Last week, I spent another couple of days at our track with the local PCA to participate in their annual High Performance Driving School ( Track Daze - link here ). There was great turnout with plenty of cool cars, including the new 991 GT3 RS in the picture below, which you can also see (and, more importantly, hear) pass me in the video at the end of the post at 5:55. Weather did not disappoint either, presenting us with a dry track for two full days. This is the first time I have been able to attend, as PCA run their schools on weekdays and I wasn't able to find time the last few years. Luckily, this year, I planned it well in advance and made it there. The school has four run groups - Green for novice students, Yellow for intermediate students, Red for advanced students and newer instructors, and Black for experienced instructors. The local BMW club - BMW Club Atlantic - also arranges HPDS's ( Advanced Driver Training - link here ), which I have been going to sin...
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...







