Cooper STT's update

Submitted: Thursday, May 25, 2006 at 10:14
ThreadID: 34243 Views:2615 Replies:6 FollowUps:4
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Just had another set 6 of Cooper STT's fitted. This time I went for the 265x75x16.

April last year I was given a set of 6 Cooper STT's to try out. A new compound and some other changes had been made to the tyres and Coopers want the tyre tested and reports sent back. The reports that I sent Coopers were the same that I had put on here.

My main concern was the high rate of tread wear at first, but this had slowed down the more the tyres were used.

A few facts from the old tyres.

285x75x16 STT's
Fitted 1st April 2005
Speedo reading 172777klm
Tread depth 15mm

Tyres removed
25th May 2006
Speedo reading 232600lkm
Tread depth 6mm

That works out to be
60 weeks
60,000klm
average 1000lkm per week over 13 months.
6600klm per 1mm of ware.average

The tread blocks had some cuts and abrasion but there was no chipping like I have seen on other tyres.

The side wall were like new with no visible cuts at all.

No punctures at all.

The tyre have been all over Australia on all types of roads and conditions.

This next set I will be doing the same. Keeping track of wear rate and handling.

When the worn 285x75 tyres were placed against the new 265x75 tyres there was not a lot of difference in overall hight. The old were about the same size as the new.

The speedo reading for speed is only 2/3 km per hour out going by the GPS.

That is one less thing I have to do before next Tuesday.

Wayne

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Reply By: Redback - Thursday, May 25, 2006 at 10:21

Thursday, May 25, 2006 at 10:21
Well thats good news for me as i have just had my ST/Cs replaced under warrenty for cracking and blocks coming away from the carcus down to the canvas, and replaced with STTs on the 18th of may.

Hope i get that sort of performance out of mine.

Baz.
AnswerID: 174652

Reply By: Willem - Thursday, May 25, 2006 at 10:23

Thursday, May 25, 2006 at 10:23
Thanks Wayne

I also have no complaints so far with my STT's but they have only done 6000km.

They do have some sidewall scuffing though but I think this is due to low tyre pressures in extreme country.

Cheers
AnswerID: 174653

Reply By: Geoff (Newcastle, NSW) - Thursday, May 25, 2006 at 10:51

Thursday, May 25, 2006 at 10:51
Thanks Wayne,
What made you pick the 265's rather than the previously fitted 285's?

I had another Troopy question for you, now I can't for the life of me remember what it was!!

Geoff.
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AnswerID: 174656

Reply By: Barnesy - Friday, May 26, 2006 at 00:08

Friday, May 26, 2006 at 00:08
Wayne, sounds like you were happy with STT's. I was wondering if you have used ST's before and if so what do you think about their performance? I'm trying to get an idea of how my ST's will perform long-term on my around oz trip next year.

Thanks
Barnesy
AnswerID: 174801

Follow Up By: geordie4x4 - Friday, May 26, 2006 at 01:59

Friday, May 26, 2006 at 01:59
Barnsey,
I have just done about 45,000km with my ST's mostly towing a light camper from WA to SA, VIC and Tas. I did some pretty rough rocky, sandy and mud tracks and am very happy with the ST's. They have a few very minor cuts and chipps from rocky tracks in central SA and Tas, west coast but no punctures.

I have a Pathfinder fitted with 31 10.5 R15 ST. A friend has bigger 285 ST's on his Patrol and has ripped several of the tread blocks off from very rough tracks. So I don't know if it is the different compound or construction in the larger size tires or the lighter weight of my Pathfinder but my tyres are all in one piece so far.

Regardless of tread wear and chipping the ST and STT have the best puncture resistance of any tyre.
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Follow Up By: Wayne (NSW) - Friday, May 26, 2006 at 04:46

Friday, May 26, 2006 at 04:46
Barnsey,

I have not used the ST's but I know some one who has.

Vic Widman, form GDT, has run the ST's and he is very happy with them.

65,000 km and still going on his 100Series Turbo Landcruiser.

Wayne
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Reply By: 120scruiser (NSW) - Friday, May 26, 2006 at 22:19

Friday, May 26, 2006 at 22:19
And I got to see the brand new ones with the nipples still on them.
Have a safe 3 months Wayne.
AnswerID: 175004

Reply By: Geoff (Newcastle, NSW) - Monday, May 29, 2006 at 20:26

Monday, May 29, 2006 at 20:26
Hi Wayne,
What made you go for the 265's this time rather than the 285's?

Geoff.
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AnswerID: 175493

Follow Up By: Wayne (NSW) - Monday, May 29, 2006 at 20:35

Monday, May 29, 2006 at 20:35
Geoff,

The vehicle came with 265x75x16 when I got it.

Last year when I got the new tyres they didn't have the 265 when I wanted to fit them so I went with the 285.

The 285 took the edge of the performance of the Troopie, so I will give the 265 a go this year.

The way I go through tyres I will have to decide next year what size to go for.

I might have to change vehicles by then, so what I will get next will depend on the vehicle I get.

Wayne
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Follow Up By: Geoff (Newcastle, NSW) - Monday, May 29, 2006 at 20:59

Monday, May 29, 2006 at 20:59
Wayne,
Thanks for that, sounds fair.
I'm gathering information for when the showroom 750x16's wear out on my Troopy.
My most favoured option is 16x8 rims off a 100 Series GXL and something like you use.
Hmmm, "The 285 took the edge of the performance of the Troopie" I didn't know Troopy's had an "edge" to their performance!!

Enjoy your travels mate,
Geoff.
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Grey hair is hereditary, you get it from children. Baldness is caused by watching the Wallabies.

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