Nit-picking slightly, the late TurboD90 wheels are 7.5" front and 9" rear, not 8" and 9". However, if you prefer slightly narrower wheels and tyres on a late Turbo, as I do for overall road use, just bung a set of S2 wheels on: i.e. 7" and 8" D90s, late offset, using 205/55 16 front tyres and 225/50 16 rears. That's what I am running on mine for everyday wear, and it's lovely. S2 wheels look pretty standard on the car, and enable it to be a bit more light-footed and delicate. I have about 300 bhp and a limited slip diff in good working order and have always felt the car has excellent traction. In deference to the drive shafts and UJs I don't habitually use full everything in bottom gear but can use full waft in second in even quite poor weather. Another advantage of S2 sizes is that there's a wide choice of available tyres in the split S2 sizes than for the late Turbo rears with their unusual 245/45 16 section.