Speedometer reading far too high (more than 10%)
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Pit Crew
Joined: Dec 2013
Posts: 153
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From: Ohio
Speedometer reading far too high (more than 10%)
Does anyone know whether there are any speedometer settings in Techstream so I can fix this issue? I just got a set of 235/45R17 to replace the stock 225/50R17 so there shouldn't be much difference... and yet, I'm only going 52 MPH when my speedometer is reading 60 MPH. It seems to be about 8 MPH high at most of the speeds I compared with my two GPS devices. This is more than the 7% that Lexus supposedly has for their tolerance, so something's wrong for sure.
Thread Starter
Pit Crew
Joined: Dec 2013
Posts: 153
Likes: 1
From: Ohio
Pole Position
Joined: Jul 2009
Posts: 3,387
Likes: 61
From: FL
I see it now, sorry about that.
I believe my speedometer's 4-5mph off at high speed (considering I'm doing 70MPH on a 65), that means at high speed you should be off 2-3.
I'll remeasure tomorrow to make sure. I take my readings off of phone GPS & the speed trap machine the highway has (as there's construction).
I believe my speedometer's 4-5mph off at high speed (considering I'm doing 70MPH on a 65), that means at high speed you should be off 2-3.
I'll remeasure tomorrow to make sure. I take my readings off of phone GPS & the speed trap machine the highway has (as there's construction).
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