When Aged Tires Fail - DPChallenge Forums

Canon EF 100mm f/2.8 USM Macro

10/02/2008 02:18:03 PM · #26

I decided to check with one of our emergency organisation here in the UK. The RAC and the AA have been around along time and are considered reliable in any information they supply. In fact, both offer an inspection service to prospective buyers of cars.

The only info I could find referred to tyres on vehicles:

'Sheila Ranger, deputy director for the RAC Foundation, said: "Modern tyres are very robust and failure-resistant, but older tyres that have been stored incorrectly or simply not used for many years can become unfit for purpose through the passage of time alone."'

Hence, a car that has been parked up or stored with wheels still on, can suffer degredation. There is not mention of Jeb's 'NOS' tyres.

Note: Of course, any tyre can fail at anytime due to manufacturing error or carelessness on the part of the driver. A common fact is people bumping up kerbs and causing damage to the sidewalls. This damage is usually invisible to the eye but destroys the integrity of the stucture.

Message edited by author 2008-10-02 14:20:30.

Spork99

OM System OM-1

10/02/2008 02:21:06 PM · #27

Originally posted by Art Roflmao:

Originally posted by Spazmo99:
I hate retreads, I think they should be illegal. There's nothiong like driving near a truck when one of those decides to come apart at 70mph.

Yeah, but come on - there are so few thrills left in life. :)

True, but pooping my pants when an 80lb slab of rubber gets chucked into my windshield on the freeway isn't a good kind of thrill.

Art Roflmao

Canon EOS-6D Mark II

Canon EF 24-105mm f/4.0L IS

10/02/2008 02:22:47 PM · #28

Originally posted by Spazmo99:

True, but pooping my pants when an 80lb slab of rubber gets chucked into my windshield on the freeway isn't a good kind of thrill.

Speaking of Slippy.... :P

Strikeslip

Canon EOS-5D

Canon EF 100-400mm f/4.5-5.6L IS

10/02/2008 02:39:25 PM · #29

i get no respect
:-P

10/02/2008 02:54:14 PM · #30

Originally posted by SteveJ:

Hence, a car that has been parked up or stored with wheels still on, can suffer degredation. There is not mention of Jeb's 'NOS' tyres.

This is how things get misconstrued.....I stated in reference to Spazmo's comment about putting NOS tires on:

Generally, that is NOT done......anything rubber, neoprene, and other degradable parts like cork and that kind of thing is discarded......NOS hydraulic parts that have rubber seals are taken apart & refurbished with all new seals.

Belts and hoses are generally thrown out or used solely as a template in the case of a real rare component/part.

ETA: An issue in the collector car industry is the old tires that are upon some original, unrestored cars. Most collectors will have another set of wheels if they need to run on the road and will swap them out for the originals for a show. It's also quite common to put a car with old or original tires up on jackstands or blocks so as to prevent the tires from flat spotting from sitting.

Message edited by author 2008-10-02 15:00:41.

Canon EF 100mm f/2.8 USM Macro

10/02/2008 02:58:01 PM · #31

Originally posted by SteveJ:

A common fact is people bumping up kerbs and causing damage to the sidewalls. This damage is usually invisible to the eye but destroys the integrity of the stucture.

Actually, both curb damage and the results of serious underinflation are both readily visible to anyone familiar with inspecting tires, and easily discernible from the more unusual tread/ply separation bulges and lumps.

geoffb

10/02/2008 03:13:33 PM · #32

Thank you, Jeb, for sticking to your principles. This fear-mongering over a virtual non-issue is a waste of time.

For everyone on the other side of the coin, I strongly suggest you read The Culture of Fear.

Spork99

OM System OM-1

10/02/2008 03:34:27 PM · #33

You expected today to be different because......????

Originally posted by Strikeslip:

i get no respect
:-P

10/02/2008 03:38:43 PM · #34

Originally posted by NikonJeb:

Originally posted by SteveJ:
Hence, a car that has been parked up or stored with wheels still on, can suffer degredation. There is not mention of Jeb's 'NOS' tyres.

This is how things get misconstrued.....I stated in reference to Spazmo's comment about putting NOS tires on:

Generally, that is NOT done......anything rubber, neoprene, and other degradable parts like cork and that kind of thing is discarded......NOS hydraulic parts that have rubber seals are taken apart & refurbished with all new seals.

Belts and hoses are generally thrown out or used solely as a template in the case of a real rare component/part.

ETA: An issue in the collector car industry is the old tires that are upon some original, unrestored cars. Most collectors will have another set of wheels if they need to run on the road and will swap them out for the originals for a show. It's also quite common to put a car with old or original tires up on jackstands or blocks so as to prevent the tires from flat spotting from sitting.

I think you have misread this Jeb. I was referring to the text supplied by the RAC. I was not implying that your NOS parts were included in this, nor that your original answer was incorrect. Merely that storage of a vehicle without taking the necessary precautions can lead to multiple failures of, and especially, rubber items. Perishing of rubber on tyres is very common in a wrongly stored car.

10/02/2008 03:42:28 PM · #35

Originally posted by NikonJeb:

I have to take you to task on this statement tho:) Curb damage is not always readily visible, just one bump up a kerb at low speed can cause damage to the structure of the tyre. It is possible for the radial cords to be weakened or broken without there being visible damage. It is a culmative process where repeated curbing can lead to visible deformities of the wall or tread pattern. Hope that clarifies my rather broad earlier post:)

Message edited by author 2008-10-02 15:43:10.

10/02/2008 04:47:45 PM · #36

Originally posted by SteveJ:

A common fact is people bumping up kerbs and causing damage to the sidewalls. This damage is usually invisible to the eye but destroys the integrity of the stucture.

Originally posted by NikonJeb:

Originally posted by SteveJ:

If you nail a curb hard enough to break cords or damage the casing, it WILL leave a visible mark.

Tires are not that fragile.

10/02/2008 04:49:09 PM · #37

Originally posted by NikonJeb:

Originally posted by SteveJ:
A common fact is people bumping up kerbs and causing damage to the sidewalls. This damage is usually invisible to the eye but destroys the integrity of the stucture.

Originally posted by NikonJeb:
Actually, both curb damage and the results of serious underinflation are both readily visible to anyone familiar with inspecting tires, and easily discernible from the more unusual tread/ply separation bulges and lumps.

Originally posted by SteveJ:
I have to take you to task on this statement tho:) Curb damage is not always readily visible, just one bump up a kerb at low speed can cause damage to the structure of the tyre. It is possible for the radial cords to be weakened or broken without there being visible damage. It is a culmative process where repeated curbing can lead to visible deformities of the wall or tread pattern. Hope that clarifies my rather broad earlier post:)

If you nail a curb hard enough to break cords or damage the casing, it WILL leave a visible mark.

Tires are not that fragile.

Okay:)

10/02/2008 04:54:40 PM · #38

Originally posted by NikonJeb:

If you nail a curb hard enough to break cords or damage the casing, it WILL leave a visible mark.

Tires are not that fragile.

Originally posted by SteveJ:

Okay:)

I'm not trying to give you a hard time......one of the things I had to do was to determine tire failure issues in the shop that I had, I sold a lot of tires, and I had to learn in order to apply for warranty consideration.

There are a lot of issuees that go into tire failure and fortunately in this day and age, it's rarely manufacturing issues.

Unfortunately, most vehicle owners do NOT want to hear that THEY trashed the tire(s).