This picture is a little misleading. Unfortunately, this isn't a post about a race on a frozen lake or a snow covered rally stage involving the three hottest AWD hot hatches (the WRX STI only a hatch in spirit). This is about the highly anticipated test recently posted by Car & Driver. First things first, I wish C&D would stop testing 30-50 mph and 50-70 mph in top gear for manual performance cars. They are hugely (almost exclusively) influenced by gearing and are completely irrelevant. I could see them being relevant in a more mainstream class (say, comparing a base Focus manual to a base Cruze manual) because an average buyer may not want to shift. But there is no way the buyer of any of these cars is going to wait over 7 seconds to go from 30-50 or approximately 6 seconds to go from 50-70? Worse yet, why would anyone floor a small 4 cyl turbo in an overdrive gear and lug the engine outside of boost? Now with the rant out of the way, let’s look at numbers. ...
I'm finishing up a comparison post (link to introduction: Intro: Focus RS vs Golf R vs WRX STI vs Evo X ) and, throughout the post, I realized that I have to go off topic a lot to talk about how each type of differential changes the way the car drives. As a result, I thought I'd write a separate post to go into more detail before I post the comparison to keep it more focused on the cars and avoid veering off topic too much. By saying "Limited Slip Differentials" in the title, I am including torque vectoring diffs because, although current conventional terminology treats them differently, a torque vectoring differential is, in essence, a very sophisticated limited slip diff (LSD) that can be manipulated to actively help the car handle better. And while none of the cars in the comparison use open (without help from the brakes) or non-gear mechanical LSD’s, I’ll briefly discuss them so that the post is more inclusive. I’ll only focus on using power to help the...