1983: Porsche 911SC Cabriolet is just as fast as the 911SC Coupe, thanks to science
A very logical magazine advertisement, one of the “Consumer Orientation” series Porsche did during the 1970s and 1980s.
Between 1976 and 1986, Porsche ran a sequence of 28 fact-heavy, highly technical print advertisements known as the Porsche Consumer Orientation Series. Every Porsche model during that time got at least a couple of these ads (the 928 appears to have been favored with the most), and 1983 saw #21: this vividly colored centerfold entitled “Introduction, Specifications, and Performance of the 911SC Cabriolet. The newest Porsche under the Sun.”
So that no prospective Porsche buyers felt frivolous buying a convertible 911— just the right car for California’s rad new “Golden State” license plates, we might mention— Consumer Orientation #21 makes it clear that the 1983 911SC Cabrio had the same top speed as the allegedly more sensible 911SC Coupe: 139 mph. That was serious stuff in the last year of the dreaded Malaise Era.