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Old 03-22-2010, 09:56 PM   #41
Gee Emm
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Location: Outer Eastern Melbourne, Australia
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My Ride: 2000 325Ci Auto :(
I run 36psi all 'round on my 18's
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Old 03-23-2010, 08:56 AM   #42
JohnMate
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running the diff through the back seat and 0 in the left rear.... I miss my car
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Old 11-13-2012, 07:41 AM   #43
wc325i
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reviving thread....

What tyre pressure should i run on oem 18" m3 wheels?
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Old 11-14-2012, 12:31 AM   #44
forzamilan10
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My Ride: '04 325Ci Sport
I usually run 40 all around on 19" cheap nasty ATR Sport tyres...
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Old 11-14-2012, 12:53 AM   #45
steve.k
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^same!... Twins!
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Old 11-14-2012, 12:30 PM   #46
johnca
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38 all round for me..
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Old 11-14-2012, 03:26 PM   #47
Brissyjohn
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My Ride: 2003 325ti
What the tyre placard shows. 220 kpa front 260 kpa rear or 260 kpa front and 310 kpa rear depending on load and conditions. I mostly use the high pressures
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Old 11-14-2012, 06:00 PM   #48
N4NOOK
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48f/46r
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Old 11-14-2012, 06:04 PM   #49
Hazey82
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place card says 33f 35r I run 36 all round
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Old 11-14-2012, 06:12 PM   #50
zabalzae
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36 all around
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Old 11-14-2012, 06:41 PM   #51
Chewy
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40 all round
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Old 11-14-2012, 07:50 PM   #52
Worx
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I run 8PSI most of them time.
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Old 11-14-2012, 08:14 PM   #53
DamoBMW
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My Ride: '02 325Ci M-Sport
260kpa front, 305kpa rear (psi is about 38 and 44)

It's between minimum and maximum on the placard for my tyres.
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Old 11-14-2012, 08:15 PM   #54
Bemwe_03i
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My Ride: 2003.5 E46 M3 smg IR
35rr 33 fr on 18s
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Old 11-14-2012, 11:47 PM   #55
trive2
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My Ride: 1989 BMW 535i
38 front, 42 rear.


Car understeers so I like the extra bite in the front, plus its good for fuel economy.
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Old 11-15-2012, 12:08 AM   #56
steve.k
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All up 160Psi
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Old 11-15-2012, 02:01 AM   #57
Mitch E46
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Usually 38 Psi all round on 19x8.5 square set up. Although I've been trying out 40 Psi all round and I'm liking it.
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Old 11-15-2012, 02:36 AM   #58
peytonracer4
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Quote:
Originally Posted by YGOAMG View Post
TAAXED - i was under the impression that less pressure = more grip..
It's all a balancing act. You want the tires to have enough air to always have the contact patch on the pavement. Anything less than 40 psi cold in my car will cause the tires to roll slightly.
Too much is a bad thing and too little is a bad thing. This goes with tire pressure, suspension softness, alignment, etc... It's all a crazy balancing act

Keep in mind this stuff really isn't relevant in street driving
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Old 11-15-2012, 03:20 AM   #59
DamoBMW
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^ What air pressures do you use in your watermelons?
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Old 11-15-2012, 04:44 AM   #60
mkodama
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Quote:
Originally Posted by YGOAMG View Post
TAAXED - i was under the impression that less pressure = more grip..
On a mountain bike or rock crawling truck, yes. Not the case with an E46. Less pressure does guarantee more rolling resistance though.
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