Pardon me if I ask the obvious question, but did you divide your result by the average number of people moved? Because that's the actual utility of mass vs. individual transport. I would find it rather surprising if tire wear was the one measure were buses didn't win out.
Tire temperature also will play a big roll in tire wear, and I wouldn't expect bus tires to get very hot only rolling half the time and at a lower speed than the typical car.
And of course you also gotta factor in passenger count. Buses generally have more than just 1 or 2 people, while the vast majority of cars will have 1 or 2 people most of the time. And even if a bus tires were to wear out twice as fast as a car's tire, that is still less wear per person than a car.
No bus tires to not typically last 500k miles. <100k is the norm, and really not more than a long-life car tire.
They do get retreaded more often than car tires do, but that just means they get new rubber added regularly.
Harder rubber seems like it could make a difference, but then you could also put tires with harder rubber on a car.
You can get a heavier vehicle to have the same pressure at the road by using more and bigger tires, but then the problem is that the tires are bigger and there are more of them.
> plus its normal driving patterns have less wear than typical Tesla use.
Isn't a city bus constantly starting and stopping, both as a result of city traffic and picking up and dropping off passengers?
> To make those sorts of calculations easy, you can ignore all the pressure/usage/etc nonsense and just do basic math on tire dimensions (including min/max tread depth and width, not just radius, though I typically ignore siping and whatnot) and typical longevity.
I tried plugging these in and it still comes out as a 6-wheel commercial bus has several times the tire wear as a 4-wheel light truck, rather than being the same.
And I expected the difference to be even more, but I guess that goes to show how much the weight argument is motivated reasoning if ~7x the weight is only ~3x the tire wear and then people are complaining about something which is only ~1.2x the weight.