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-   -   Tyre Pressure ... what's yours? (http://forum.e46fanatics.com/showthread.php?t=717800)

YGOAMG 11-03-2009 08:06 PM

Tyre Pressure ... what's yours?
 
:hi:

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 (Post 10854745)
:hi:

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.

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.:read: 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 .:4ngie:

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....:yikes:

Hope this helps..........:hi:

wilawok 11-03-2009 09:45 PM

Quote:

Originally Posted by BMW //MPOWER (Post 10854853)
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........;)

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.

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.

M3_DU 11-03-2009 11:55 PM

Quote:

Originally Posted by Miss325 (Post 10855507)
40 PSI all round.

Damn! Why so high?

I run 32psi all around in mine.

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 (Post 10856031)
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.

M3_Aaron 11-04-2009 01:10 AM

38psi

Miss325 11-04-2009 01:56 AM

Quote:

Originally Posted by M3_DU (Post 10855863)
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.


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