The tyres on the 180 are 205/45-17.............I know the middle number is the aspect ratio, ie percentage of height compared to width. What would happen if I fitted 205/50-17's? Would it make my speedo run slow, as of course the wheels would go faster...........?
Only asking cos at work we getting rid of 15 Uniroyal 205/50-17ZRs as we have changed tyre suppliers and uniroyal and contis have been replaced by Pirelli and michelin......................
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