After replacing the rims there is less room in the wheel well on the passenger side?

Hello,

So you are saying the gap between the tire and the wheel arch is different on the driver side then the passenger side?
Can you upload a pictures of what you are observing? That might help to figure out the issue.

https://www.2carpros.com/articles/wheel-removal-and-re-installation

Thank you.

No, it’s the passenger side that has the problem! The mechanic is saying my car is uneven, but I’ve never had this problem.

That is the driver side.

That is the passenger side you can see the difference is the gap.

I don’t have any pictures. arm they are saying my car is uneven? but it’s never been like that. They are now saying my car is uneven but never had this problem with any other rims.

It is little strange for that uneven stance.
Unless some bushing got somehow moved it should not be uneven like this.
If its a bushing it might even out after few days of driving.
Try measuring the gap between the tire and fender arch. Then check again in few days to see if improved.