Tyre Pressure ... what's yours?

YGOAMG · 11-03-2009, 08:06 PM

when pumping up ur tyres what tyre pressures do u guys use?

ive also heard of using different pressures on the front than on the back to promote understeer/oversteer ... anyone doing this?

thanks

-Peter

BMW //MPOWER · 11-03-2009, 08:27 PM

Quote:

Originally Posted by YGOAMG

when pumping up ur tyres what tyre pressures do u guys use?

ive also heard of using different pressures on the front than on the back to promote understeer/oversteer ... anyone doing this?

thanks

-Peter

I run 34psi at the front & 36psi at the back.

As an aside i've found that a some complaints about understeer & tramlining are actually due to worn FCAB's.

wilawok · 11-03-2009, 09:45 PM

Quote:

Originally Posted by BMW //MPOWER

As an aside i've found that a some complaints about understeer & tramlining are actually due to worn FCAB's.

Had my FCABs done just before I put on my 19's and find the tramlining to be a pressure related thing........

1q2w3e4r · 11-03-2009, 08:29 PM

I just ran the same all around on the M3 and M Coupe when I had them. I don't reckon you push the car enough on the street to really worry about it too much in a F/RWD setup.

My M3 was corner weighted though.

YGOAMG · 11-03-2009, 08:32 PM

ive got 34 all around..

i might to what uve got Brad..

Beamer_Boi_83 · 11-03-2009, 09:39 PM

220 front / 260 rear for standard load as per the placard inside the driver's door, checked when tyres cold

wilawok · 11-03-2009, 09:42 PM

My tyre Placard reads 260kpa (38psi) Front and 310kpa (44psi) rear.

For the standard staggered 18's

Have found this to be ok for long distance cruising (giving slightly better fuel economy).

But for day to day running I use 36psi front and 38psi rear .

If I run my front at 34psi with the 19's it tramlines....... and the rear at anything over 40psi it skips a bit in bumpy twisty sections....

Hope this helps..........

M3BAS · 11-03-2009, 09:51 PM

I run 38 cold all around on the 19's, doesn't seem too harsh.

Miss325 · 11-03-2009, 10:40 PM

40 PSI all round.

M3_DU · 11-03-2009, 11:55 PM

Quote:

Originally Posted by Miss325

40 PSI all round.

Damn! Why so high?

I run 32psi all around in mine.

Miss325 · 11-04-2009, 01:56 AM

Quote:

Originally Posted by M3_DU

Damn! Why so high?

I run 32psi all around in mine.

Because that is what I was advised to put in them by Continental

sprintman · 11-04-2009, 02:07 AM

40 f, 44 r.

mpower_m3 · 03-22-2010, 05:10 AM

Quote:

Originally Posted by M3_DU

Damn! Why so high?

I run 32psi all around in mine.

lol 40 is too high indeed. i run 32s F 33s R

Ballistic325 · 11-03-2009, 11:37 PM

Like Brad, 34 front, 36 rear. However, I dropped down from 37F / 39R just to try the lower pressure and prefer the feel with the higher pressure, so I will go 36F / 38R. I only have 17s though.

+1 for FCAB change fixes a lot of direction stability issues, and also to Wilawok's comment about tyre pressure playing a part in that.

CortinaD · 11-04-2009, 12:31 AM

32psi cold F and 34psi cold rear.

M3_GTR · 11-04-2009, 12:40 AM

38 all round

YGOAMG · 11-04-2009, 12:41 AM

what are FCAB's?

CortinaD · 11-04-2009, 12:47 AM

Quote:

Originally Posted by YGOAMG

what are FCAB's?

front control arm bushing(s)

YGOAMG · 11-04-2009, 12:49 AM

^^ oh k ye i need mine replaced

BrisM3 · 11-04-2009, 01:01 AM

40 psi all round too.

11-03-2009, 08:29 PM	#4
1q2w3e4r Registered User Join Date: Jan 2006 Location: Sydney, Australia Posts: 1,170 My Ride: Madone, Beetle View My Garage	I just ran the same all around on the M3 and M Coupe when I had them. I don't reckon you push the car enough on the street to really worry about it too much in a F/RWD setup. My M3 was corner weighted though. __________________ \|\| 0-60 3.3\| 60-130 7.1\| 1/4 11.054@ 132.89 \|\| Check out my movies

11-03-2009, 09:39 PM	#6
Beamer_Boi_83 Registered User Join Date: Sep 2009 Location: Australia Posts: 34 My Ride: 2006 E46 320Ci Sport View My Garage	220 front / 260 rear for standard load as per the placard inside the driver's door, checked when tyres cold __________________

11-03-2009, 09:42 PM	#7
wilawok Registered User Join Date: Jan 2005 Location: Sydney,Australia Posts: 1,334 My Ride: MY04 E46 330ci Indiv View My Garage	My tyre Placard reads 260kpa (38psi) Front and 310kpa (44psi) rear. For the standard staggered 18's Have found this to be ok for long distance cruising (giving slightly better fuel economy). But for day to day running I use 36psi front and 38psi rear . If I run my front at 34psi with the 19's it tramlines....... and the rear at anything over 40psi it skips a bit in bumpy twisty sections.... Hope this helps.......... __________________ 6 speed short shift man with Aluminium cube interior, MTech II bodykit 19 inch Hamann reps with Dunlop SP Sport Maxx, Factory TV and Nav, upgraded audio with Alpine, Lanzar and Phoenix Gold Components Individual Colour Tannin Green

11-03-2009, 09:51 PM	#8
M3BAS Registered User Join Date: Aug 2009 Location: Perth, Australia Posts: 200 My Ride: E46 M3 View My Garage	I run 38 cold all around on the 19's, doesn't seem too harsh. __________________ 2005 PY M3

11-03-2009, 10:40 PM	#9
Miss325 Registered User Join Date: Aug 2006 Location: Sydney, Australia Posts: 3,890 My Ride: 05 325CiC Individual View My Garage	40 PSI all round. __________________

11-04-2009, 02:07 AM	#12
sprintman Registered User Join Date: Mar 2008 Location: Canberra, ACT, Australia Posts: 3,410 My Ride: Ex 325CI owner View My Garage	40 f, 44 r.

11-03-2009, 11:37 PM	#14
Ballistic325 Registered User Join Date: May 2009 Location: Sydney Posts: 2,096 My Ride: slow and steady View My Garage	Like Brad, 34 front, 36 rear. However, I dropped down from 37F / 39R just to try the lower pressure and prefer the feel with the higher pressure, so I will go 36F / 38R. I only have 17s though. +1 for FCAB change fixes a lot of direction stability issues, and also to Wilawok's comment about tyre pressure playing a part in that. __________________ I can help with * Reading Codes / Coding your car * R&R FCAs, Tie Rods, Sway links.... * RTABs Need an RTAB tool? Or clutch fan and water pump tools? PM me.

11-04-2009, 12:31 AM	#15
CortinaD Registered User Join Date: Jan 2005 Location: Australia Posts: 9,724 My Ride: subsidised by M3_DU View My Garage	32psi cold F and 34psi cold rear.

11-04-2009, 12:40 AM	#16
M3_GTR Registered User Join Date: Jan 2007 Location: western suburbs Posts: 5,713 My Ride: hates driveways View My Garage	38 all round __________________ FOR SALE!

11-04-2009, 01:01 AM	#20
BrisM3 OEM ///Member Join Date: Dec 2004 Location: Brisbane, Australia Posts: 2,019 My Ride: 1990 E30 318is View My Garage	40 psi all round too. __________________

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