Do Tyres go off?

[rat840771]

I currently have PP3's on my bike and they are about 1500miles old. They have done 2 half day track days and performed well.

After pulling the bike out of the garage for the 1st time this year, the tyres do seem a little hard, is this just due to the colder temps or could they have gone past there best? I can also see the different compounds in the tyres as there is a clear line.

I just don't have as much confidence in them, as I did have a bum clenching moment last week when exiting a roundabout, as I accelerated hard in 2nd and I could really feel the rear slide ( must have looked good) but st me up!

[rat840771]

Well i have another track day coming up, so ill see how they perform again.

I think it was just a mixture of too much throttle, cold roads with limited grip!

When the rear expires can i put a MX7RR on the rear with the PP3 on the front as this seems to popular tyre.