E90/sedan rear windows in Lexan

[evilspiritM3]

Wanted to see if there is interest out there in some Lexan rear windows for the sedan guys.

I am having a set made to lose some weight, but mostly to run a naca duct to push air to my Racetech seat.

If there are other guys in the SoCal area that want to commit to bring the price down please pm me. The majority of the cost is making the jig ($650) and then $150 per window after that.

[DB]

Sounds interesting. Any idea how much weight you will save with this change?

[SYT_Shadow]

Originally Posted by DB

Sounds interesting. Any idea how much weight you will save with this change?

I know what you're thinking lol

[DB]

Originally Posted by SYT_Shadow

I know what you're thinking lol

you got me lol

[SYT_Shadow]

We just got a 2011 E90 in white and it may end up needing these windows one day

[evilspiritM3]

Originally Posted by SYT_Shadow

We just got a 2011 E90 in white and it may end up needing these windows one day

So I ended up going a different direction, and am having Racewerkz in Burbank, CA fab/install these as a single set for me. So, no jig or potential for future copies, but cheaper on the whole. Going with Makrolon vs. Lexan.

Not sure about the weight loss numbers, but it won't be much for the dollar. The glass weighs the most, the motor and regulator can't be more than 3-4 pounds per side. Maybe a loss of 12-15lbs total?

I'll post some photos once it is complete.

[evilspiritM3]

Got the car back from Racewerkz.

Really happy with how these turned out and the air flowing to the back of the seat makes for a nice change. Makrolon was inserted into the original track and bolted on the bottom with rivnuts. It is about 99 percent the original shape of the glass. The piece is fully removable (should that ever be necessary) including the NACA duct, as it is all bolted in- no rivets.

[Richbot]

In for non-potatocam pics

[roastbeef]

think its possible to make something like this for the front doors that can replace the oem glass to retain a functional window? the only thing i can think of that would be tough is creating the same shape... i'm not familiar with these materials though.

[evilspiritM3]

Originally Posted by roastbeef

think its possible to make something like this for the front doors that can replace the oem glass to retain a functional window? the only thing i can think of that would be tough is creating the same shape... i'm not familiar with these materials though.

A shop that specializes in polycarbonate work can make something like this for the front coupe window. It would have to be heated and shaped to match the exact curvature of the existing glass, likely on a jig made from the original glass (this is the route I was originally going). It is a little easier on the sedan because we have window frames for a non-shaped/flat piece of polycarbonate to track to.