I'm sure there are some out there who would think that messing with the iconic 911 shape is blasphemy. But for the rest of us, this 911 may just be the prettiest 911 ever made. The reason you probably have never heard of it is because only one was ever made and it was built over 50 years ago. Back in the early 911 days (i.e. 1960's-1970's), Porsche didn't make a 911 Cabriolet. The engineers in Stuttgart didn't think they could design a convertible version (or perhaps feasibly build one) that would meet the American National Highway Traffic Safety Administration (NHTSA) rollover safety regulations, which is part of the reason the 911 Targa exists. Since the American market was quite important to Porsche as far as sales and profitability of the 911, a convertible wasn't built back then. It wasn't until 1981 that Porsche showed the world a concept 911 Cabriolet at the Frankfurt Motor Show and a production version didn't come out until late 1982 as
BMW M2 equipped with an eLSD - BMW © A few weeks ago, I posted about traditional clutch-type limited slip diffs (LSD's) and how they work. You can read about those in the previous post: How Limited Slip Diffs Make You Faster on Track . But as you might know or have learned from reading the article, they aren't without their faults, which means engineers are always working to get around those limitations. You may not be surprised to learn that something like the Ferrari 488 GTB doesn't use a traditional limited slip diff, but it's not limited to super cars, far from it. Cars like the Golf GTI, the Civic Type R, various Mustangs, Corvettes, and BMW M cars, and even the Lexus RC F and GS F, all avoid a traditional limited slip diff in favour of one of these technologies. To keep things simple, I'll focus on two wheel drive vehicles. The vast (vast) majority of principles apply to all and 4 wheel drive vehicles, but there are some subtle differences that I'll