ads274 Posted December 12, 2007 Author Share Posted December 12, 2007 I've got 18 inch wheels on the car so it sounds like that will pretty much negate the inaccurate speedo Link to comment Share on other sites More sharing options...
Homer Posted December 12, 2007 Share Posted December 12, 2007 I've got 18 inch wheels on the car so it sounds like that will pretty much negate the inaccurate speedo Not at all, its the rolling diameter of the tyre that matters, not the wheel diameter itself. Link to comment Share on other sites More sharing options...
SUPRASUZUKI Posted December 12, 2007 Share Posted December 12, 2007 Indeed. There's no need for error with modern sensors and electronics, so why manufacturers build an error in beats me. I suspect mine under reads due to the rear tyre size (285/35-18). Link to comment Share on other sites More sharing options...
Homer Posted December 12, 2007 Share Posted December 12, 2007 Indeed. There's no need for error with modern sensors and electronics, so why manufacturers build an error in beats me. I suspect mine under reads due to the rear tyre size (285/35-18). Yep, that would mean under read for sure! Just yesterday I found even a 265/35-18 was around 0.5cm larger rolling diameter than the stock size, both sets of tyres being fairly worn. 285's will make a big difference. Link to comment Share on other sites More sharing options...
ads274 Posted January 8, 2008 Author Share Posted January 8, 2008 Bumped as I updated my original post. Link to comment Share on other sites More sharing options...
hogmaw Posted January 9, 2008 Share Posted January 9, 2008 Bumped as I updated my original post. Nice feeling isn't it. Link to comment Share on other sites More sharing options...
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