How does a larger rim effect the car

[Jack960]

Hey guys, I know there are many posts like this but I have some more specific questions.

Over the years I have heard much debate about what larger rims do to a car. No one has really given a real answer with a reason and I am curious because I like the look of 19's and 20's but not if it takes away the performance.

From my understanding, as long as you keep the same rolling diameter (larger rim smaller tyre wall) and have a rim that weighs roughly the same as stock, there should be an improvement in handling. Due to the fact that a larger rim is generally wider giving the wheel more surface contact with the road. Is the correct?

I realize the biggest compromise is the comfort as the tyres will be low profile and will absorb less shock meaning you feel more. Is this damaging to the suspension of the car?

I have heard things about moments on the rim, a larger rim has a larger diameter meaning the bulk weight of the rim is distributed further away from the center. Thus it would take more effort to rotate it. does that make sense?

Thanks for your time