RUF’s New Chassis Changes Everything in The Custom Porsche World

by Heather Platt | Posted on Thursday, June 14th, 2018

If you’re a small family-run car company like 911-wizard RUF, certain hard decisions have to be made to keep your R&D budget in balance. For Alois Ruf, the good news is that blasting down the Autobahn at well over 220 mph in the name of science is a low-cost, yet more efficient alternative to spending weeks at a wind tunnel.


On the other hand, if your V8-powered 911 concept–the 997-based RGT-8–won’t comply with European emission regulations right after a cold start, you either spend money figuring that out, or on developing the future of your entire business. Given your resources, there’s just no way of doing both, and RUF went for the long-term investment. Which is a new chassis that shares absolutely nothing with Porsche.

The legend of RUF getting bodys-in-white straight from the Porsche factory was only true in the early eighties. Once Porsche modernized its assembly line, it became impossible to lift a few bodies off the line to help out RUF every now and then. When the machines took over, RUF had to start buying Porsches like everybody else. It wanted the cheapest base models, but ultimately ended up paying for the higher trim to get the necessary wiring built into the harness.

But the turbocharged CTR and its naturally-aspirated sibling the SCR aren’t built on a Porsche platform. RUF spent years coming up with the perfect alternative, and the work is finally paying off.

Since RUF doesn’t have the autoclaves needed for carbon production, around eight to ten different German suppliers contribute to a rolling chassis. The carbon fiber monocoque take a week to create, and it features a tunnel to allow for all-wheel drive. Attached to that is the welded subframe assembly, which is completely flexible, making the new chassis suitable for both rear- and mid-engined layouts, as well as cabriolet bodies. With the carbon tub, the rigidity won’t ever be compromised. With carbon brakes in the corners, the fully loaded rolling chassis weighs around 573 lbs.

From there, full assembly only takes about two or three more days, with the carbon skin designed by Freeman Thomas completing the looks. The final product may appear to be a small, wide, roomy and lightweight 911, but it certainly isn’t a Porsche by any stretch. And not just because RUF is officially recognized as a manufacturer by German law, just like BMW specialist Alpina.



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