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Neal
Forum Moderator
Joined: 18 Feb 2004
Posts: 7432
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| Posted:
Fri Jun 25, 2004 8:54 am |
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its occured to me that if the trip comp/fuel economy thing works out the distance travelled by how many times the driveshafts rotate (which i assume it does, it certainly doesnt use GPS  ), then if you put bigger wheels on than the 15s that the car came with, then surely what it works out for your distance travelled will be inaccurate, and so will the mpg and so on.
I know that 17"s with low profile tyres arent that much different in diameter to 15"s with normal tyres but there is stall a small difference, and it would be enough to throw everything out? |
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Chris H
Forum Moderator
Joined: 02 Mar 2004
Posts: 19978
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Fri Jun 25, 2004 9:00 am |
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Neal
Forum Moderator
Joined: 18 Feb 2004
Posts: 7432
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| Posted:
Fri Jun 25, 2004 9:14 am |
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ok then |
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JB
Mr Quoter-vator
Joined: 16 Feb 2004
Posts: 7405
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| Posted:
Fri Jun 25, 2004 10:54 am |
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as for speed....30 will be 31.... |
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Chris H
Forum Moderator
Joined: 02 Mar 2004
Posts: 19978
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| Posted:
Mon Jun 28, 2004 3:36 am |
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the speedo over reads so 30 will probably be around 30 instea dof 28/29 |
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JB
Mr Quoter-vator
Joined: 16 Feb 2004
Posts: 7405
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| Posted:
Mon Jun 28, 2004 3:58 am |
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well use it as a ratio then.... |
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