Discovery 3 Cooper AT3 265/60/18

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Originally Posted by Doug145

Hi folks,
Just wondering about the tyre requirements for my D3. My understanding is that if I fit road tyres I need a speed rating of H or better. However, if I fit M+S tyres I can have a lesser speed rating so long as I drive at a speed less than the rating of the M+S tyre. Can you tell me where AT tyres fit into this as I can't find any rated as H for speed? Are they stamped with M+S?
Thanks.
Doug

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Hello
Mine have M+S on them as shown in the picture.
Berwick Tyrepower were very careful to make sure these tyres were Ok for my D3 because these tyres are 10mm wider than standard.

Regards Michael

I just came from my local cooper dealer and said he could not fit the 265/60r18 AT3's because of the 110 load rating as my tyre placard states a load rating of 112.

so i'm going to put some 255/60R18 112 Grabber At's on her instead and at $275 a corner not a bad price.

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Originally Posted by brad72

I just came from my local cooper dealer and said he could not fit the 265/60r18 AT3's because of the 110 load rating as my tyre placard states a load rating of 112.

so i'm going to put some 255/60R18 112 Grabber At's on her instead and at $275 a corner not a bad price.

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Your tyre dealer is wrong. You can fit down to 109 (the minimum rating). Note that there is no 265/60R18 on the placard.

See post 5, this thread:

http://www.aulro.com/afvb/d3-d4-rrs/...e-explain.html

Cheers,

Gordon

I put 265/60/R18 AT3s on 4 months ago and have written off 3 of them in the past 3 months. All doing off-road, but nothing too extreme.

When we put them on, the tyre dealer noted the LR requirement for 112 rated tyres, and the AT3s are 110.

After the 3rd failure in 2 months I approached the Coopers rep and he's basically said that the radial construction 110s simply aren;t strong enough. Apparently they have some LT construction (120 rated) tyres coming out in 3-12 months.

Really interesting that you bring this up. I picked up my car last week from the garage and the mechanic there warned me about my AT3's, saying they had developed little cracks in the grooves.

Now I don't truly know how old, or how many kilometres these have done as they were on the vehicle when I bought it earlier this year (for what it's worth I reckon they were pretty much new). I have done 15k and I rotated them only 5k ago. I have done next to no off roading - due to the ongoing saga I have had with differentials (don't get me started...) and it has only driven on a few dirt roads. So this has come about from highway driving...

The mechanic reckons that AT3's are no good and he said that he has seen this before on D3s. He recommended MTs and BFGs, but I guess opinions on tyres are like bums - everyone's got one.

Forgot to put up this. It isn't the best quality...

Hello

I have a quick question, a bit off topic but on the right path, does anyone know if the 18" D3 wheels fit D4? In particular 2012 HSE D4.

Im pretty sure they dont but I have to ask.

Thanks

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Originally Posted by DiegotheCat

Hello



I have a quick question, a bit off topic but on the right path, does anyone know if the 18" D3 wheels fit D4? In particular 2012 HSE D4.



Im pretty sure they dont but I have to ask.



Thanks

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They won't fit over the brakes.

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Originally Posted by garethbrown2670@gmail.com

I put 265/60/R18 AT3s on 4 months ago and have written off 3 of them in the past 3 months. All doing off-road, but nothing too extreme.

When we put them on, the tyre dealer noted the LR requirement for 112 rated tyres, and the AT3s are 110.

After the 3rd failure in 2 months I approached the Coopers rep and he's basically said that the radial construction 110s simply aren;t strong enough. Apparently they have some LT construction (120 rated) tyres coming out in 3-12 months.

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So from what you are saying in the quote above, a Cooper authorised representative is telling you that the AT3 in 110s is not able to be used in an aired down situation in areas where sidewall strength is required.

Therefore the tyre is being sold inappropriately, as there is no disclaimer stating that that model cannot be aired down and used for the purpose a reasonable person would expect.

I'd very actively seek reimbursement for the cost of the 3 tyres that have failed due to inappropriate supply for your purpose. If you get a chance to call Exclusive Tyres who are the Australian Distributor of Cooper, and speak to John Pfeffer, tell him Will Church sends his regards. You'll probably hear the shudder down the phone line lol. For context Cooper ST delamination.

Bloody hell, Will! I just read your account on the delamination... Glad to hear that no one got hurt.