Hi
I am running BT003 Racing Street tyres on my Skorpion sport and I wouldn't recommend buying them. The front tyre fitment is 120 / 60 rather than 110 / 60 and I found that on slow speed corners ( like roundabouts ) they felt like you drop off the edge which doesn't inspire confidence. I dropped the pressure down on the front tyre but still it isn't the super planted front I would expect so I have put this down to tyre size, rolls a little.
How old was the Pirelli tyre as I wouldn't expect it to be hard and skittish unless it had been sat for ages / was really old. Even the Maxxis that were on when I bought the bike didn't have a problem at the rear.
I am going to run these tyres until the rear has worn down and then I think I will swap both for Pirelli Diable Rosso 2 in the correct size
