Devious Posted November 22, 2012 Report Share Posted November 22, 2012 Higuys.... My speedo is approx 10mph faster than my actual speed. Is there a simple ish way of calibrating them as they obv werent done when they had new faces applied... Link to comment Share on other sites More sharing options...
carlasumm Posted November 22, 2012 Report Share Posted November 22, 2012 take the clear plastic cover off the front drive down the road with your sat nav and just keep adjusting it until they match Link to comment Share on other sites More sharing options...
shaungt4 Posted November 22, 2012 Report Share Posted November 22, 2012 take the clear plastic cover off the front drive down the road with your sat nav and just keep adjusting it until they match Will have to do this to mines about 10mph out to, Link to comment Share on other sites More sharing options...
WheelRepair Posted November 22, 2012 Report Share Posted November 22, 2012 We fitted one on the castrol 205 many years ago. We didn't have the luxury of sat nav or smart phones in those days, and would take 2 cars down the duel carriage way at a pre arranged speed and messed with it for hours! Hours of fun! Link to comment Share on other sites More sharing options...
GreyRacer Posted November 22, 2012 Report Share Posted November 22, 2012 There are a couple of correct and safe ways to re-calibrate. Check out the 'Knowledge Base' or search but this one is the one i used 3-4 years ago and my speedo is spot on at 30 mph, +1 at 40, +3 at 70. The rev counter needs to be spot on as well especially for those that have a 190. Mine is exact. http://www.celica.talktalk.net/NeedleReCalibrate.htm Link to comment Share on other sites More sharing options...
Black Knight Posted November 22, 2012 Report Share Posted November 22, 2012 Higuys.... My speedo is approx 10mph faster than my actual speed. Is there a simple ish way of calibrating them as they obv werent done when they had new faces applied... Have you changed your wheels lately? Incorectley sized tyres alter the stock rolling distance of the wheels which causes false readings on the speedo If so this little tool should help http://www.alloywheels.com/Tyre_Calculator Link to comment Share on other sites More sharing options...
Bill T Posted November 22, 2012 Report Share Posted November 22, 2012 They're all shite anyway. Every Speedo I have ever had has over read. On the plus side it does help with those speed limit things Link to comment Share on other sites More sharing options...
Ghoulie Posted November 22, 2012 Report Share Posted November 22, 2012 take the clear plastic cover off the front drive down the road with your sat nav and just keep adjusting it until they match +1 Mine says Im doing 10mph slower than I am Link to comment Share on other sites More sharing options...
Devious Posted November 22, 2012 Author Report Share Posted November 22, 2012 That's what I meant ie reading 40 actually doing 30... Cheers Old Grey Link to comment Share on other sites More sharing options...
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