BBS Split rims fitment

I have recently bought a set of split rims (rm) 7" wide at front 7.5" at rear, the car is on coil overs which are wound done reasonably low and the tyres are fouling.The tyres are 195/45/15 which I thought was a standard size people use, can anyone advise what other tyre sizes can be used ? Ive seen numerous feature cars which look lower than mine with similar width rims or are they undriveable?

you may need to get your 'arches rolled.'  this allows for the car to be lowered without fouling.

I have had the rear arches rolled already,think it will have to be stretched tyres.

how much are they fouling? are they touching the arch when the car is on the ground?? if its on coilovers y not just raise it? may need roll more of the arch or flare them the is a topic in restoration and he has do that! take a look its a black g60 with bbs.

Hello mate i run 8's on the rear and 7's on the front.i have had all 4 arch's rolled and on 195's they hit the arch's when i lowered it.
I used a 175/50/15 tyre on the rear as it gives a slight stretch and that solved the problem.Fronts get very close to the wings on 195's so i opted for a 165/50 and all was well.
what are the offsets of your wheels ??