The standard tyre size for the XC is 215/65 R16, and the standard tyre supplied is the Pirelli Scorpion, which is a compromise for both off-road and on-road driving. Since I will be spending most of my time on tarmac, I am contemplating switching to standard road tyres which will be quieter. HOWEVER, road tyres for this size are very expensive. I was told the Pirelli P6000 225/60 R16 would be much cheaper than the 215/65 R16 (almost by half). I am not sure if I should change the tyre size. Any suggestions?