tyre size question?
 

I've recently replace all four of my tyres, I had Pirelli P-Zeros before, now I have fitted 4 new Yokohama AVS, I am more than pleased with the performance of the tyre really good grip and fairly quiet on the move, I have 18" GT3 wheels on the Boxster, I know the tyres are meant to been 265 rear and 225 front, but I had then fit 235 on the front, there's no rubbing on full lock or hard cornering, I was wondering if anyone has an opinion on this (think it's ok). My car is a 2001 S with standard suspension set up.