Im looking at replacing the tyres cos they worn, Ive been offered a pair of 205/40/ZR17's at a good price but am wondering what difference it will make with the driving of the car?IIRC the tyres are normally 205/45/ZR17?
With that spec you'll be getting -3.25% difference in rolling circumference which means the speedometer will be out, the recommended figure is +/-2.5%. If it were 215/40 then you'd be okay.
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