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GAT



Member Since: 20 Apr 2013
Location: Kent
Posts: 96

United Kingdom 
Melting Back door tyre
I was wondering what might have happened to this tyre Shocked
Just removed the wheel cover and found the rear tyre has melted. Anybody else seen such a thing? I can’t see the sun has done this surely. I’m wondering if it’s been wiped over with some chemical substance which has had a dramatic reaction with it?
The bottom of the wheel isn’t as bad as the top.



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 First Edition 90 in Pangea Green. (Gone)
P400 110 in Tasman Blue.
Post #1045120 7th Sep 2024 6:56pm
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lightning



Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 2645

United Kingdom 
Wow that's something l've never seen before. How long has the tyre been on the back of the Defender?
Post #1045130 7th Sep 2024 8:20pm
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GAT



Member Since: 20 Apr 2013
Location: Kent
Posts: 96

United Kingdom 
I only picked the car up on Tuesday so can’t be 100% sure but the previous owner had the wheels refurbished black so I don’t think very long.
The car had previously been damaged so I’m wondering if the body shop had wiped the wheel to remove dust etc with a chemical or something which has reacted like this.
Certainly a strange one. First Edition 90 in Pangea Green. (Gone)
P400 110 in Tasman Blue.
Post #1045132 7th Sep 2024 8:24pm
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WizzardPrang



Member Since: 05 Nov 2020
Location: Hertfordshire
Posts: 145

England 
Maybe overheated in the body shop's paint oven? Current vehicle: 2020 Defender 110S
Gone: Defender 90 HT 200Tdi, Discovery Sport, Freelander 2

Insta: wizzardprang
Post #1045144 7th Sep 2024 10:05pm
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3379

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
Tyres are vulcanized at quite a temperature as part of the manufacturing process, which temperature is much higher than any paint oven would normally reach.

Given that the wear indicators do not show any melting, I do think that this is caused by a chemical process. Rubber is a derivative of oil, and breaks down when in contact with oil. Some oils will break it down faster than others. It could have been something as simple as driving at slow speed over a contaminated surface, like in a workshop.

The first picture shows what seems like water droplets between the thread pattern. Is that water? Or something oozing out of the rubber?
Other pictures show quite some rot as well. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #1045160 8th Sep 2024 3:18am
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taffy



Member Since: 03 Sep 2024
Location: London
Posts: 14

United Kingdom 
Its got to be worth speaking to the manufacturer
Post #1045162 8th Sep 2024 4:06am
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revd



Member Since: 20 Apr 2024
Location: England
Posts: 84

United Kingdom 
Parked overnight in a puddle of oil/atf/brake fluid?

Probably never know

Just replace and move on
Post #1045167 8th Sep 2024 7:54am
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H1Tad



Member Since: 20 Jul 2024
Location: Maine
Posts: 88

United States 
If it was in a paint shop, I'm more than willing to bet that some hamfisted paint prepper was standing on a stool and knocked his can of acetone over which spilled onto the tire. 2022 Defender 110 SE P400 Tasman Blue Expedition and Cold weather package
2003 Hummer H1 P400 Firehouse Red
2008 Toyota FJ Cruiser
Post #1045211 8th Sep 2024 1:38pm
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DFNDER



Member Since: 02 Oct 2023
Location: Perth WA
Posts: 121

Australia 
Yup, that's definitely caused by thinners or acetone. Shame they tried to hide it by just putting the cover back on.
Post #1047148 29th Sep 2024 2:59am
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Grouse



Member Since: 16 Apr 2012
Location: on the hill
Posts: 518

They didn’t remove the tyre when the rim was refurbed and probably sprayed the whole wheel with paint prep degreaser prior to paint
Post #1047151 29th Sep 2024 4:33am
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