Avon ZZRs starnge wear from Llandow?

[gareth h]

Guys any idea what is causing this, I had some part worn ZZR tyres which I fitted for the track day at Llandow, when I got home I noticed that the inner 50% of tread on each front tyre had strange wear on motorcycles It is often referred to as tearing, any idea what could be causing this?
Thanks
Gareth

[gareth h]

Thanks guys, it was the uneven wear I didn't understand as both fronts where tearing on the inside, the outer sides where fine, I would have thought the outer shoulders would have shown the most wear

[gareth h]

Thanks guys, it was the uneven wear I didn't understand as both fronts where tearing on the inside, the outer sides where fine, I would have thought the outer shoulders would have shown the most wear