Hi All,

some recommendations please for rear tyres on my 2012 XKR supercharge.
285/30/20.
currently on Pirelli’s.
lack of grip in the wet atm.
thanks.

 

lack of grip as they are worn? near freezing temperatures? slamming your foot down on the accelerator? Are they properly inflated?
Specifically “which” Pirellis are you running? There are a few choices.
Btw, Are they the same tires on the front?

 

There are almost as many tire threads in this forum as there are oil threads.

Also, so avoid redundancy, all XKRs are supercharged. No need to add the caveat.

 

True enough however,
-tire technology changes,
-some ignore the the matching if the tire to
- weather
- road conditions
- driving capabilities
and the little things like tire pressures, alignment and $$ matter ;-)

Which justifies my position of running 3 distinct sets. The right tire for the job.

 

Find two or three tyres that interest you, and if you are not sure which one will get your money, choose the one with the lowest treadwear rating..

 

Check out reviews on TireRack.com…

 

Hi Guy,
thanks for your reply.
pirelli Pzero on the rear, Dunlop sport max on front.
I have checked the pressures and all ok.
rear tyres approximately 5 mil of tread.

 

Apology’s but I’ve just joined the forum and still navigating my way around.
Thanks for reply !!

 

In Europe, the Michelin Pilot Sport 4S is probably the most popular sports tyre but has of late some very good competition. Also consider:

Continental SportContact 7
Bridgestone Potenza Sport
Goodyear Eagle F1 SuperSport
etc, ...

Some professional test results:
https://www.tyrereviews.com/Article/...-Tyre-Test.htm
https://www.tyrereviews.com/Article/...-Tyre-Test.htm
https://www.tyrereviews.com/Article/...-Tyre-Test.htm
https://www.tyrereviews.com/Article/...-UHP-Tyres.htm
More test links here: https://www.tyrereviews.com/Tyre/Con...tContact-7.htm

I went from the standard Dunlops at the front and Dunlop RTs at the back to the Contis. I had no issues with the Dunlops, even though they seem to be hated by Jaguar owners that comment on them. The SportMaxx J tyres on the front were a bit "hard and dumb" in feel/feedback unless you pushed them harder when they responded fine but they didn't encourage you to do so. However, the Contis are dramatically nicer to use - way more feel. Transformed the car. I would read a few of the tests and compare the results with your car usage and driving style and pick one of the top tyres. The XKR is still good enough to benefit from the best modern rubber.

 

great really appreciate your reply Neil.

 

Mine lose grip in the cold and mine is only a 4.2 . The tread are good but they are 9 years old so I guess getting a little hard.

 

Mine were in that ballpark when I replaced them. They didn't seem problematic in summer. Mine doesn't usually come out when the weather is too cold or really bad. However, new rubber made a big difference. Tyre technology has moved on a lot in the last decade and it is a good time to tap into it.

 

Lots of info but nothing about treadwear ratings that I can see.!

 

Treadwear and traction grade values are more a US thing. Europe doesn't seem to refer to those values at all. It uses an equally unreliable EU label showing wet grip, fuel consumption and noise. However, both systems rely on the manufacture to provide the value from their own in-house "testing" and these values rarely seem to match controlled test results so are not reliably comparable across manufacturers. Some tyre tests do wear test where it is possible to see the life expectancy prognosis at least but these tests are expensive and often get left out.

 

I used to make a direct co-relation between softness of rubber (grip) and treadwear rating. Thus less room for subjective inaccuracies.
Winter tires are not required to post treadwear ratings. Haha. A tire built to grip the road, doesn't carry a rating of grip!