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Speedometer calibration accurate in 996?

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YOUR RESEARCHSpeedometer calibration accurate in 996?

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Set rush hour and there's no one

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Suggestion

This morning was a perfect day since the trafic lights are set for rush hour and there's no one on the HwY due to the holiday.

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Speedometer calibration accurate in 996?
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Leading evidence: 'Set rush hour and there's no one' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Set rush hour and there's no one' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Set rush hour and there's no one

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This morning was a perfect day since the trafic lights are set for rush hour and there's no one on the HwY due to the holiday.

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Speedometer calibration accurate in 996?
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18 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

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POST 1 / ORIGINAL POSTEROriginal post

Having been in Boxsters for 7 years, I noted that the speedometer always read 4-5% high (readout was 60 mph, actual speed was 57 mph). This was (effectively) standard on all Boxsters. New to the 996, should I expect the speedometer to be accurate or is it also 5% off? TIA.

POST 2Original post

Mine is about 1.5mph or less off from my portable GPS up to 173mph, which is the more accurate I don't know.

POST 3Original post

Mine reads about 4mph high at all speeds, as did my Boxster.

POST 4Original post

Mine is about 1.5mph or less off from my portable GPS up to 173mph, which is the more accurate I don't know Where did you take the car up to 173mph... I gotta go to that heavenly place!

POST 5Original post

A nice 3 lane HWY in MD some call it a Sportbiker's heaven. This morning was a perfect day since the trafic lights are set for rush hour and there's no one on the HwY due to the holiday.

POST 6Original post

'99 C2 w/ factory 18" wheels and tire sizes reads almost exactly 4mph high at all speeds too.

POST 10Original post

My 99 996 reads 5-6mph high according to my GPS after I put 285/30 tires on the back.

POST 11Original post

I got a radar reading of 119mph when my speedo said 123mph.

POST 12Original post

Did a ticket accompany the radar reading.......???

POST 13Original post

I consistently get +5mph at any speeds I've checked.

POST 14Original post

No, only a certificate from the Silver State Classic

POST 15Original post

My speedo is 4mph fast at all speeds above 20mph. That Silver State Classic looks like it is a great event. May have to get this on my calendar.

POST 17Original post

having one of those parked radar trailers that the police leave on my way to work today it showed me going 57 but the car showed 62

POST 18Original post

Seriously, come and join us! There's a few rennlist folks involved, and the atmosphere is great. Also, while you're looking at the www.sscc.us webpage, don't forget to scroll down to the photo of the exceptionally handsome young Brit standing by his 996, and the remarkable piece of journalistic genius that immediately follows it

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