Hope it's okay to ask a couple of questions?

I have a Roadster 2007 and when I bought it a year ago it had done 6K and it has now done 12K. We are competing in a 2000 mile round trip rally next month raising money for Macmillan Nurses and talking to the garage they said:

The tyres are 9 years old and it would be best to change them because they become hard with age. Is this right and if so do I go for another set of Avon ZV3 or something else? I know I should work this out from how the car drives but I drove around for a year with a semi collapsed rear shock and never noticed!

They also said Mulfab have a steering damper which might help with the steering wobble around 50MPH. Does anyone have any advise on this please?

Any help or suggestions would be much appreciated.


Shakey2
2011 Audi TT TDI