Hey guys I have to get new rims for the back axl of my car trailer because i decided to put brakes on it and my ones dont fit anymore. My question is. The rims I took off have 195/75R14 tires on them. How do I tell what the width of my rims are? I wanna get new back ones that are roughly the same width.

 

As far as I know you need to remove the tires to measure them.
I would want to stay away from 14" rims on a car trailer as most of the tires you would find aren't of the load ratings that you'd want.
I see you are in Canada, get with a real good trailer supply place and find something like the U.S load range 'D' tire that will monunt on a 15X7 rim.
I know they are made by Kelsey-Hayes.........