Comments by "earthstick" (@earthstick) on "Engineering Explained" channel.

So these manufacturers that do 'torque vectoring via braking' instead of torque vectoring diffs must use open diffs? If they use LSD or a locked diff and brake the inside wheel when cornering then that would create more resistance on the inside wheel and the LSD would send more torque there. But that is the opposite of what is required. With the open diff it does not matter if the inside wheel has more resistance because it will get the same amount of torque as the outside wheel. The brake will reduce the force and induce yaw.
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With the economies of scale argument, you are putting the onus on the purchasers to buy expensive cars until the sales have increased enough to warrant manufacturing enough to bring the price down. If all it takes to bring the price down is to produce more cars, then the manufacturer should simply make more. Then they will be cheap and people will buy them. Why should the purchaser drive momentum?
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Not convinced of the argument that weight doesn't matter anymore because tyres are better. Tyres and weight are not mutually exclusive. You can put the best tyres on a light car and the benefits are multiplied. You could get round a corner even quicker still.
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