Rear springs again ffs

Discussion in 'E46 M3 (2001-2006)' started by lee gray, Apr 19, 2020.

  1. 19 Apr 2020 at 1:23 PM #1
    lee gray

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    Right so im sick to death of replacing rear springs seems to be every 5k one or the other rear springs snap so i think its after market time but what spring and damper combo is best? Im happy with ride height to be honest dont mind a little drop but dont really want it lowering by much if any and i defo dont want the front to look higher than the rears ie eibach. So whats everyones opinions?
     
  2. 19 Apr 2020 at 1:30 PM #2
    stax

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    I’m in the same boat. I noticed another broken rear spring on mine when swapping to my summer wheels.
    I believe this is the 5th time in 9 years but I’ve always replaced mine with 2nd hand oe items.. so unknown history.
    Just yesterday I received a pair of aftermarket springs from a guy on here, again 2nd hand. Supposed to be Oe spec, we’ll see.
    Job for Monday afternoon.
     
  3. 19 Apr 2020 at 2:10 PM #3
    TrojanHP

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    The Sachs ones from euro are pretty good and are the same thickness all the way up to the end. I’ve yet to see one of these snap - not to say it won’t but they seem a lot more reliable than the genuine ones.
     
  4. 19 Apr 2020 at 3:24 PM #4
    monkeyboy

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    Eibachs nice ride, only very subtle drop 10mm rear 20mm front had mine on for years no issues
     
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  5. 19 Apr 2020 at 4:36 PM #5
    Bmck

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    Think we’ve all had this problem. from my own experience the Oe springs from the dealer are fine there’s just a couple of design flaws. First the thin layer of paint that they come with isn’t fit for purpose so what I do is add more or paint them with POR 15. This will help prevent rust especially at the bottoms of the springs we’re they all tend to break. secondly, the poor design of the spring perches and the rubber pads they rest on means that small stones and road debris gather in that area chipping away at the Oe finish on the springs they then corrode weaken and break. This has been my own experience every time I had a broken spring. But since painting them before fitting so far so good. Oh and if you can clean out all the crap from the spring perches before fitting new springs.
     
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  6. 19 Apr 2020 at 4:48 PM #6
    lee gray

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    Every e46 m3 iv ever seen on eibachs seem to be or atleast look high on the front end compared to the rear and just isnt a look i want on my own car
     
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  7. 19 Apr 2020 at 5:43 PM #7
    R60BBA

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    What’s the mileage on the dampers?
     
  8. 19 Apr 2020 at 7:25 PM #8
    monkeyboy

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    In reality mines sits slightly lower I think that because it’s a convertible it’s slightly heavier. Lots of people rate H&R springs but they are a lower drop
     
  9. 19 Apr 2020 at 7:38 PM #9
    IanB

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    I have Eibachs and compared to standard the front is lower than the rear.
     
  10. 19 Apr 2020 at 7:45 PM #10
    lambert

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    On eibachs too.

    They sit and ride well for an aftermarket choice and don’t cost the Earth.

    The rear does sit lower than the front, this is normal for a e46, and it’s unfortunately expected that the passenger front in particular will sit high also, due to the way these cars are designed.

    The only way to get them sitting perfectly to your needs, is coilovers.
     
  11. 19 Apr 2020 at 8:52 PM #11
    Shaks

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    You can get thicker spring pads from bmw which would help a little. Oems are 5mm but im sure some models use 10mm or 15mm and does fit our cars
     
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  12. 21 Apr 2020 at 7:02 PM #12
    Farnsbarns

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    I've got the Sachs springs from ECP, thicker at the ends, (same thickness right through) 3 yrs no breaks.
    I fitted new shocks at the same time - seems ride is similar to OEM
     
  13. 21 Apr 2020 at 8:36 PM #13
    AC427

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    Thanks. i had forgotten that. Has anyone got any part numbers for them?
     
  14. 21 Apr 2020 at 10:30 PM #14
    E9JMX

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    I have Eibachs in mine, and it sits higher at the front and lower at the back, however it's even lower on the o/s rear, because its snapped a spring too. So not just oem springs break. I'm thinking of going H&R all round. Is it really worth losing a bit of comfort from the a Eibachs, for that slightly lower look!?
     
  15. 22 Apr 2020 at 9:09 AM #15
    zulfario94

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    H&R are really firm, I had them on my M3 and using it daily it was too firm for me (I'm 25). On a blast and when pushing on it felt brilliant but the UK roads are so crap that using it daily was not comfortable. The drop and stance though was perfect on genuine csls.

    If it's not your daily then go H&R if it is stick with eibachs. The only other option is coilovers after this but then your spending 600+
     
  16. 22 Apr 2020 at 9:50 AM #16
    E9JMX

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    Thanks for that. I had Eibachs/AC Schnitzer springs in my daily F30 330d last year and it was perfect. But the M3 feels a bit too raw. I have also replaced worn shocks at the back (hence spotting the broken coil) but I'm only dailying the M3 at the min because I sold my god awful E90 320d daily because I hated it. Though I am on the look out for a new daily, so the M3 will be returned to the garage once that happens. So H&Rs it is then
     
  17. 22 Apr 2020 at 11:54 AM #17
    zulfario94

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    The real problem the m3 gave me was on motorway going over speed reduction bumps, the ones that lead to roundabouts etc. The car was horrible going over them. I don't think the 19s helped but other than that it was nice, the drop was even and it was in my opinion sat perfectly.
     
  18. 25 Apr 2020 at 5:38 PM #18
    lee gray

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    Really dunno what route to go eibachs are out of the question as i hate the way it drops the car. And i dont want it to firm either. Oem ride is perfect for me but i cant be replacing them over 5k or what ever it is
     
  19. 25 Apr 2020 at 5:58 PM #19
    R60BBA

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    Mileage on the dampers mate?
     
  20. 25 Apr 2020 at 7:37 PM #20
    crockett

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    I fitted some Turner Motorsport rear springs. Same spec as BMW ones with a lifetime guarantee. Had them on two years/3k miles and very pleased with them.

    Although it’s not a major job to replace them, it would make me spit blood having to mess about every four years (that’s how it’s been with my car since it was manufactured in ’03) with something that should be fit and forget. Plus a broken spring could potentially cause a dangerous situation.
     

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