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Thread: M3 or M6 seat upgrade?

  1. #1
    Join Date
    Jul 2018
    Location
    Campbell, CA
    Posts
    168

    M3 or M6 seat upgrade?

    Ever since I bought the car I've been on the fence about the seats due to them not having lumbar. I had the chance to sit in some e46's with lumbar and the difference wasn't all that big. I've been reading up on people putting seats from M3's and M6's into sedans without too much modification, so I've been looking into that. I've come to the conclusion that both are fairly plug and play minus the seatbelt rail, but I can't really tell which seats are better.

    What I want out of the upgrade:

    -Lumbar and tight bolstering
    -Heated seats, I already have CWP so I want to keep that function.
    -Softer cushions
    -Good condition leather, no major defects
    -OE look, not too flashy

    I've considered aftermarket but for the last reason I'm hesitant. Budget wise I'm fine with 500, but I could spend up to 800 if the M6 seats are really worth it. What are you thoughts on this, and who has experience with either or both?

    My car is a 2004 330i ZHP with CWP and black leather. Also i'm 6' 1'' and weigh 160lbs, if one seat fits my body profile better than the other. Thanks for your input.
    Last edited by ComradeNick; 10-08-2018 at 11:18 AM.

  2. #2
    Join Date
    Mar 2016
    Location
    Madison, Alabama
    Posts
    330
    +1

    Have to open the sunroof to wear a helmet. Plus the zhp seat leather is hard.
    Family that races together stays together
    2005 330Ci 6MT SGM (x2)

  3. #3
    Join Date
    Nov 2013
    Location
    Bay Area
    Posts
    2,972

    M3 or M6 seat upgrade?

    I swapped non-lumbar e46 m3 seats into my sedan. Noticeable upgrade but still lacking bolstering for track use. I’ve since paired it with a 4-pt schroth, and it’s a good combo that I won’t change.

    Also, I did notice they were at least 1/2” lower, so I fit with my helmet. I’ve also started taking out the grab handle, as one less thing for my helmet to bump on.

    Dustin put m6 seats into his car. They have lumbar. And they feel amazing. They’re so comfy.

    If I could do it again, I’d definitely do m6 seats. They’re noticeably superior to mine. They have the bolstering AND are so so soft.

    The problem with m6 seats? They’re rare. But worth it.


    His: 05 330 ZHP Imola Red - 07 Z4 M Coupe Imola Red
    Hers: 04 330i ZSP
    2004 325 M56 Steel Blue Metallic - Sold
    Stephen's DD & AutoX/HPDE Build Thread
    Stewart WP - Z4M LCAB - M3 trans/motor mounts - DICE MediageBridge Duo - ARC-8 17x8.5"
    DrVANOS - Mason Engineering Race Strut Bar - E30 Exp. Cap - Custom Black+Beige Interior - M3 Seats
    Bilstein PSS10 - Turner Sway Bars 27/21 - ECST RTAB Limiters - R.E. RSM


  4. #4
    Join Date
    Mar 2016
    Location
    Madison, Alabama
    Posts
    330
    +1 on m6 seats.

    I’ll go with the recaro sportster for the race car. Would do the m6 for a daily.
    Family that races together stays together
    2005 330Ci 6MT SGM (x2)

  5. #5
    Join Date
    Jul 2018
    Location
    Campbell, CA
    Posts
    168
    This one is going to be my daily so I'm definitely going to go with the M6 seats. Got to start looking.


    2004 BMW 330i ZHP Auto - 96k Miles - Silver-gray - Black Leather
    Dinan CAI + Stage 2 - Dinan Strut tower - Cross Drilled brakes
    Orion V4 angel eyes - DEPO clear lights - Eonon GA9150A - Alcantara Coby Wheel

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