Jamie
Member
Registered: 1st Apr 02
Location: Aberdeen
User status: Offline
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the speedo out 
On way home from Crail yesterday sitting at about 80 and went past a hidden Traffic T5 
BUT, isnt it 70 + 10% + 2 = 79 being the small allowance they allow or something?
Also there was a car in front of me, Fiat Marea, and it was pulling away from me just before/after 
Cheers 
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Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
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Depends on your tyres and radius of the original rim. It shouldnt be much, certainly not enough to make your speedo over-read past the manufacturers in-built inaccuracy.
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ed
Member
Registered: 10th Sep 03
User status: Offline
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You can get it corrected by a garage though, so that your speedo will show the correct speed 
[Edited on 03-05-2004 by 1800ed]
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Jamie
Member
Registered: 1st Apr 02
Location: Aberdeen
User status: Offline
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tyres are 205/40/17
Just curious what they would have had me at, IF they were actually pointing at me and not the Fiat infront.
Guess its 2-3 months to find out
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nickyboy01
Member
Registered: 10th Sep 03
Location: Oxford-ish
User status: Offline
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17's will put it out by 2-3mph
Were you on a M'way/Duel Carraigeway? if so then i doubt they'd even give you a 2nd glance.
And as for the allowences, there's no official allowance it all depends onthe officers discretion
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Jamie
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Registered: 1st Apr 02
Location: Aberdeen
User status: Offline
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Yeah i knew the "allowance" was a rough guide.
Was a Motorway from Dundee - Aberdeen.
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StuartVRS
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Registered: 9th Feb 03
Location: Bromley Common, Greater London
User status: Offline
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quote:
Originally posted by nickyboy01
17's will put it out by 2-3mph
Were you on a M'way/Duel Carraigeway? if so then i doubt they'd even give you a 2nd glance.
And as for the allowences, there's no official allowance it all depends onthe officers discretion
i doubt this, my 19" on the audi only put it out by .9 mph. Cant see how you can quote that figure without knowing the original wheel/tyre size and new ones.
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dousey
Member
Registered: 21st May 03
Location: Selsey, West Sussex
User status: Offline
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Here ya go mate http://www.paspeedo.com/calculator.htm
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Jamie
Member
Registered: 1st Apr 02
Location: Aberdeen
User status: Offline
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Cheers mate.
Basically says +2 from 70mph - 90mph then after 100 its +3
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sxi boy
Member
Registered: 11th Apr 02
Location: north east Drives: clio 182
User status: Offline
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theres a few speed camera's nr me that show u ur actual speed, i went past doing 30 on the clock and the camera said i was doing 26
ive got 205/40/17's on and the speedo is calibrated for 195/50/15s i think
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John_C
Member
Registered: 5th Mar 03
Location: South east, Bromley
User status: Offline
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mine don't make my speedo out. well difference is not noticable
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