[Richwm]

What tire pressure are you guys running with the front M3 parts?

[hl0m4n]

stupid question i know on the 335i there is a strut bar no? it looks like the m3 one you have that goes behind the cabin filter.

is the only difference thickness, bolts, etc for better?

[stressdoc]

Originally Posted by hl0m4n

is the only difference thickness, bolts, etc for better?

Yes, but that is a significant difference, especially the 3-bolt attachment.

[HP Autosport]

Originally Posted by Richwm

What tire pressure are you guys running with the front M3 parts?

Tire pressures shouldn't change because you have different control arm links.

[Richwm]

Originally Posted by HP Autowerks

Tire pressures shouldn't change because you have different control arm links.

After the dealer did my alignment they said that I should run my front tires at 38 Psi for better tire wear due to the negative camber but they also said that my car was lowered and its not. So I am questioning there knowledge on this matter. What is the recommended tire pressure on the M3? I have run my front tires at 34, 36 and 38 Psi and its still tram lining on the freeway and it didn’t before. I still have the same tires as before and I use to run them at 36Psi front and 42Psi rear. My turn-in, under steer and high G turning are much improved but the tram lining is kinda annoying.

[HP Autosport]

Originally Posted by Richwm

After the dealer did my alignment they said that I should run my front tires at 38 Psi for better tire wear due to the negative camber but they also said that my car was lowered and its not. So I am questioning there knowledge on this matter. What is the recommended tire pressure on the M3? I have run my front tires at 34, 36 and 38 Psi and its still tram lining on the freeway and it didn’t before. I still have the same tires as before and I use to run them at 36Psi front and 42Psi rear. My turn-in, under steer and high G turning are much improved but the tram lining is kinda annoying.

A few things can cause tramlining, just to name a few...

Tires
Wide Wheels or altered offset
Excessive camber
Toe or the lack of
Suspension bushings
etc.

And on the 135/335

Front tension rods
Front lower wishbones

Rear guide rods
Rear upper links
and rear subframe bushings(have you seen/felt how soft the stock subframe bushings are?)

All of the above can contribute to tramlining.

[Hunter399]

When I get the car aligned, do i tell them do align it as a 335 or an m3?

I assume 335, just want to make sure.

[wadgras44]

Originally Posted by hunter399

When I get the car aligned, do i tell them do align it as a 335 or an m3?

I assume 335, just want to make sure.

I did 335i and alignment feels great

[stressdoc]

Here is a list of the M3 suspension parts (not including front strut brace) that are of current interest from the Crown website (Tischer & HPAutowerkes have them in convenient packages):

Rear suspension:

Description Qty Your Price Core Price Total Cost
Mechanical Catalog - 2008 - BMW - M3 33322283545 wishbone
Rear suspension, Upper control arm, Rear arm, Rear arm, m series, left $116.55
Mechanical Catalog - 2008 - BMW - M3 33322283546 wishbone
Rear suspension, Upper control arm, Rear arm, Rear arm, m series, right $116.55
Mechanical Catalog - 2008 - BMW - M3 33322283547 guide rod
Rear suspension, Upper control arm, Front arm, Front arm, m series, left $182.75
Mechanical Catalog - 2008 - BMW - M3 33322283548 guide rod
Rear suspension, Upper control arm, Front arm, Front arm, m series, right $182.75
Mechanical Catalog - 2008 - BMW - M3 33312283382
Rear suspension, Bushings, Bushings, m series, outer, front $55.99 x2 111.98
Mechanical Catalog - 2008 - BMW - M3 33312283383
Rear suspension, Bushings, Bushings, m series, outer, rear $55.99 x2 111.98

Front suspension:

Mechanical Catalog - 2008 - BMW - M3 Part Number: 31102283576 tension strut
Front suspension, Lower control arm, Front arm, Front arm, m series, right - 2wd - 2WD $116.60
Mechanical Catalog - 2008 - BMW - M3 Part Number: 31102283575 tension strut
Front suspension, Lower control arm, Front arm, Front arm, m series, left - 2wd - 2WD $116.60
Mechanical Catalog - 2008 - BMW - M3 Part Number: 31102283578 control arm
Front suspension, Lower control arm, Rear arm, Rear arm, m series, right - 2wd - 2WD $81.54
Mechanical Catalog - 2008 - BMW - M3 Part Number: 31102283577 control arm
Front suspension, Lower control arm, Rear arm, Rear arm, m series, left - 2wd - 2WD $81.54

Total: $1,218.84

[Gen_E92]

Originally Posted by wadgras44

I did 335i and alignment feels great

so it's -0.5 or -0.6 like before? or is it around -1.3 now?

[wadgras44]

Originally Posted by stressdoc

Here is a list of the M3 suspension parts (not including front strut brace) that are of current interest from the Crown website (Tischer & HPAutowerkes have them in convenient packages):

Rear suspension:

Description Qty Your Price Core Price Total Cost
Mechanical Catalog - 2008 - BMW - M3 33322283545 wishbone
Rear suspension, Upper control arm, Rear arm, Rear arm, m series, left $116.55
Mechanical Catalog - 2008 - BMW - M3 33322283546 wishbone
Rear suspension, Upper control arm, Rear arm, Rear arm, m series, right $116.55
Mechanical Catalog - 2008 - BMW - M3 33322283547 guide rod
Rear suspension, Upper control arm, Front arm, Front arm, m series, left $182.75
Mechanical Catalog - 2008 - BMW - M3 33322283548 guide rod
Rear suspension, Upper control arm, Front arm, Front arm, m series, right $182.75
Mechanical Catalog - 2008 - BMW - M3 33312283382
Rear suspension, Bushings, Bushings, m series, outer, front $55.99 x2 111.98
Mechanical Catalog - 2008 - BMW - M3 33312283383
Rear suspension, Bushings, Bushings, m series, outer, rear $55.99 x2 111.98

Front suspension:

Mechanical Catalog - 2008 - BMW - M3 Part Number: 31102283576 tension strut
Front suspension, Lower control arm, Front arm, Front arm, m series, right - 2wd - 2WD $116.60
Mechanical Catalog - 2008 - BMW - M3 Part Number: 31102283575 tension strut
Front suspension, Lower control arm, Front arm, Front arm, m series, left - 2wd - 2WD $116.60
Mechanical Catalog - 2008 - BMW - M3 Part Number: 31102283578 control arm
Front suspension, Lower control arm, Rear arm, Rear arm, m series, right - 2wd - 2WD $81.54
Mechanical Catalog - 2008 - BMW - M3 Part Number: 31102283577 control arm
Front suspension, Lower control arm, Rear arm, Rear arm, m series, left - 2wd - 2WD $81.54

Total: $1,218.84

Nice work, Doc. For the sake of completeness, I wanted to note that - for the front suspension - you'll also need the regulating rod (M3 Part Number: 37142283867 - approx $15) if you have xenons.

[stressdoc]

As near as I can tell, Harold and Orb and Craig did all the work.
Thanks for adding the xenon adaptive lights link!

[kenneth]

Originally Posted by stressdoc

As near as I can tell, Harold and Orb and Craig did all the work.
Thanks for adding the xenon adaptive lights link!

What does the regulating rod do for those who have xenons?

Thanks

[LaYzEe]

Originally Posted by stressdoc

Here is a list of the M3 suspension parts (not including front strut brace) that are of current interest from the Crown website (Tischer & HPAutowerkes have them in convenient packages):

is this for both e90s and e92s?

[Mr. 5]

Originally Posted by kenneth

What does the regulating rod do for those who have xenons?

Thanks

The attachment for the regulating rod is different on the M3 than the 335.
The 335 uses a clip but the M3 uses a bolt.
There's no way of getting around it. If you have Xenons and get these links then you will need the rod so your Xenons will point in the right direction and not blind other drivers.

Originally Posted by LaYzEe

is this for both e90s and e92s?

Yes.

[kenneth]

Originally Posted by Mr. 5

The attachment for the regulating rod is different on the M3 than the 335.
The 335 uses a clip but the M3 uses a bolt.
There's no way of getting around it. If you have Xenons and get these links then you will need the rod so your Xenons will point in the right direction and not blind other drivers.



Yes.

Thank you Mr. 5! I wasn't aware the Xenons were somehow linked with the parts being swapped.

[tomtom]

the M3 wishbones add -.75 camber. How much does the stock camber max out at?

[kenneth]

Originally Posted by tomtom

the M3 wishbones add -.75 camber. How much does the stock camber max out at?

Front Camber OEM range for Sport Suspension is -0.22 to -0.88. I haven't swapped the M3 parts, so I have mine set at -0.90.

[E92Fan]

Question - in replacing the rear wishbones and control arms with M3 items, is there any difference in camber, as there is on the front when going to the M3 items? Do I need another alignment setup post install?

[stressdoc]

PM Harold or Orb and let us know what they say. Speculating here, by looking at the parts I don't think so, they seem to be the same length & shape, and the install is pretty easy. I have ordered these parts and will chime in when I have something useful to contribute.

[Mooreski]

I looked around in the realoem headlight section last night and couldn't find the regulating rod.... can anyone point to where it is?

[stressdoc]

BMW - #37142283867 - M3 Headlight Adjustment Rod - $14.57