I have had P Zeros on my old R and yes they did go out of shape and they are bloody expensive!
I also had Vreds Ultracs and they were excellent. No tyre noise and excellent handling. Good price too. Tread pattern was sexy as hell too.
On my current car i had Vred sessantas fitted all round when i first got her and they are excellent. Still got 5mm + of tread and they were fitted 18 months ago!
Only thing to remember with Vredestein Sessanta tyres is you MUST inflate the them by an extra 4psi over whatever the manufacturer states. ie..on my R the tyres should be 36 psi all round (as per hand book and car sticker). So i run them at 39psi. Any Vredestein main stockist should tell you that. He did explain it to me but its to do with the tyres construction. The Sessanta is a High Performance tyre and therefore is expected to be fitted to a car that goes round corners fast! So Vredestein contructed the tyres shape in such a way that its stronger on the outside edge, (Difficult to explain on here). A brand new tyre (any brand) will stand up straight on flat level ground, a Sessanta won't, due to its construction! The additional 4psi is to allow for this and prevents the tyre scrubbing on the outside edge. They are a directional tyre and must only be fitted the correct way. If fitted the wrong way they will seriously affect the cars handling.
As always, a FULL 4 wheel alighnment is a must when you have new tyres.
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