Guys, hope you can help. I need two new front tyres for my 07 plate car. It currently has Conti Contact Sport 2's. Is it okay to put two new Contact Sport 3's on the front (It appears that Continental have replaced the 2's with the 3's as the 2's are no longer listed on their website) or would it be better to stick to the 2's which I can still get. Advice appreciated, thanks.