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Inside the Vorsteiner Design Studio: Development for the F82 M4 GTRS4 Wide Body​

Vorsteiner possesses a unique dedication in creating things with their bare hands. From original hand-drawn sketches, to clay modeling, to each carbon fiber component hand-laid by their master craftsmen.

Vorsteiner shared with us exclusive images inside their design studio in Orange County, California. Their GTRS4 project shows their dedication and what it takes to create an original design from the ground up. It's extremely unique to see an aftermarket company spend countless hours in the design process with using clay modeling, only seen by the best OEM manufacturers.

It's one thing to take design cues and tweak them a bit, but it's gratifying to see someone's imagination take shape.

Enjoy this build thread as Vorsteiner releases more images to us, this is just the first part of their design and development for the GTRS4 F82 M4. Vorsteiner has announced that they will unveil this vehicle at the SEMA Show. However, additional finalized & painted photos will be sent to us this Thursday!

1. 3D Scanning
Scanning using a 5-axis 3D scanner with Blue Light Technology.

The vehicle is scanned using a 5-axis scanner along with a 3D alias software in conjunction with blue-light laser scanning technology and digitized. Circular targets are also placed strategically below panels ensuring an OEM fit using existing factory hardware.












2. Clay Modeling

The clay modeling begins! Using automotive modeling foam and the highest quality industrial plasticine, we begin shaping the rear quarter panel, moving toward the rear end. Vorsteiner's in-house master craftsmen with over 10 years of experience carve, shape and chisel the clay to it's final shape.

A specialized heater ensure clay is malleable throughout the weeks of modeling.






Specialized modeling foam ensures that the shape remains relatively light preventing any sagging or sliding.




Modeling the entire vehicle using nothing but a rendering on a sheet of paper!


The basic concept of the rear quarter panel is created. Dozens of corrections are made during this stage to ensure the panel flows with the rest of the vehicle's leading edges.


Adjusting the radius for the 50th time, yet still not finalized.





Seeing the excess clay removed from the vehicle was surprisingly beautiful.




More photos arriving shortly!!
 

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3. Clay Modeling Continued:
Rear bumper shaped in conjunction with the rear diffuser and over fenders.









Shaping the fender and bumper separation for the final clay modeling stage.


4. Beginning the Molds:
Prepping for the messy part...






5. Cutting and closing:
Now the scary part begins... drawing the line to cut the rear quarter panels.


A critical step to fit the massive 20x13.5 wheels with 345 Pirelli tires.


Sanding off the paint to allow for adequate bonding.


Fiberglass applied to close up the open quarter panel.


Working on the rear quarter panel flange for a seamless fit rather than screws or rivets.


6. Installation and testing:
Molding the quarter panel to the car


CNC rapid prototype fitted


And shaped with the existing M4 side vents


Measuring the wheel fitment to maximize inner and outer clearances:


20x13.5 wheel cut yet unfinished. Mounted with 345 Pirelli's for test fitting before brushing and powder coating.




 

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13.5?! Oh my.

That's some serious R & D going on.
 

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Always liked the process of car clay modelling, time consuming but rewarding when you see the end product. Keep the pics coming please!
 

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Discussion Starter #15
GTRS4 by Vorsteiner
The Special Edition GTRS4 Package Includes:
· Carbon Fiber Front Bumper with an Integrated Front Splitter Element
· Carbon Fiber Wide Front Fenders with Ventilation (2 inches wider each side)
· Carbon Fiber Aero Side Blade Elements
· Carbon Fiber Wide Rear Fenders (3.5 inches wider each side)
· Carbon Fiber Rear Bumper with an Integrated Rear Diffuser Element
· Vorsteiner 90mm Quad Exhaust Tip Finishers (Options: Brushed | Diamond Black)
· Vorsteiner Embroidered Colored Floor & Trunk Mat Set
· Vorsteiner Chrome Trunk Badging
· GTRS4 Forged 3-Piece Wheels, 20x10.5J | 20x13.5J in Gloss Brushed Shadow

GTRS4 by Vorsteiner by wheels_boutique, on Flickr
GTRS4 by Vorsteiner by wheels_boutique, on Flickr
GTRS4 by Vorsteiner by wheels_boutique, on Flickr
GTRS4 by Vorsteiner by wheels_boutique, on Flickr
 

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Not really a fan of widebody kits, but seeing what goes into them design and engineering wise gives a new perspective.

Later,
 
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