The current (and outgoing) BMW M3 upset quite a few purists when it switched to turbocharging to boost power from a long line of naturally aspirated engines. It looks like the upcoming G80 M3 based on the new G20 3-series is looking to buck the tradition again by being the first ever M3 to offer AWD/4WD. That's right, it looks like the next M3 will send power to all four wheels according to a report by Auto Express. Of course, it won't be the first ever M-car to offer AWD. That honour goes to the current M5 which was the first M sedan/saloon car, so perhaps that should have been a sign of things to come. It makes a lot of sense, given the competition. Fast Audi have been AWD for several generations and recently, AMG announced that the future of AMG is four-wheel drive. Tough Competition Audi is nearly synonymous with AWD and with AMG now switching to AWD, a RWD M3 would (unfortunately) be quite handicapped in terms of traction and objective performance. Competition ...
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...