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Cake day: June 20th, 2023

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  • In a car with ABS, two sets of tyres with different grip will have a different point at which tyres lock up, with grippier tires locking up later and ABS letting the brakes bite harder before acting.

    Now a harder question is whether a tyre with less rolling resistance will be less grippy. All things equal, yes, it will. Tyres grip by deforming and creating friction in the contact patch, and the point of these tyres is to reduce friction.

    To make up for this, manufacturers use clever designs (e.g. where tyres can deform more under certain conditions) so that they can retain characteristics similar to tyres with more rolling resistance. Of course, everything in engineering is a compromise, which means that A) these tyres are more expensive because of the additional complexity and B) the design and materials science can only go so far and they have indeed slightly less grip; otherwise all the tyres would be like this.

    As an anecdote, Toyota sold the GR86 with Michelin Energy Saver tyres fitted as standard (in Europe at least) for “grip” reasons: they allowed the car to drift at really low speeds (some car journalists commented that it was remarkably easy to take roundabouts sideways at legal speeds).










  • No no no WB, you wanted to make it live service, now you deal with it keep adding content for the next 5 years.

    Obviously very far from reality, but I wish live service games were required to have a clear, binding plan for how long they’re going to be supported and what’s the exit plan. If they’re a service, they should have an enforceable contract.

    That would help buyers not buy a game that is going to be sunset in a year, and/or prevent publishers from releasing cash-grabbing garbage with no evident business plan or idea on why players are going to find the game worthy of giving them money for years.




  • Well it might be off, as there are other factors, but I wasn’t meaning it as hyperbole - road damage is proportional to the fourth power of axle weight, and a typical bus weighs about 10 times the weight of a compact, so damage would be roughly 10^4 times larger. This is called the “Generalised Fourth Power Law” and there are tons of links about it:

    https://camdencyclists.org.uk/2020/06/the-fourth-power-rule-cyclelicious/

    (Which btw, you can apply the other way and state that you need an insane amount of bicycles to match the road damage of a single car).

    If they took the top end bracket of SUV weights and the bottom end of bus weights, they could have reached vastly different numbers. I used 1800 kg (large sedan or compact SUV) and 18000 kg for a bus (the mercedes Benz citaro starts at roughly 18500 kg), to keep the numbers simple.