A few suggestions for in-cabin upgrades

mRoadster06

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Sep 23, 2024
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For those that may have seen my “introduce yourself” thread (here), you’ll know that I replaced my c7 corvette with my new-to-me 2006 M Roadster. I absolutely love this thing so far, but if there’s one area that it was well behind the much newer vette, it’s interior amenities. Had I never experienced such things in the vette, I probably wouldn’t have cared that the M Roadster didn’t have them, but once I did a little research, I was surprised how easy it was to was to add them, so thought I’d share some info:

Before we get started - to be clear - the “real” mods are in process also haha - mine came with Super Sprint exhaust and CSL-style wheels, so nothing to do there. Currently working on an intake and strut bar, but I figure there are plenty of threads on those already and I wouldn’t have much to add. Instead thought I’d focus on interior stuff…

1) Apple CarPlay / Android Auto … if you haven’t lived with this, it makes life so much easier. It’s more important in a daily than in a weekend toy, but why not have it in both if it’s easy enough. I went with this one because a) it doesn’t interfere with sound quality, instead Bluetooth audio is direct from your phone to your regular head unit without passing through the CarPlay device first and b) because it auto-dims at night, which is absolutely critical in a convertible so you can have max brightness during the day and not be blinded at night and c) it attaches to the rear view mirror, so it doesn’t look tacked onto the dash like others do and d) it has front and rear dash cams that are always recording if turned on and could come in handy if there’s an accident or something
- note that this setup works best if your existing head unit supports Bluetooth streaming audio. If not, you’ll have to use an aux cable and you’ll lose steering wheel controls for previous / next track
- note2 that the auto dimming feature is based on a preset time of day, not actual brightness like your iPhone … but still way better than no auto brightness at all

2) backup camera … in this case, it’s built into the CarPlay rear view mirror unit linked above so no separate purchase needed. The nice thing about this one is, because it replaces your rear view mirror and is always on, you don’t need to tap into the reverse light wiring. A backup camera certainly isn’t critical on such a small car, but nice to have as visibility isn’t great when top is closed. Wiring was fairly easy … you just run it along the windshield, down the door jamb, underneath the panels by the door, under the roll hoop, into the trunk, under the trunk lining, through the drain plug, out from the rear diffuser, and behind the license plate.
- note - some people won’t like a full-time rear view camera in place of a traditional mirror. If that’s the case, you can buy something like this, and then you can have both, along with CarPlay / Android auto

3) cup holders … for those of you whose cars weren’t optioned with them like mine, this was an extremely easy install, got mine from here.

4) ventilated seats … this is going to be controversial, I know. You paid for nice BMW leather and instead you’re sitting on super cheap pleather, I get it. But … here in DC, it gets super hot in summer, and I’m one of those people that always has the top down no matter the heat, and the AC blasting. The ventilated seats in the vette were a game changer, so I needed something similar here. Went with these and they actually work pretty well. They actually get colder and hotter than the OEM heated and cooled seats in my vette, and because the center is mesh and its design mostly retains / enlarges the side bolsters, you don’t slide around much at all when cornering. They have a “massaging” function which is terrible and they’re not quite as softly padded as the BMW seats, but overall not bad and a great solution for swamp a$$ in the summer.

5) better accessory power - as most of you know, the 12v cigarette lighter plug in these cars is always on (not switched with the ignition, so you have to manually turn everything off), and it’s in the front of the car - so if you plug in accessories it ruins the look of the interior. So, I bought a fuse tap and an aftermarket 12v cigarette lighter outlet and a 3way splitter. Using these, I tapped into a “switched” (by the ignition) fuse in the fuse box, installed the new 12v plug in the pocket behind the passenger seat, and used the 3way splitter to be able to plug in 3 accessories (2 ventilated seats and the CarPlay / rear view camera device) - and it all looks clean and out of site in the cabin.
… if this install sounds complicated, believe me it isn’t. Tons of YouTube videos showing how to use a fuse tap, and I did it in 30 minutes zero electrical experience. There are even a couple bolts at the top of the fuse box that provide the ground so you don’t have to go far, and you just hide the cables underneath the center console plastic.

Now, I’m getting close to the best of both worlds I think - I’ve recreated most of the conveniences from the c7, in a much smaller, higher revving, more exciting package! Almost there, the cold air intake and the strut bar will be the icing on the cake!

The only remaining feature from the vette that I wish I could recreate is auto rev matching. Again, controversial I know, but it made some magical noises dropping down into 2nd gear as you approach every red light haha. Guess I’ll have to get better at that heel and toe thing…

anyway, just thought some might find this info helpful.

if anyone else has suggestions along these lines, I’d love to hear them!

Happy driving!
 
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RickyBobby

Zorg Guru (III)
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May 9, 2020
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Was interested to read your introductory thread and as a fairly recent Z4MR owner I was glad to read your conclusions regarding the comparisons to the other cars you had tested.

The roadster is my 24th Zed during an ownership period that started back in 2018 with a Z4MC and a bit like yourself I couldn't ever seem to get the S54 experience out of my head - so here I am but this time in a roadster.

On reflection the roadster is much more suited to my requirements than the coupe but unlike you the lack of interior tech and aftermarket modifications is something that appeals to me. My coupe had and Eventuri intake fitted and when I bought the roadster the owner offered to sell me a Gruppem intake but I declined. I also had a genuine ///M strut brace on the coupe and had BC racing coilvers fitted but don't intend to going down that route again.

Essentially the only modifications I've inherited on the roadster are the black grilles and stubby aerial. In addition it's relatively poorly specced but it does have the carbon leather dash and heated seats. I love the contrast it provides to my daily which is a Tesla Model Y so for now I just plan to enjoy the S54 in stock form.

As you say they really are great cars :thumbsup:

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mRoadster06

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Joined
Sep 23, 2024
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3
I actually agree, the M Roadster is a nice tech detox from our daily which is a Jaguar I-Pace EV. We also have an older R57 Mini JCW daily we sometimes use, but it’s auto as I have to share it with the wife

I ended up removing some of these interior mods actually … I still like the convenience of CarPlay to still have that, but I removed the seat covers and some other stuff cause it wasn’t as comfortable as the OEM seats. I just added a small fan to blow some air on my back / butt because the hot summers can be brutal when you’re as committed to top down driving as I am haha

I did add a weighted shift knob and an Eventuri intake which does sound amazing but otherwise don’t have much else planned in the way of mods

But yeah, the tech detox and the s54 on a twisty road is exactly what I love about this little car

Have you actually owned 24 Z4’s? Or is that a typo?
 

RickyBobby

Zorg Guru (III)
Supporter
The M44 Massive
Joined
May 9, 2020
Points
143
Location
Sheffield, South Yorkshire
Model of Z
Z4MR
I actually agree, the M Roadster is a nice tech detox from our daily which is a Jaguar I-Pace EV. We also have an older R57 Mini JCW daily we sometimes use, but it’s auto as I have to share it with the wife

I ended up removing some of these interior mods actually … I still like the convenience of CarPlay to still have that, but I removed the seat covers and some other stuff cause it wasn’t as comfortable as the OEM seats. I just added a small fan to blow some air on my back / butt because the hot summers can be brutal when you’re as committed to top down driving as I am haha

I did add a weighted shift knob and an Eventuri intake which does sound amazing but otherwise don’t have much else planned in the way of mods

But yeah, the tech detox and the s54 on a twisty road is exactly what I love about this little car

Have you actually owned 24 Z4’s? Or is that a typo?
Unfortunately it's not a typo but it's not just Z4's - I've had 10 Z3's, 5 E85’s, 3 E86's and 5 E89's.

Are you also a member of the Z4Forum?
 
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