 What would cause a speedo to read high?, Reads 90 when I'm really going 65 |
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| matthepcat |
  Apr 21 2016, 09:05 AM
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#1
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Meat Popsicle  Group: Members Posts: 1,462 Joined: 13-December 09 From: Saratoga CA Member No.: 11,125 Region Association: Northern California  |
Like the title of this thread states, what would cause my speedometer to read a higher speed than I am traveling?
Is this a mechanical issue with the factory gauge? (IMG:style_emoticons/default/idea.gif) |
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| porschetub |
Apr 21 2016, 02:09 PM
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#2
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Advanced Member Group: Members Posts: 4,886 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
Only real solution is to have the speedo regeared then you are stuck that profile tyre.
The rims look like 16'' ? I'am guessing the profile is 45 series or thereabouts, from memory my 205/55/16's calculate out at somewhere close to 1% error. |
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Posts in this topic
matthepcat What would cause a speedo to read high? Apr 21 2016, 09:05 AM
Jeffs9146 Smaller diameter than stock tires. Apr 21 2016, 09:08 AM
tomrev
Smaller diameter than stock tires.
REALLY small... Apr 21 2016, 09:34 AM
matthepcat
Smaller diameter than stock tires.
Duh! Fo... Apr 21 2016, 12:16 PM era vulgaris Wow, that is off by quite a bit. Mine reads about... Apr 21 2016, 10:55 AM 914itis
Wow, that is off by quite a bit. Mine reads abou... Apr 21 2016, 08:54 PM AZ914 That is quite a bit of difference. You can go to ... Apr 21 2016, 01:37 PM toolguy That is a 50% error, You'd have to have someth... Apr 21 2016, 02:01 PM 914Sixer Weight probably came off in the speedometer. Apr 21 2016, 04:06 PM matthepcat They are 15" rims. I believe 195/50/15...mayb... Apr 21 2016, 04:55 PM struckn Mine reads about 10MPH faster then actual speed. I... Apr 21 2016, 08:25 PM PancakePorsche Have Palo Alto or North Hollywood speedometer cali... Apr 21 2016, 09:45 PM |
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