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Suspension & Braking Forum by BimmerWorld
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Old 01-26-2009, 03:52 PM   #1
boostd92
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Why are there two different spring #'s for E46 H&R Race?

I'm curious... why are there two models of H&R Race springs for the same E46 chassis?

I get that one is for sport package and one is for basic, but why would it matter?

Don't they both drop the car to the same level? Do they just try to match the spring rates to the kind of shocks they think are in the car?

If that's true, does that mean that the non-sport package race springs have a softer spring rate than the sport package race springs?

I'm looking to drop my 330i ZHP to eliminate fender gap, but I'd like to retain the best ride I can. I'm not interested in coilovers. Does anyone know if H&R's 29484 part number has a softer rate than the 50484.88's?

Thanks!
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Old 01-29-2009, 09:09 AM   #2
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No one, huh?

The more I think about it, the less sense it makes. If every retailer out there says NOT to use factory shocks with the Race springs, then it wouldn't make ANY difference if you had a sport package car or not because H&R wouldn't be tuning the spring rates to the factory shocks anyhow.

So why are there two different sets of springs?
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Old 01-29-2009, 09:13 AM   #3
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One set is for the stock suspension, the other for the sport suspension. You will have to tell the dealer what kind you have on your car. If you don't know, check your BMW dealer, they will be able to tell you through the VIN.
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Old 01-29-2009, 09:36 AM   #4
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I understand that, that's basic.

The question is, since the only significant difference in a stock/performance package car are the springs and shocks, which anyone using the RACE springs would replace, why do you need to different race springs?

It can't be for the measily difference in swaybar thickness... that'd be ridiculous.
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Old 01-29-2009, 09:51 AM   #5
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Quote:
Originally Posted by boostd92 View Post
I understand that, that's basic.

The question is, since the only significant difference in a stock/performance package car are the springs and shocks, which anyone using the RACE springs would replace, why do you need to different race springs?

It can't be for the measily difference in swaybar thickness... that'd be ridiculous.
Dampers. I presume the difference is the dampers BMW uses between the stock and the sport suspension, and therefor H&R use different springs. Rebound rates etc... The only way I can explain this to myself.
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Old 01-29-2009, 10:19 AM   #6
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Argh.. is anyone reading the actual post?

All the retailers and every enthusiast forum says that the H&R Race springs *SHOULD NOT* be used with OEM dampers. If this is H&R's recomendation, why would they make different Race springs based on OEM dampeners that you're NOT supposed to use with their springs? That doesn't make any sense.

It seems to only make sense if H&R designed the different RACE springs to be used *WITH* oem dampeners, which goes against what everyone posts, and advertizes.

I'm confused.
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Old 01-29-2009, 11:08 AM   #7
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No clue. YOu asked about the springs only. I wouldn't just get the springs alone anyways, I have the cup kit. Just trying to answer your post
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Old 01-29-2009, 11:39 AM   #8
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Okay. It was bugging me too much so I called H&R (who, by the way was VERY helpful, quick and polite!).

First they told me that the only reason for the two different part numbers it for H&R to track what vehicles people are buying springs for.

THEN, I had her look up the spring rates:

With sport suspension (the 5xxxx number) - Front = 330, Rear = 360

W/out sport suspension (the 2xxxx number) - Front = 330, Rear = 400

Strange huh? Sport package cars have softer rear spring rates from H&R.
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Old 01-29-2009, 11:51 AM   #9
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I told you it had something to do with the sport suspension
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Old 01-29-2009, 11:54 AM   #10
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i installed the black H&R for my 330i non-sport. the red one was not recommended. big difference with the ride and you can feel it gripping the road when cornering. no complains and nicely dropped.
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Old 01-29-2009, 12:28 PM   #11
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Black's are "sport". We are only talking about the "race" in this thread.

I still find it odd that the sport suspension race springs are softer in the rear in than the non-sport, but whatever.
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Old 01-29-2009, 03:03 PM   #12
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I'm not buying it that the rear springs would be any different. That must be a typo or she must have been reading something wrong. Was she referencing the Race or Sport springs?
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Old 01-29-2009, 03:33 PM   #13
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She read the part numbers first, then the spring rates to me. I suppose it's possible she could have made a mistake, but after we were both questioning why 2 different Race springs existed she was like, "OH! here... they have different spring rates.." If you'd like to call and double check me, feel free.

I made sure she understood we were talking about both sets of "RACE" springs, as I gave her the part numbers.

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Old 11-10-2010, 10:28 PM   #14
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for definite answers and if anyone knows if there are height differences between the two.

I think I'm going to order them so I'll try call H&R tomorrow too see if they can give me answers.
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Old 11-11-2010, 05:29 PM   #15
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There are actually 3 different spring variants offered by H&R. It's actually a lot simpler to skip the whole with or without sport suspension nonsense and just look at the part numbers.

29484 - the red ones - per the TUV cert, lowers the front about 55mm and the rear about 35mm

29485 - the black ones - per the TUV cert, lowers the front about 35mm and the rear about 20mm

50484 - the "race" springs - not TUV certified, but interpolating from H&R's website, should be about 65mm front and 50mm rear

If you've already got the sport suspension, subtract about 15mm from those numbers.
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Old 11-12-2010, 04:48 PM   #16
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I called yesterday and the guy told me the front springs are 330 and rear are 400, and that all the race versions are the same. the part numbers are for the company use of logging what they sell to. I guess that makes sense.
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Old 11-12-2010, 06:05 PM   #17
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I called yesterday and the guy told me the front springs are 330 and rear are 400, and that all the race versions are the same. the part numbers are for the company use of logging what they sell to. I guess that makes sense.
Well he is at laest pulling your leg on the part number issue, so I'd be skeptical about his spring rate info.
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Old 11-24-2010, 01:59 AM   #18
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There are actually 3 different spring variants offered by H&R. It's actually a lot simpler to skip the whole with or without sport suspension nonsense and just look at the part numbers.

29484 - the red ones - per the TUV cert, lowers the front about 55mm and the rear about 35mm

29485 - the black ones - per the TUV cert, lowers the front about 35mm and the rear about 20mm

50484 - the "race" springs - not TUV certified, but interpolating from H&R's website, should be about 65mm front and 50mm rear

If you've already got the sport suspension, subtract about 15mm from those numbers.
hmmm strage,i have springs with 55/35 lowering and the color it's black ?
anybody tried to match oem sport springs with H&R springs and shocks,i have a H&R cup kit and i would like to swap rear H&R springs with oem sport springs(somehow H&R are higher than oem sport?! at least fot my car )

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Old 11-24-2010, 02:01 AM   #19
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you might be seeing old and new part #s for the same item. Thats very normal.
Also the H&R race spring that comes with say the "sport" cup kit, is a different color form the race springs you just buy separately, that could also be the difference in part #

Bear in mind they may drop to the same level, but the rates may vary slightly, and hence call for different part #s.
Since their spring rates are proprietary information, the only way to be sure what the different part #s really mean is to call them and ask them, theyre very friendly, helpful people on the phone.
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Old 11-24-2010, 02:03 AM   #20
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posible,here are some pictures of H&R kit that i recived
http://forum.e46fanatics.com/showthr...e=2&highlight=

in the pictures you can see the diference between rear oem sport springs and H&R springs

http://hrsprings.com/scripts/appguid...elID=52&q=2001 | BMW | 325i

this is what i bought

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