Do most people use the same size tyres back and front on sapphires, mine has smaller on the front ie 205 45s on rear, 205 40s on front. I am moving up to 17x7.5 from 16x7 what tyre sizes do you recommend. Thanks
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I have wider tyres on the rear due to the car being rear wheel drive.

same profile all round.

 

215/40/17 same all round

 

215/40x17 upfront and 235/40x17 at the rear ...