M seats project

cj10jeeper

Lifer
Lichfield, England
I really wanted ///M seats from the day I purchased the Z4. Somehow they seemed the ‘right’ seats Vs the much more armchair like sports seats. I recently sat in a model in the dealers upgraded to M seats and steering wheel and it felt a world different, so my decision was made.

Next up was the desire to go ‘red’ - Dream Red to be exact as having Sterling Grey paint I though it would really set it off and felt the black on black interior was a bit too Germanic and dare I say Audi/VW/Porshe like.

I also love the electric memory seats. I share the drive with my wife and we have the seat in very different positions, so the fully automatic on key opening is a joy. We’ve had it on the X5 and it makes our lives so easy.

Finally - heated seats. It’s cold in England at times and again the good lady loves heated seats. Roof down too it’s a great help as I can at least keep one side warm :)


The biggest issues here were:

1) ///M seats from BMW were out of the question due to £££’s
2) Dream Red ‘M’ seats on the second hand market are rarer than hens teeth
3) Electric, memory, heated, red, ///M – well I’d be waiting for ever…


So I decided to make my own.

Firstly a bit of luck and I managed to buy some mint condition 2005 Dream Red ///M seats….wow

The next stage was looking through the online parts catalogues it became apparent that there were many common components, so it seemed likely that I could do some switching around to make what I wanted.

So here we go:

Take my pair of 2003 electric sport seats – dismantle them
Backs off
Wiring loom out, pads sensors, etc.
Trim off
Squabs and pan base off

Take a pair of ///M manual seats – dismantle them to the same level


Stir it all around on the floor a bit and start to rebuild from the components

Manual base
DSCN2430.jpg


Memory electric base
DSCN2429.jpg


Add the red squab, pan bases and backs onto the electric bases (It was fairly easy once I knew how, but I made hard work of it as had no idea what I would have to dismantle, had not done it before and the TIS is not really designed to support this sort of dismantling work)

This gave me my new seats and I rebuilt remainder into a perfect set of black, sport, manual, heated, seats.

The end result is I have ‘///M’ sport seats, heated, electric, memory, in Dream Red - something that I doubt I could acquire otherwise.

New control panel
DSCN2433.jpg


Interestingly the weight difference is minimal as the only extra weight is 4 motors/actuators, less the manual controls. I did some weighing and estimate I added a total of 10kg to the car.

I perhaps just need to change or recover the door cards to complete the transformation, but they are serious £££’s new, so we wait or find a local upholsterer.

The look IMHO is outstanding against the grey paint and dark leather/brushed aluminium interior and driving pleasure a quantum leap forward. :driving:

The end result
DSCN2440.jpg


DSCN2441.jpg


DSCN2439.jpg


Now all I need is the MFSW to arrive and I’m almost finished (for now)

Post script – the error I made is to move the car with the passenger seat out. This triggered and airbag warning that required BMW to reset the system :headbang:
 
Thats awesome! i personally hate the memory seats and i would love to trade my dream red,heated, memory seats for some manual heated //M seats. Maybe one day.
 
Congrats. The best way to start a project no else has done before, compare part numbers. :thumbsup:
 
Nice - and you did that quickly, as well! I remember you said the eBay seats were nearby. I've seen similar projects on the E46 3-series forums; it seems like everyone always winds up dismantling more than they need to, so no shame there. I think it'd be a similar process to fit CSL seats to a Z4 - the E46 bases stand higher, but if you swapped them onto your stock bases they should fit perfectly and wire up to the BMW electronics so there'd be no error messages like with aftermarket seats that don't have airbag sensors.
 
Defy said:
Thats awesome! i personally hate the memory seats and i would love to trade my dream red,heated, memory seats for some manual heated //M seats. Maybe one day.

Defy is it the memory feature you hate or the sport seat? For sure the sport seat is no such thing and IMHO designed for rather wider bottoms and the luxurious armchair feeling...

CSL bases - never even considered it but give me some part numbers and I'll see if it can be done...It all boils down to if the seat pan fits the frame and the spacing of the back support posts is the same. Of course there could be many designs of which I have no idea but manufacturers love consistency. Take any part number you like and cross reference and you'll see if often fits 50+ models across the range.
 
Aebous said:
How much would you say this ran total? And about how much work would you say per seat?

I'll not post prices for this one on the site and I may sell my existing seats to offset the costs so I'm not sure of the exact figure yet - PM sent
 
Bloody brilliant :thumbsup: I would love to do this, looks like i'll be keeping an eye on the bay for a pair from now on!
 
Am i missing something here, don't you get the M sports seats and chunky M steering wheel as standard in the sports model anyway?

I thought the only difference between the M model and sports steering wheel was the stitching?

J.
 
cj10jeeper said:
Aebous said:
How much would you say this ran total? And about how much work would you say per seat?

I'll not post prices for this one on the site and I may sell my existing seats to offset the costs so I'm not sure of the exact figure yet - PM sent

Go on, post how much the new seats cost???? lol

Cheers

PaulN
 
Wow another amazing write-up!

I really like the red with black inserts like you have now, I wouldn't change it.
 
Wondermike said:
Wow another amazing write-up!

I really like the red with black inserts like you have now, I wouldn't change it.

Thanks for the comment. Interesting that you favour the plain black doors. I've sought some quotes for trimming but in no rush
 
Yep it doesn't look odd at all, I reckon it stops the red from being too overpowering.

M seats are the best ever :sweetheart:
 
Wondermike said:
Yep it doesn't look odd at all, I reckon it stops the red from being too overpowering.

M seats are the best ever :sweetheart:
+1.. I like them black as well.
 
cj10jeeper said:
Defy said:
Thats awesome! i personally hate the memory seats and i would love to trade my dream red,heated, memory seats for some manual heated //M seats. Maybe one day.

Defy is it the memory feature you hate or the sport seat? For sure the sport seat is no such thing and IMHO designed for rather wider bottoms and the luxurious armchair feeling...


Both! The chair has no support and hurts my back if i am in the car for more than an hour or 2 and the memory seat take too long to move! I had seats similar to the M in my old car (2004 VW R32) and i loved them the only problem with that car was the top didn't go down :thumbsup:
 
Congratulations, it looks very good. Well worth it i reckon. I have electric dream red leather seats in my Z4 and love the way they look against the silver paintwork, i have got a new 57 plate 3.0si sport to drive round in this week (whilst mine is inthe body shop) and i must admit, the M sports seats are amazing !!!....wish mine had them to be honest as the usual seats i think are a little unsupportive for a sports car...

again, well done on the install, looks amazing..
 
Went on a 30 mile mixed terrain spirited run last night and cannot believe the difference. Truly amazing the level of support and improvement in control while cornering.

I cannot decide if the seats look in isolation as it's normal to have small echoes with such colour splashes and it needs red cards to balance it, but am equally mindful of the overpowering issue.

Of course if I do cover the doors I'll need a source of red leather. Do you think this would be enough and a good match.....??

seatfabric.jpg
 
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