Messing about with seats.. anyone know the seat mount and rail weight?..

Matt Scarbro

Member
 Lincolnshire
I fitted some of what I thought would be the ideal 95% road 5% track seats to my fairly new to me E86 in the shape of a set of half leather, manual Sport seats.

Fabric base for less slideyness compared to leather and manual adjustment for lower weight and potentially lower seating too (probably not).

Anyhow, as you do when swapping seats I weighed them…

Outgoing full leather, heated and electric SE seats were a whopping 24.7kg including runners

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Here we go I thought, got to be a bit of weight saving here for me…

It won’t come as a surprise to many regulars on here that the Sport seats were an even more whopping 28.4kg!!!

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Whatever were BMW playing at putting that much weight in the seats of a junior sports car?!

Anyhow, it has made me rethink the seats so I’ve been weighing up (terrible pun intended) other options.

Does anyone happen to know how much the standard non electric runners and mounts weigh? Or have a set they could weigh for me?

Trying to ascertain if the weight is all in the seat itself or if the factory mountings at heavy as hell too.

For anyone that happens to be interested I weighed a few other seats I had in the garage at the same time:

Impreza factory recliners with runners: 20.5kg

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Sabelt buckets from the MX5, sans mounts: 9.5kg

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Corbeau recliners, also sans mounts: 11.4kg

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Mk2 CR-X seats, no mounts again: 10.6kg

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Appreciate that’s an utterly random selection of seats and comparability with and without mounts is limited, but I find it interesting so others might too.

Essentially I’m tempted to fit the Corbeaus, should be 20-25kg to be lost once mounted and provide slots for a harness too, without sacrificing comfort.
 
j3nks79 said:
Unless it’s just a dedicated track car I doubt your are going to notice 4kg a seat

I dare say even in a full race car I wouldn’t notice!!

With this car, my aim is to strongly consider weight in everything I do with it, with the hope that cumulatively I can save material weight. In the context of that, even 4kg per seat is a decent contribution to the cause, but I genuinely expect to save north of 20kg across the two seats.
 
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