Tyres

[Diver]

Thanks. I will run with 32 and 35/36.

Sunny part, aren't you the lucky one. I am in the Midlands.

[Diver]

Sorry. 32 and 34/36

[argonsagas]

There is a simple truth about tyres.....they ALL age, and the aging begins as soon as they are made, not after you buy and mount them.
Check the sidewall for the manufacturing date.

How quickly they age/deteriorate depends on weather, ozone prevalence, use and storage conditions.
Even if bought new and unused, if they were not stored properly with the distributor/seller they may be "older" than you think.
The more exposure they get to sunlight and invisible ozone makes it happen sooner.

The rubber hardens as they age, thus progressively providing less grip to the road surface.
The harder it gets the less traction it provides, so a general rule is the best years of their lives is about five years.
Still usable after that, yes, but they will not stop degrading. .