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The Tire Rack's Tire & Wheel Forum
Use this forum to discuss anything in relation to wheels to tires to offsets.
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Old 04-17-2002, 06:53 PM   #1
Derek330xi
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tire pressure for 18" tires

what psi do u guys run on your 18" 235/40/18? i have no idea why but i couldn't find the recommended psi on the tire.
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Old 04-17-2002, 06:55 PM   #2
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I ran between 33 and 35 all around
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Old 04-17-2002, 06:56 PM   #3
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Quote:
Originally posted by Clem
I ran between 33 and 35 all around
but aren't the rear tires suppose to have more psi? for the 17" the sticker with the psi for 17" on my car always had the rear 3 psi more than the front.
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Old 04-17-2002, 07:18 PM   #4
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That setup I believe creates more understeer. That's why BMW set it up that way.
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Old 04-17-2002, 07:44 PM   #5
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Quote:
Originally posted by Clem
That setup I believe creates more understeer. That's why BMW set it up that way.
is that a good thing or bad thing? so u mean is better to have same psi all around? thanks
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Old 04-17-2002, 08:11 PM   #6
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I have 225/40/18 all around and

Use 35/front and 37/rear.
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Old 04-17-2002, 11:34 PM   #7
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i have 225/40/18's and have been running 40 psi all around...probably too high then?????
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Old 04-18-2002, 12:17 AM   #8
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I did a search on the old forum archives and found that most people running the same as miine. In addition, look onthe side of your driver side door. It'll tell you what the manufacture recommends...

I think it is a bit high, especially b/c the weather is warmer now too.
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Old 04-18-2002, 12:52 AM   #9
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that's what's so great about this forum...quick feedback! Thanks!
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Old 04-18-2002, 03:08 AM   #10
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that's what's so great about this forum...quick feedback! Thanks!
No problem dude. But you won't always get a quick response.
I'd recommend checking older archives 1st. There is alot of good info that has already been discussed.
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