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BMW 3-Series (E90 E92) Forum > E90/E92/E93 Marketplace (For Sale / Trade / Wanted) > SPONSORS Classifieds/Groupbuys/Specials Area > Suspension & Brakes & Handling Upgrades > || Supreme Power Front Lowering Spring Perch Sale ||



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      03-10-2011, 07:22 PM   #221
johnnySV
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copied from Page 1, Post #10..... does this imply that the one item from Supreme (P/N SUFT015) fits all listed: ??

BMW 1er 09/04- (09/04-) : E87 5 series
BMW 3er IV 02/98- (02/98-) : E46 5 series,Coupe,Cabrio,Touring
BMW 3er IV 06/01- (02/98-) : E46 Compact
BMW 3er V 01/05- (01/05-) : E90 5 series,Touring
BMW Z4 02/03- (02/03-) : Z85 Heckantrieb Roadster,Coupe
BMW Z4 02/03- (02/03-) : Z85 Heckantrieb, Roadster,Coupe
BMW 1er (E87) 09/04- 09/04- (09/04-) : E87 Heckantrieb Limo
BMW 3er IV (E46) 02/98- 02/98- (02/98-) : E46Coupe,Cabrio,Touring
BMW 3 IV (E46) 02/98- 06/01- (02/98-) : E46 Compact
BMW 3 V (E90) 01/05- 01/05- (01/05-) : E90 Touring
BMW Z4 (Z85) 02/03- 02/03- (02/03-) : Z85 Coupe


In other words.... eventhough the OEM part number is different from an e90 to an e46, will these perches fit e46 (and other models listed above?). if so, your market just opened up vastly and I will happily install & cross post to e46fanatics.com

looking FWD to your response,
thanks!
///jSV
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      03-10-2011, 08:02 PM   #222
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johnnySV: Yes 1 part number fits all.......
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      03-10-2011, 08:06 PM   #223
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... then i would like to order a set, and install on my e46 XiT next week w/ Eibach Pro Kit & Bilstein Dampers, and review on e46fanatics.com. I think this Lowering Perch will gain much traction over there (no pun intended) since "reverse rake" is common with lowering e46 Xi's (and I's), and this perch will mitigate that.

who shall I contact @ Supreme ?

Thank you,
///jSV
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      03-10-2011, 11:28 PM   #224
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Any of us can help you or you can order online at this link:http://www.supremepowerparts.com/0/0..._category.html
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      03-11-2011, 08:52 PM   #225
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I'm very interested. But need to know if an alignment is necessary after the installation?
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      03-11-2011, 10:26 PM   #226
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Alignment is not necessary after installation of the lowering spring perches
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      03-12-2011, 08:11 PM   #227
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Quote:
Originally Posted by supremepower View Post
Alignment is not necessary after installation of the lowering spring perches
That's great. What number do I call to place my order?
Do you also have 5mm H&R spacers in stock?
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      03-12-2011, 10:56 PM   #228
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Chico: You can call us at 714 632 1951 and we would be happy to take your order. Perches and spacers in stock
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      03-17-2011, 10:10 PM   #229
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Are these compatible with the BMW Performance Suspension (33 50 0 444 832)?
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      03-17-2011, 10:19 PM   #230
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tag824: Indeed they are
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      03-18-2011, 12:05 PM   #231
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I agree with this statement 100%. The strut rod attaches at the same point relative to the body even with the lower caps. The caps only act to raise the top mounting position of the spring thus bringing the car, and with it, the top of the strut shaft closer to the ground. Without lowering the bottom mount on the strut, your struts will be compressed more than without the caps. This decreases your suspension travel, increases chance of bottoming out and frequency of engaging secondary springs/foam bump stops, and makes the strut work in a different range than it was desigend to work. Further, it will also lower the car's roll center (bad) and thus requires stronger springs than factory-spec to offset the new tendency to roll over more. Therefore, the car will be more inclined to lean in turns but also will more quickly engage the bumpstops. This may lead to sloppy transitioning and mid-corner bumps upsetting the car relative to a properly lowered suspension.


Quote:
Originally Posted by boostd92 View Post
Uh .... Correct me here but that response concerns me. If you are lowering the body you are absolutely limiting travel of the shock (unless you are simultaneously lowering the lower shock mount as well).

If the spindle isn't moving and the body is, shock travel is decreased. If it's an upper spring perch moving the spring upwards, the shock nut is still secured to the upper shock mount that secures to the shock tower that is fixed. Because the shock rod is secured to the upper mount, If the body comes down, it's pushing the shock rod into the shock body by the same distance the car is lowered (0.5").

So aren't you in effect losing 0.5" of shock rod travel? Concerned on less stiff springs that you may be on the bump stops more often.
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      03-19-2011, 04:01 PM   #232
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I just installed these combined with my H&R Touring Cup Kit, it lowered my front down about .5" as advertised and I love it. Will get pics up soon. Thanks to Eric for some quick shipping! Install time took about an hour.
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      03-19-2011, 07:53 PM   #233
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are these compatible on e90 lci's?
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      03-21-2011, 01:03 AM   #234
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mrj25: Yes they are compatible

ebisu8: You are very welcome!
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      03-23-2011, 07:36 PM   #235
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When are you gonna have sets made for xi's? If ever.
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      03-24-2011, 08:27 PM   #236
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sorry if this has been asked but do these work on the e46 m3?
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      03-24-2011, 08:50 PM   #237
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No they do not work on the E46 M3. Regular E46 yes but not the M3
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      03-26-2011, 11:20 AM   #238
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Thumbs up

I put these on last weekend, and I'm very happy. I did have to call to verify install information -- simple written instructions would have negated that. Other than that, installed easy, quality construction.

I have an early build E90, which had a sport pkg front strut mount that was soon revised. I put the old BMW performance suspension on, with heavier rear sway, keeping my sport pkg springs, and the revised front strut mounts (1/2" taller, surprise!) However, my former rack was gone, and the front fender-wheel gap looked bigger than the back.

Well, that wasn't going to work. So, after some research, I picked up these perches and out it came, again. Now the look to the car is back to what is was before, and with the new suspension, drives like a dream. More controlled, more feedback, absorbs bumps well, but quick rebound. And much less understeer. The new perches integrated perfectly.

I had an alignment done (because of all the other suspension work), but all front values could be adjusted to exactly mid-range.

From my experience:

Quote:
The [perches] only act to raise the top mounting position of the spring thus bringing the car, and with it, the top of the strut shaft closer to the ground. Without lowering the bottom mount on the strut, your struts will be compressed more than without the caps. This decreases your suspension travel, increases chance of bottoming out and frequency of engaging secondary springs/foam bump stops, and makes the strut work in a different range than it was designed to work.
True. Struts are now compressed by 1/2", and you're 1/2" closer to bump stops. Which may be an issue with a completely stock suspension or if you have short springs. In my case, the performance suspension is designed to work with sport pkg or lowered performance springs, so I'm still within the strut's designed operation range, as are most aftermarket struts depending on what springs you are using.

Performance pkg comes with shorter bump stops for lowering springs, I used those. Anyone installing lowering springs, or in this case a lowering perch, should consider shorter bump stops based on the drop, there are several avail: Z3M, E90 M3, and presumably the one on mine. Inexpensive part of tuning your suspension.

http://www.e90post.com/forums/showth...ght=bump+stops

Install tip: I put blue painters tape on the fender edge (protect the paint from the duct tape), and duct tape over that. The bolt studs from the strut mount will mark your paint if they contact.

I replaced the top nut on the strut, it is a lock nut with a metal collar, one time use only, and the stabilizer link to strut nut, since those are under constant movement. Cost, just a few dollars from dealer, piece of mind = priceless. Blue loctite on nuts to strut mount.

Last edited by AlanAZ; 03-26-2011 at 11:27 AM.
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      03-27-2011, 06:44 PM   #239
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Thanks for the great feedback AlanAZ!
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      03-27-2011, 11:46 PM   #240
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Quote:
Originally Posted by AlanAZ View Post
Performance pkg comes with shorter bump stops for lowering springs, I used those. Anyone installing lowering springs, or in this case a lowering perch, should consider shorter bump stops based on the drop, there are several avail: Z3M, E90 M3, and presumably the one on mine. Inexpensive part of tuning your suspension.

http://www.e90post.com/forums/showth...ght=bump+stops
Aren't you worried by using the shorter bumps stops they will compress more than the stock e9x bumps stops? My concern is that your tire/wheel can then travel up higher in the wheel well under full compression and rub or even crack a fender.
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      03-29-2011, 10:07 AM   #241
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Quote:
Aren't you worried by using the shorter bumps stops they will compress more than the stock e9x bumps stops?
Why would a shorter bump stop compress more than the stock size? Shorter bump stops provide firmer but progressive stopping than the stock length. They're designed for use with shorter springs, or in my case, a lowering perch, and keep travel within the design specs.

Last edited by AlanAZ; 03-29-2011 at 10:13 AM.
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      03-29-2011, 10:24 AM   #242
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Quote:
Originally Posted by AlanAZ View Post
Why would a shorter bump stop compress more than the stock size? Shorter bump stops provide firmer but progressive stopping than the stock length. They're designed for use with shorter springs, or in my case, a lowering perch, and keep travel within the design specs.
It looks like a lot of people are using the bump stop from an e36 M3 which is about 1/2 inch shorter and looks to be wider. If the compressed size of that bump stop is shorter than the stock bump stop wouldn't that let the suspension travel that much more up into the wheel well?
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