I had the nasty 13" steelies on my CL, they had 175/70/13's on them and I changed them to my RX's which are 195/45/16's and they have little affect on the speedo (just checked it now - 1.2% greater it says)Go on: http://www.kouki.co.uk/utilities/visual-tyre-size-calculator (Dom reccommended it to me a while back - seems to be reliable also ) May aswell get a second opinion.I thing the ratio for your steely's tyres is 70 though
My speedometer was more accurate and the car drove better when I went from 13 to 195 on 15's.
Quote from: Bellend on 28 December 2011, 20:23My speedometer was more accurate and the car drove better when I went from 13 to 195 on 15's. I'll just refurb then and bang them on with some 195's