new to owning a BMW after about 20yrs of admiring them. I traded a 1990 Landrover Defender for a 51 plate 330ci cabriolet!! :wub: fan-blimming-tastic!! i'm up in Scotland and the weather has been awesome for a week now and have had the roof down a number of times.i suppose i should post a question about the tyres in another section, but if you all dont mind, i'll ask here. what are the correct sizes for front and rears on 18" M-sport wheels?