Cooper Dicoverer ST on Series II Td5 Discovery

Submitted: Wednesday, Feb 19, 2003 at 12:57
ThreadID: 3442 Views:2122 Replies:6 FollowUps:6
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I'd appreciate any input.
I'm just about to replace my tyres on my Td5 Disco. I do an average amount of driving off the black stuff and am planning a trip to Cape York in Jun/Jul 03.

I have just read the Australian 4wd monthly article on AT tyres and have decided that the cooper ST is for me.

My first question is......Is this tyre a wise choice?

My second is I'm currently running 235/70/16, my plan is to increase the size to 255/70/16. Does anyone out there know if the increase will be OK with out a slight lift?
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Reply By: Jono - Wednesday, Feb 19, 2003 at 14:22

Wednesday, Feb 19, 2003 at 14:22
dolfn,
May i ask if you considered the Mickey Thomsom's AT's in the 4WD Monthly comparo?

I'm finding it hard to go past them, as the off road stats are great and the on road rating was better than the Coopers. I cant recall 100%, but i think the Mickey Thomsons were cheaper too.

jono.
AnswerID: 13482

Follow Up By: Dolfn - Wednesday, Feb 19, 2003 at 15:27

Wednesday, Feb 19, 2003 at 15:27
Dont think I could get that one in the correct size

do you know if the 255/70/16 will be ok on the disco?
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FollowupID: 7901

Reply By: Mark - Wednesday, Feb 19, 2003 at 20:36

Wednesday, Feb 19, 2003 at 20:36
Dolfn,

Fitted a set of ST's to my Disco 1 just before Xmas. I kept with the standard size 235/70 R16 as I had a new spare at this size. The Coopers seem to be a lower profile than my previous well worn michelins, I know this because I was concerned about the new tyres raising the vehicle as my carport clearance is around 2cm, well I was surprised and its actually dropped so the 255/70 should be ok. I have only covered 3000km and happy with the performance so far, a slight increase in road noise but hardly noticable in a TDI. These tyres seem to kick up less stones than the Michelins, but they do tend to trap small stones in the wider grooves between treads so you end up digging a few stones out after gravel roads.
Did a lot of research before buying and recieved mostly positive feedback. Don't think you will be disapointed.

Cheers
AnswerID: 13525

Follow Up By: Dolfn - Thursday, Feb 20, 2003 at 07:58

Thursday, Feb 20, 2003 at 07:58
Thanks for that most helpful
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FollowupID: 7930

Reply By: Slunnie - Wednesday, Feb 19, 2003 at 21:53

Wednesday, Feb 19, 2003 at 21:53
Dolfin,

The 255/70-16 is a 30" tyre, and so 1" over standard - It is also the ES standard width, and you won't have any troubles with rubs. Check out this excellent web page for tyres that fit the Disco2.
http://www.disco2.com/howto/offroader/tyresizes.phtml
With regards to the tyre selection, I would advise you not to use the Cooper ST on the Disco, and to go for some other type of tyre like the BFG AT.

The Cooper ST is a brilliant tyre on the road, and it is great for light off road work, its even good for the heavy stuff, but when wheels start to spin they also start ripping lugs out of the ST's very very quickly. Now where this relates to the Disco is in the way that the ETC works. The ETC requires wheelspin before braking that wheel to send power to the other wheels, and as long as that wheel is spinning, the lugs are going to get torn out. I currently have 255/85-16 Cooper ST's on my D2, and they are being changed under warranty to the Cooper STT's this weekend due to broken lugs. It seems the problem lies with the rubber compound and the sip design of the side lugs, and although no press releases have been made, Cooper is releasing a revised version of the ST and STT shortly.

Regards
Slunnie

PS. If you are interested in a Disco 2 specific forum, please come along to: http://groups.yahoo.com/group/AussieDiscoveryII
AnswerID: 13533

Follow Up By: Dolfn - Thursday, Feb 20, 2003 at 07:59

Thursday, Feb 20, 2003 at 07:59
Thanks very much. Not buying for about 3 months so maybe the improved ST might be out.
The web site is very helpful.
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FollowupID: 7931

Reply By: nugget - Wednesday, Feb 19, 2003 at 23:14

Wednesday, Feb 19, 2003 at 23:14
I have a mate who recently fitted 245/75/16 BFG AT, hasn't had any clearance problems despite standard suspension. Overall diameter is about 30.5". He also had a centre diff lock actuator fitted by ARB (around $800 I think) Because he was sick of being pulled out by Range Rovers. Has made a considerable improvement to his off road ability.
AnswerID: 13547

Follow Up By: Dolfn - Thursday, Feb 20, 2003 at 08:01

Thursday, Feb 20, 2003 at 08:01
Thanks you have all been more than helpful.
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FollowupID: 7932

Reply By: BoneMan - Thursday, Feb 20, 2003 at 15:23

Thursday, Feb 20, 2003 at 15:23
Does anyone know wheather this document

http://www.disco2.com/howto/offroader/tyresizes.phtml

also applies to the new Disco 2003 model
AnswerID: 13581

Follow Up By: Slunnie - Thursday, Feb 20, 2003 at 20:27

Thursday, Feb 20, 2003 at 20:27
Yep, the suspension, guards and axles have not been altered AFAIK in that respect. It was a facelift rather than a new version.
Slunnie
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FollowupID: 7996

Follow Up By: Slunnie - Thursday, Feb 20, 2003 at 20:27

Thursday, Feb 20, 2003 at 20:27
Yep, the suspension, guards and axles have not been altered AFAIK in that respect. It was a facelift rather than a new version.
Slunnie
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FollowupID: 7997

Reply By: jason - Thursday, Feb 20, 2003 at 23:43

Thursday, Feb 20, 2003 at 23:43
i don't know what state you are in but in qld you are able to go 25mm bigger in diameter.any larger than this and your vehicle will be illegal.your tyre store will be able to tell you if the tyres you choose are suitable.have you considered bridgestone 693 AT.excellent on and off road and cheaper than coopers and bfg's and performe just as well
AnswerID: 13618

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