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shanecl



Member Since: 20 Mar 2013
Location: Louth
Posts: 448

Ireland 1989 Defender 90 V8 Petrol CSW Auto Firenze Red
Cooper STT Pro K rating
Hi Folk's

I want to get the Cooper STT pro but can only find them in the K rating 😬is anyone running them
Post #982645 16th Feb 2023 2:54pm
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camelman



Member Since: 27 Feb 2013
Location: Peak District
Posts: 3308

United Kingdom 
Depends what size you are looking for, most of the larger sizes are only K rated (68mph), the smaller ones are Q or R 
Post #982647 16th Feb 2023 3:42pm
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shanecl



Member Since: 20 Mar 2013
Location: Louth
Posts: 448

Ireland 1989 Defender 90 V8 Petrol CSW Auto Firenze Red
Ah ok, i was looking at 275/70/18
Post #982649 16th Feb 2023 3:49pm
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camelman



Member Since: 27 Feb 2013
Location: Peak District
Posts: 3308

United Kingdom 
All of the sizes and the speed ratings are here:

A lot of the 18s are only 68mph.

https://www.coopertire.co.uk/tires/discoverer-stt-pro-p.o.r 
Post #982651 16th Feb 2023 3:57pm
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shanecl



Member Since: 20 Mar 2013
Location: Louth
Posts: 448

Ireland 1989 Defender 90 V8 Petrol CSW Auto Firenze Red
I cant see myself going over the 65mph but i think id feel a little safer with a bit more ley way on the speed rating.
Post #982654 16th Feb 2023 4:17pm
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DSC-off



Member Since: 16 Oct 2014
Location: North East
Posts: 1343

United Kingdom 2015 Defender 110 Puma 2.2 XS CSW Aintree Green
Even back in 1985 that wasn't an acceptable speed limit.


Click image to enlarge

Sorry Marty, we can't save the world, it's these Cooper tyres...
Post #982692 16th Feb 2023 8:00pm
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shanecl



Member Since: 20 Mar 2013
Location: Louth
Posts: 448

Ireland 1989 Defender 90 V8 Petrol CSW Auto Firenze Red
😩😩🀣🀣🀣
Post #982771 17th Feb 2023 11:54am
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106Lad



Member Since: 29 Oct 2021
Location: Northern Ireland
Posts: 27

United Kingdom 
I have 17inch modulars and they seem to have a different rating.
Post #985330 12th Mar 2023 9:39pm
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marsie



Member Since: 17 Nov 2011
Location: sheffieldish
Posts: 530

England 2010 Defender 110 Puma 2.4 XS CSW Galway Green
Mine has 265 16 STT pros and are K rated Thumbs Up 2000 90 TD5,galv chassis, d2 axles ,Bas remap , alisport intercooler , d2 transfer box , side windows-more to come-much more!! *GONE*
2004 110 TD5 Double cab. *GONE*
2010 110 2.4 XS station wagon
Post #987340 30th Mar 2023 11:23am
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camelman



Member Since: 27 Feb 2013
Location: Peak District
Posts: 3308

United Kingdom 
Just be aware that K ratings mean they are only legal to 68mph max speed 
Post #987350 30th Mar 2023 11:59am
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FD7



Member Since: 16 Feb 2021
Location: Midland
Posts: 167

2006 Defender 90 V8 Petrol ST Auto Chawton White
I have some older 265/75/16 Cooper STT pro's and they're Q rated, but can't understand why the newer variants remain K rated.
Post #987396 30th Mar 2023 7:37pm
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DSC-off



Member Since: 16 Oct 2014
Location: North East
Posts: 1343

United Kingdom 2015 Defender 110 Puma 2.2 XS CSW Aintree Green
Yes, you do have to question what do they know about their tyres, their own specifications and testing, that only gives a 68mph speed rating?

Or you can pay less for another manufacturer's Q rated tyre that's OK for 99mph.
Post #987486 31st Mar 2023 7:16pm
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Ianh



Member Since: 17 Sep 2018
Location: Essex
Posts: 1695

United Kingdom 
Running tyres that have a lower speed rating than specified for your vehicle could cause your insurer to not pay out a claim. So you also need to check with your insurer that they are happy with you running tyres that are below the manufactures specification for your vehicle. The same can be said for the load index as well.
Post #987499 31st Mar 2023 10:04pm
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FD7



Member Since: 16 Feb 2021
Location: Midland
Posts: 167

2006 Defender 90 V8 Petrol ST Auto Chawton White
Not questioning their expertise, more why they didn't re-produce a Q rated offering as they previously did (or maybe they did, it just seems nobody wants to offer it?). Afterall their scriptures detail they're much improved over the prior iterations.

If its an option for you, the BFG KM's (265/75/16) I have on another Landy are Q rated and my replacement wheels / tyres on BFG 285/60/18 albeit all terrain are S rated!

Very good point re: insurance!
Post #987502 31st Mar 2023 10:21pm
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shanecl



Member Since: 20 Mar 2013
Location: Louth
Posts: 448

Ireland 1989 Defender 90 V8 Petrol CSW Auto Firenze Red
Thanks FD7, i think i'll go down the BFG route, trying to find a size that would look a little fat with the all terrains if ya get me
Post #987731 3rd Apr 2023 9:43am
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