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george
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Posted: 03 May 2005 at 19:50 | IP Logged Quote george

can anyone tell me what the tyre pressures on a 214/45/17 wheel should be please.

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Antti
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Posted: 03 May 2005 at 19:56 | IP Logged Quote Antti

I use 2.7 bar (=39psi)

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David C
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Posted: 03 May 2005 at 19:56 | IP Logged Quote David C

The normal pressures for 205/55R16 are 2.2bar F&R or 2.5bar F&R at full load.
In theory the 215/45R17 need higher pressures because of their lower load index: 2.6bar F&R to 2.9bar F&R fully loaded.

ALWAYS set the pressures when the tyres are cold.

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da tony b
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Posted: 03 May 2005 at 19:57 | IP Logged Quote da tony b

we all differ george..i tried the higher recomended pressure.....and it was very 'skippy' and twitchy

i know run approx 32 psi cold in my 45'/17's

also to note the ride was very harsh...i have dont about 4-5k miles on them with even wear across the tyres

alfa recomended presures are more like 40 psi ..which i found a lot worse all round

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David C
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Posted: 03 May 2005 at 20:10 | IP Logged Quote David C

da tony b wrote:
I now run approx 32 psi cold in my 45'/17's
Is that with 215/45 or 225/45 ?

225/45R17 are fine at 2.2bar/32psi

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george
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Posted: 03 May 2005 at 20:20 | IP Logged Quote george

215/45/17s are fitted

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da tony b
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Posted: 03 May 2005 at 20:43 | IP Logged Quote da tony b

David C wrote:
da tony b wrote:
I now run approx 32 psi cold in my 45'/17's
Is that with 215/45 or 225/45 ?

225/45R17 are fine at 2.2bar/32psi


dave ive run same pressure with the old 215 ...but now is on 225..to be jhonest..at castle combe .in the wet morning it was much much better at approx 30 psi

but it was with 215's that i first needed to drop the pressure to give safer/better handling on our roads....the higher pressure caused it to skip like hell

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Chris T
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Posted: 03 May 2005 at 21:21 | IP Logged Quote Chris T

Got to agree with DaTonyB on this one, it seems down to personal preference.

I normally run 32 psi front and rear. Tried upping it to 35 psi and the car was extremely twitchy and grabbed any slightest imperfection in the road which on UK roads is all the time. So it's back to 32 again!

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MPH1
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Posted: 04 May 2005 at 11:10 | IP Logged Quote MPH1

I run mine at 38psi, the steering is much more direct and responsive. Less tyre roll too. My tracking is set at 0 (parallel) though so maybe this suits the higher pressure better.

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AR156
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Posted: 04 May 2005 at 11:23 | IP Logged Quote AR156

36~37psi for my BS G3, anything less than that the tyres dont perform.
A bit bumpy tho!
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