No, we advise a 102 tyre up to T30. And a 103+ for T32. This works out on 20’s to 275/35/20 102 for up to T30. And 265/40/20 104 on a T32.
We never fit or advise to fit under rated tyres or wheels.
You are correct. It’s axle weight, not vehicle weight divided by four - so many people get this wrong, even dealers.
HTH