Just got a 07 focus 1.8 tdci ghia saloon and its on 16" wheels and the arch gap is horrendous. Will fitting some 18s (hopefully st wheels) and 30mm springs get it sitting nice or am I going to need coilovers. Seen a few modified examples that claim to be on springs but I can't see 30mm springs taking away all that gap unless the 18s will reduce it also?
Wanting to get it looking like this

Thanks