DJ01 are not the 'fast' tyre. Putting the Z1 up against the DZ03G is a totally different story.
I know this maybe a little difficult for the Rally guys to understand, especially if you have been around for a while as this time attack 'stuff' is relatively new. But the UTQG is the adopted method for class designation at club level (I know CAMS Vic don't really know much about this as it is not reflected in there Sprint Championship regs) and Internationally.
When you have
- World Time Attack Challenge
- Evo Club
- SAU
- MX5
- WRX
- list goes on
using UTQG as the method, doesn't it make sense...?
Also, which tyres don't have UTQG that are 'road legal'? Some tyres may not list them, but I would imagine all have rattings available from the manufacture (website).
It looks like it has been a steep learning curve from the ARC to include this type of club level gear at their event and I have to say it is great that they are listening!