concerning the tyres
In order for you to get past first base, warranty-wise, you need to check that the Bridgestone tyre code contains KZ (older tread pattern) rather than XZ (newer); then once you can show sufficient variation in wear (as you can seemingly), you have a strong hand for replacement.
As for the cradle. You'll ditch the old one as it only supports old phones and be buying a bluetooth one. Far better. £99 exclusively through the forum.