yes, technically those 2 sizes are almost identical as for diameter etc.
whether 15' rim clears your calipers - that I dont know. 16' Focus alloy barely clears my 320mm set. If you have 300mm on front, it may be close call aswell.
whether your car have any issues with those, apart from fitment problems - dont think so, will probably get more wobbly but BCM/DSTC shouldnt notice difference.
