shouldnt be a problem as blue noted above ^
the standard front size for the 18" rims is 225 so there shouldnt be any problems with fouling either.
as a suggstion also, i always check my wear patters on tyres, especially at change over, and for what a decent set tyres cost its worth getting the alignment done once a fresh set is on (alignment is a minimal cost), bad road surfaces can take its toll on alignment and significantly affect the handling as well as wear rates on tyres (sorry tires)