I bought a A8F back in May which was fitted with Avon Storm Ultra, the Avons were 2/3rds worn and felt a little weird. After a rear puncture replaced with Metzler Roadtec 01's which are a massive improvement. Handling and steering are excellent, very confident wet or dry with quick warm up. No siren noise mentioned in a earlier post. Coming up to a 1000 miles with no noticeable drop in performance or wear - not cheap but highly recommended.
I will take a few photo's on the way home and upload when I get home.
Anyone know a good online site for a workshop manual? Cheers Al.