skibikejohn
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| posted on 21/5/10 at 10:42 PM |
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Tyre Pressure
I am running 205/40 x 17 wheels and am wondering what tyre pressure others are using for the road.
[Edited on 21/5/10 by skibikejohn]
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Daddylonglegs
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| posted on 21/5/10 at 11:45 PM |
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I think you mean Tyre pressure?  
Sorry, couldn't resist it 
It looks like the Midget is winning at the moment......
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Madinventions
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| posted on 22/5/10 at 12:41 AM |
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I know they're not the same but I've got 205/55/R15s, ~600kg weight with driver, and my tyres are around 16psi.
It's pretty simple to roughly work out a good starting point: Total weight(lbs) / 4 / tyre contact patch (square inches). So mine is ~600kg =
1320lbs. 1320/4 = 330lbs/corner (assuming 50/50 weight distribution!)
I parked my tyres on a clean sheet of A4 and measured the approximate contact patch - around 5" x 4". 330lbs/20sqin = 16.5psi.
Or.... start with around 15-18psi and adjust to suit your car and your driving
Ed.
Mojo build diary: http://www.madinventions.co.uk
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Paul TigerB6
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| posted on 22/5/10 at 01:21 AM |
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205/40/17 - depending on tyre sidewall stiffness - try 17psi +/- 2psi
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skibikejohn
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| posted on 22/5/10 at 01:35 AM |
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Thanks for the help.
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Daddylonglegs
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| posted on 22/5/10 at 02:37 AM |
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Sorry mate, didn't mean to correct you. We Brits are always doing it,
You say Tire, we say Tyre lol! Hope I didn't offend
It looks like the Midget is winning at the moment......
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skibikejohn
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| posted on 22/5/10 at 01:41 PM |
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Daddylonglegs
Not a problem. I'm an Aussie living in Canada so, although I may spell badly, I am used to taking the mikey. But we can still beat you in
cricket
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Scott W
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| posted on 22/5/10 at 04:04 PM |
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quote:
Originally posted by skibikejohn
But we can still beat you in cricket
Apart from in the recent World Twenty20! 
[Edited on 22/5/10 by Scott W]
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