I ts a series ran at the rac driving center and using different courses and formats, and it's a total time on each run like a rally stage rather than lap times. Yesterday it was the course they use on targa west so it's fairly fast so suited the Astra. I like it because you run spread out on the track (also like rally) and there is no passing if you catch a car you just slow up and you get another run.
With the AD08r I aim for a hot pressure of 32 it's a little slippery for the first couple of corners but perfect after that