Tricky one this mate. Part of me is thinking its nice to be putting the car back to how it was with the softspokes, it did allways drive nicely on them. My last black Saph drove lovely on 215/50 17 tyres but the other part of me likes the idea of bringing the car back like before but better, big brakes and more up to date or in fashion 18"Comps. I dont know how a Saph drives on 18"s but I wouldn't think it,d be too bad if you're not on coilovers etc but if funds are tight put the softlines on and sell the comps and brakes, you should be quids in !