Posted October 7, 200915 yr Hi guys, i have put a set of 17 inch rims on my ghia x with yokahama 205 40 r17 on. i have only just found out this throws out my speedo. i dont know what size original ghia x stock tyres were so cant use a calculator. does anyone know what difference it would make at 30, 50 and 70mph as i live where there is plenty of speed cameras, lol.
October 7, 200915 yr well your speedo wil already underead from standard there may be a 1-2mph difference but nothing to worry about
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