Exige V6 tyres?

[Blunder001]

Hi all,
Advise please?...

My roadster is currently running on Pirelli Corsa Asymetrico is it tyres?
The ones where the front and rears have slightly different tread patterns.

Anyway, I need new rears but these tyres are not available now!... anywhere in the UK that I can find...

The only 'equivalent' are the Pirelli Corsa Rosso which are similiar but the 'comfort' version?

I am obviously concerned if the grip levels are the same front and back and will I ever notice?
I dont want to get a little enthusiastic, shall we say and lose the rear!...

Alternative being change all 4 tyres!... if so to what?

Would appreciate your advise

Thanks

[Blunder001]

Thanks guys, appreciate your help
Definitely given me something to think about