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Old 03-30-2003, 02:42   #1 (permalink)
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What do You Keep your Tire Pressures At?

Hey All,

What pressure do you keep your tires at?

I usually keep mine at about 30PSI

how bout all you other guys?
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Old 03-30-2003, 02:43   #2 (permalink)
 
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i keep mine at the factory specified PSI
which is roughly 32 or 34 PSI
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Old 03-30-2003, 02:45   #3 (permalink)
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Old 03-30-2003, 02:59   #4 (permalink)
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I keep my 235/40/R17s at 38psi.

When I bought my car new it tended to pull to the left. Checked the pressures and they were at 30psi which is what Ford recommend.

When I put them up to 38, I've never had a problem. The tyres are wearing better than expected and the car feels better to drive.
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Old 03-30-2003, 04:57   #5 (permalink)
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38psi front,40psi rear stops sidewall flex which minimises wear
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Old 03-30-2003, 05:15   #6 (permalink)
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Agree with Jamie and taximan - I keep mine at 39 all round, and 41 at the back when I hook the boat up. But I'm running 235/45/17s and you need at least 36 in the front to stop tramlining and uneven wear. When I had 16s on my Berlina (I know it's the opposition), I ran 34 all round.
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Old 03-30-2003, 05:46   #7 (permalink)
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245/35/19's on my BA XR8...

32psi in the dry (otherwise the car slides when pushed... not enough slack... i used to have them at 40 but at 32, its like duck tape on the road!)

38psi in the wet. (better water channeling with higher pressure in the wet)
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Old 03-30-2003, 10:37   #8 (permalink)
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I like higher inflation to minimise rolling resistance, but I never considered anything as high as 38-40 psi.

This is interesting. You all know of the diagrams that show the wear patterns on an under-inlfated tyre and an over-inflated one, just how over-inflated has a tyre to be to show centre-line wear?

The recommended pressure for the NF V8 (normal load) is 26/26 psi. (15"). The size of the tyre wouldn't influence the pressure they can hold, would it? - as long as it was withing the rating on the tyre.

Anyone got any opinions?
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Old 03-30-2003, 14:19   #9 (permalink)
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I run mine at 38psi also. I keep all 4 ad the same pressure. Keep in mind, over inflating your tyres cause them to wear prematurely in the centre of the tire, it is better to keep the tyre pressure lower during the winter.
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Old 03-30-2003, 21:09   #10 (permalink)
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I run 36psi all round on 215/15's. Tried 38 but the ride becomes to harsh, anything much less than 36 and I can tell the difference handling wise.

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