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Author do 16"s affect speedo readings at high speed
corsa12v
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Registered: 6th Sep 02
Location: Port Talbot, South Wales
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1st May 05 at 11:40   View User's Profile U2U Member Reply With Quote
will 16"s affect my top speed coz my 1.6 sport wont seem 2 go n e futher than 110 sure it shud b doin mre than this there supposed 2 do 118 on paper?
Rebrabuk
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Registered: 28th Mar 04
Location: North East
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1st May 05 at 11:46   View User's Profile U2U Member Reply With Quote
Depends on the tyre size as far as i know..
corsa12v
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Registered: 6th Sep 02
Location: Port Talbot, South Wales
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1st May 05 at 11:51   View User's Profile U2U Member Reply With Quote
well on my 12v with 14"s my speedo wud read jus ova 100 and wen i put 16"s on it the speedo wudn budge ova 90?
Rob_Corsa
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Registered: 4th Apr 02
Location: Derbyshire
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1st May 05 at 12:19   View User's Profile U2U Member Reply With Quote
Find out here

http://www.rochfordtyres.co.uk/TyreCalc.asp
marklawton
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Registered: 24th Apr 05
Location: Pensby, Wirral Drives:Golf mk4 GTI
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1st May 05 at 13:28   View User's Profile U2U Member Reply With Quote
when i bought by 1.4 16v sport with the 16 inch alloys it wouldnt got over 109mph but after a week or so trying to get it past 109 it finally got upto 116mph. so you should be able to go faster than that
Mattss Corsa
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Registered: 11th Jan 03
Location: Milton Keynes (BUCKS)
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1st May 05 at 14:49   View User's Profile U2U Member Reply With Quote
does it realy matter, at the end of the day your not ment to be speeding anyway!!

[Edited on 01-05-2005 by Mattss Corsa]
corsa12v
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Registered: 6th Sep 02
Location: Port Talbot, South Wales
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1st May 05 at 14:53   View User's Profile U2U Member Reply With Quote
surely a 1.6 sport shud b doin more than 110?
James R
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Registered: 4th Feb 03
Location: 205GTi16/306GTi16
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1st May 05 at 14:54   View User's Profile U2U Member Reply With Quote
as soon as the car is not in line with factory spec, all figures are out the book.

If you lower the car you'll loose top speed.
If you add bigger wheels (dependign on gearing) you'll loose top speed and acceleration.

so it's anyones guess.
corsa12v
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Registered: 6th Sep 02
Location: Port Talbot, South Wales
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1st May 05 at 14:58   View User's Profile U2U Member Reply With Quote
yeah its been lowered on 16"s. how does lowering a car make it slower?
ed
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Registered: 10th Sep 03
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1st May 05 at 16:58   View User's Profile U2U Member Reply With Quote
Apparently my speedo reads 10% over...I wonder how accurate the speedo is in the first place though... Need to get a Road Angel I think...
ed
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Registered: 10th Sep 03
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1st May 05 at 16:59   View User's Profile U2U Member Reply With Quote
(Oh, thats with 18's too, sorry)
James R
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Registered: 4th Feb 03
Location: 205GTi16/306GTi16
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1st May 05 at 17:04   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by corsa12v
yeah its been lowered on 16"s. how does lowering a car make it slower?


Put simpley the gap between the underisde of the car and the road is reduced.
This gap has fast moving air though the centre and the car body and tarmac cause a drag to the movement. But reducing the gap the restiction increases and increases the drag on the car.
ed
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Registered: 10th Sep 03
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1st May 05 at 17:05   View User's Profile U2U Member Reply With Quote
Put in simple terms... 130mph+ in a Corsa = "We have lift off"....
corsa12v
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Registered: 6th Sep 02
Location: Port Talbot, South Wales
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1st May 05 at 17:06   View User's Profile U2U Member Reply With Quote
so wot cud b stopping my car doin more than 110? 1.4 sports do more than that

[Edited on 01-05-2005 by corsa12v]

[Edited on 01-05-2005 by corsa12v]
Michael B
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Registered: 21st Mar 05
Location: Ireland
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1st May 05 at 17:41   View User's Profile U2U Member Reply With Quote

quote:

Put simpley the gap between the underisde of the car and the road is reduced...


Downforce created by narrowing gaps under a car are supposed to be penalty free, ie loads of downforce with no drag.. though maybe you average corsa couldnt be compared to an F! car.. =P

[Edited on 01-05-2005 by Michael B]

 
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