Just fitted sportsmarts, and 55 profile after all the advice here, and they seem good so far. Only done 50 miles on them, so have chicken strips wider than your average runway......
No worries Colin. You could have got youself a set of bargain tyres... If you fit a 55 profile your speedo will not read correctly? Although i'm sure it won't be by much.
Not too worried about the speedo on the blackbird, as I tend to use that for taking the missus out and going to work.
Scrubbed in the sportsmarts over the past couple of days. I've done about 90 miles on them. They feel much better than the Avon storms and I feel a lot more confident with then on the bike. Thanks again to those of you that took the time to recommend them to me.