Pirelli Diablo Corsa Ii

I have these on my S3RS . They have gone the same as yours, with the clearly visible edge between the compounds.. but no splitting. It did worry me a bit but doesn't seem to be getting worse. If I had splitting like that I would go back to supplier and ask for
an official opinion as it could potentially be a manufacturing / safety issue.

I don't think I will buy again even though they feel great on the road....

 

Looking at the last picture i'd say you could have a problem with passing an MOT if the cuts are deep enough to see the cords. Check the motorcycle mot manual on line for full details.

 

the corsa 2 is a multi compound tyre and the lines are very visible in normal use. either youve been track riding or giving it big hand fulls on that lovely granite tarmac you have up there. they look like you have some cold tear going on. run these at standard pressures on the road. if they start delaminating replace them other wise crack on. im on my second set. enjoy.

 

I've had a few sets of Diablo Corser 2's on my BMW S1000rr (de-catted and 198bhp) and they've always been great, they always show the line between the two rubber compounds, I ride it like a loon but they've never split like that.

 

Never seen that before and your right to ask questions

 

That does look strange. By the wear, it looks like you only go around corners. To me, it looks like the 2 compounds are delaminating. I would get hold of Pirelli UK and send pictures and ask if the tyre has a problem.