AgtX80 Posted March 24, 2008 Share Posted March 24, 2008 A few things made me think recently that the speedo on my car is waaaaay off (only had it a few weeks). did people suddenly start going really fast since i got this car?? hmm so i got my mate to go ahead at 70 & upwards. At 70 im doing 75, 80 im doing 87. Seems to be ok at 30-40 where it really matters. Is there much you can do? Quote Link to comment Share on other sites More sharing options...
AndyT Posted March 24, 2008 Share Posted March 24, 2008 70 on gps = 73 on clock on mine. 30 & 40 are nearly spot on too. You're still within 10% of true speed though. Not sure if the rolling radius of your wheels will affect the readings. Quote Link to comment Share on other sites More sharing options...
MrRalphMan Posted March 24, 2008 Share Posted March 24, 2008 All Most speedo's read up to 10% fast. Mine's the same.. Quote Link to comment Share on other sites More sharing options...
Dave Posted March 24, 2008 Share Posted March 24, 2008 mines the same sat nav says 70 mph clock says 78 but i have got 18s on Quote Link to comment Share on other sites More sharing options...
bluecoup Posted March 24, 2008 Share Posted March 24, 2008 reading under is ok (70 indicated = 63) , a speedo should never read over though (70 indicated = 77) just lazzy toyota my honda was spot on with gps from 5 to over 100 Quote Link to comment Share on other sites More sharing options...
MrRalphMan Posted March 24, 2008 Share Posted March 24, 2008 Toyota were not lazy, they built in a little safety zone so you shouldn't get caught out. As several other people on here have stated the direct feed from the ECU is spot on. Most car makers do this. Quote Link to comment Share on other sites More sharing options...
Nic Posted March 24, 2008 Share Posted March 24, 2008 A few things made me think recently that the speedo on my car is waaaaay off (only had it a few weeks). did people suddenly start going really fast since i got this car?? hmm so i got my mate to go ahead at 70 & upwards. At 70 im doing 75, 80 im doing 87. Seems to be ok at 30-40 where it really matters. Is there much you can do? What wheel and tyre sizes do you have fitted? Quote Link to comment Share on other sites More sharing options...
AgtX80 Posted March 24, 2008 Author Share Posted March 24, 2008 Stock 16" 50 profiles. Plus my mate was in his scoob with not sure what wheels on, not standard. So his will be over, his 70mph is 75 on mine, maybe mine is 10mph out. My last car was a toyota & had no problems there. Like i say since i got this, the traffic seems to have speeded up a lot lol. I just wondered if something went wrong when they converted from kmph to mph Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.