Michelin Pilot Sport Cup 2 - how long do they last?

[Mankers]

I have a Nov 2014 GT3, it’s still on original tyres having covered 8.5k miles. There is still 3-4mm of tread left. Do they deteriorate over time? Mine are 6 years old....worth replacing now? Do they go ‘off’ so to speak?

[Corky]

I am no expert, but the standard view is that tyres have a shelf life of between 5-7 years, if it were my car then I would change them, all IMHO of course.

[RDMcG]

Depends on how you use them of course. I have a Sept 2015 GT3RS and just replaced the tires with 10,000 miles on the clock for new Cup 2s.

[isaldiri]

RDMcG said:

Depends on how you use them of course.

Not really, after a certain amount of time irrespective of use the rubber hardens up and just doesn't work as it might when newer.

OP I would certainly consider changing tyres after 5 years from the date stamped on the sidewall.

[bigmowley]

Mankers said:

I have a Nov 2014 GT3, it’s still on original tyres having covered 8.5k miles. There is still 3-4mm of tread left. Do they deteriorate over time? Mine are 6 years old....worth replacing now? Do they go ‘off’ so to speak?

Christ almighty there is one GT3 that hasn’t been spanked, never got more than 5K out of a set and often under 3K miles.

[hunter 66]

Too treue it depends what you want from the tyre .... old tyres with 3-4 mm tread cool for the trip to there Tesco ...but on track they ill not work as well , in fact Cup 2 are really good on the first track day ( they are good ) after that there is a big drop off compared to dunlop ....again just an opinion

[Mankers]

isaldiri said:

RDMcG said:

Depends on how you use them of course.

Not really, after a certain amount of time irrespective of use the rubber hardens up and just doesn't work as it might when newer.

OP I would certainly consider changing tyres after 5 years from the date stamped on the sidewall.

Thanks, that was what I suspected, hard to describe but rears seem to take longer than I expected to get heat into them (purchased this year so have only put 500 miles on it). Manufactured ‘4214’ which I believe is 42nd month 2014, so c.6 years old.

It was certainly a handful when I picked it up in Feb, sub zero road temps prob didn’t help traction...

Was considering Dunlop’s or perhaps PS4’s... not planning much track action, but Euro driving trips when things get back to normal....

[Melvynr]

Does anyone know the tread depth of the rear 305/30 20 inch N rated Cup 2 when new?

[Porsche911R]

tyres are more to do with Very hot heat cycles, if you have not tracked the car the tyres will be fine.

if the car been tracked and had >30 odd hot heat cycles that tends to ruin them a bit before then run low on tread.

[Digga]

Well here is a fact: at 10 years old the tyres are effectively scrap. Natural rubber, the expensive component, biodegrades.

It is by no means a linear scale of deterioration from 'new' (which could be varying degrees of old with some retailers trying to palm you off with 2 year old stuff) to scrap.

Exposure to UV or chemicals speeds up the process. As others say, heavy use - heat cycles - can also influence the rate of deterioration. They don't work that well anyway once the treads are worn down and closer to the core rubber. Plus, even new, they are really not ideal if you get caught in a heavy downpour.

[Tony1963]

Mankers said:

Manufactured ‘4214’ which I believe is 42nd month 2014, so c.6 years old.

Week?

[nw942]

As a slight aside, is there much of a performance difference betwwen the N0 tyres the OP has and the N1 tyres he will probably have fitted?

Asking mainly from a track POV.

[isaldiri]

nw942 said:

As a slight aside, is there much of a performance difference betwwen the N0 tyres the OP has and the N1 tyres he will probably have fitted?

Asking mainly from a track POV.

N1 will be faster, not entirely clear just how much though.

[Mankers]

Thanks all, useful info!

N0 vs N1 what is the difference? Will there be a warranty renewal (111 point check) issue if N1 used instead of N0?

[PowerMalc]

Tyres to pass the 111 check must all be N0 or N1. no mixing
Less then six years old and minimum 3mm tread, and all Pirelli or Goodyear etc
Even after doing all this they are not covered by the extended warranty !!