The problem with rubber tires is they wear the ground out a lot more, this increases with weight, these teams are going to be heavy. And if they run along the exact same spot each time it's going to damage the ground a shit ton. This why why steel wheels on steel rails are better, they can handle a lot more weight with less maintenance.
If you really can't put in a real tram with rails in, use trolley busses. Trolley busses can be fairly long and high capacity, while having rubber tires for hills. The benefit is they don't drive over the same spot each time. There's a ton more benefits to trolley busses and they are greatly underrated.
This sounds like a solution to a problem that doesn't really exist. Ok well, maybe cities too cheap to pay for rails is a problem.
Edit:
Even worse, it runs in batteries. This is terrible for weight and efficiency. Just throw up some centenary wires, reduces weight and it's more energy efficient.
Many newer trolley busses come with very small batteries so they they can drive to and from their depot's. The smaller battery means limited range, but that's not the point, it also saves on weight vs a battery electric bus.
Here's a few videos on trolley busses:
https://youtu.be/SB9EARKvCTc
https://youtu.be/Z22UUbpgJSc
Here's a video on a similar systems that's been removed cuz it's a dumb idea: https://youtu.be/Kr4EZwZbxwQ