How much does grip change with tyre age?

[Nasher]

Don't buy any tyres made in China basically. They are all rubbish and when they wear the grip just goes off a cliff.

Apparently there may be a law coming to put an age limit of 10 years on car tyres, they already did it for HGVs. Too many people are only looking at the tread depth to decide if a tyre is safe. If it's solid with cracks all over it, it's not safe.

 

[tom_e]

5 years is the oldest I'd go, that's generally accepted oldest you'd put on a bike so I'd carry that over to my car not that I'd ever get a set to last that long.

 

[Avalon]

I don’t think grip gets worse as the tyre tread wears.

Wet grip is the problem, the tyre looses its ability to displace water.

That isn’t how tyre compounds work - they harden and become less supple with age/UV exposure which translates to less grip in all conditions, but it tends to be more noticeable in the wet. The set I just replaced were solid by comparison to even the same model in ‘new’ guise. I swapped them out with 5mm+ left on the fronts and the difference is significant.

 

[SkodaMart]

That isn’t how tyre compounds work - they harden and become less supple with age/UV exposure which translates to less grip in all conditions, but it tends to be more noticeable in the wet. The set I just replaced were solid by comparison to even the same model in ‘new’ guise. I swapped them out with 5mm+ left on the fronts and the difference is significant.

I’ve never remotely noticed lack of grip in EOL tyres in the dry.
They can be alarming in poor weather though.