Sorry Greg but the coming show is not NCRS.
With our shows a tyre is just a tyre.
New Old or Bald and rock like, a tub of tyre shine will be all that is needed to make the difference.
And once applied, you too will be able to have black knees, like any true C4 owner who works on his own car.
And since I'm entering a C4, you had best disregard anything I advise you.
Regards.........cant talk anymore I have to get a Beamer operational.......