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GAT

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

Melting Back door tyre

I was wondering what might have happened to this tyre

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.

Click image to enlarge

Click image to enlarge First Edition 90 in Pangea Green. (Gone)
P400 110 in Tasman Blue.

7th Sep 2024 6:56pm

lightning

Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 2566

Wow that's something l've never seen before. How long has the tyre been on the back of the Defender?

7th Sep 2024 8:20pm

GAT

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

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.

7th Sep 2024 8:24pm

WizzardPrang

Member Since: 05 Nov 2020
Location: Hertfordshire
Posts: 141

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

7th Sep 2024 10:05pm

Dinnu

Member Since: 24 Dec 2019
Location: Lija
Posts: 3342

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

8th Sep 2024 3:18am

taffy

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

Its got to be worth speaking to the manufacturer

8th Sep 2024 4:06am

revd

Member Since: 20 Apr 2024
Location: England
Posts: 63

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

Probably never know

Just replace and move on

8th Sep 2024 7:54am

H1Tad

Member Since: 20 Jul 2024
Location: Maine
Posts: 72

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

8th Sep 2024 1:38pm

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