
Joined: Apr 2012
Posts: 2,783
West Michigan
buck91 Offline
buck91  Offline

Joined: Apr 2012
Posts: 2,783
West Michigan
Originally Posted by littlehulkster
I've wondered for a while if it wouldn't be a good idea to wipe the tires down with some 303 Aerospace protectant prior to storing them away. It's not expensive, and the stuff apparently does work quite well on rubber. I'd be worried about any oils potentially degrading the traction, though.


I used to use 303 a lot as a tire "shine" and liked the natural look it imparted. I would NOT use it on anything tread related, though!


2011 F150 4x4 5.0L
1996 Mustang GT 5spd/ragtop
Re: Tire age [Re: buck91] #5044485
03/15/19 09:50 PM
03/15/19 09:50 PM
Joined: Sep 2009
Posts: 192
Rapid City, South Dakota
littlehulkster Offline
littlehulkster  Offline

Joined: Sep 2009
Posts: 192
Rapid City, South Dakota
Originally Posted by buck91
Originally Posted by littlehulkster
I've wondered for a while if it wouldn't be a good idea to wipe the tires down with some 303 Aerospace protectant prior to storing them away. It's not expensive, and the stuff apparently does work quite well on rubber. I'd be worried about any oils potentially degrading the traction, though.


I used to use 303 a lot as a tire "shine" and liked the natural look it imparted. I would NOT use it on anything tread related, though!


Yeah, I think avoiding the tread would be wise, but I wonder if a good wipedown of the rest of the tire before you stow them away would help prevent dry rot and cracking.


2015 Mazda3 I 2.0
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