There's dozens of different types and variations of wheels used on 1" go kart axles. We could help you a lot more if you posted more details about which type you need...
There's lots of different styles, width's and diameters of go kart
rims. Also, some just have one hole in the middle for a single axle-nut to hold on, and then some others have 3, 4 or more bolt holes just like a car rim.
To further complicate things: some members of our forum actual mean
tires when they refer to
"wheels", some other people mean just
rims, and then some others mean
tires already mounted on a rim.
Help us, to help you. If your unsure and have questions, let us know.
You could also post pics or a link to better explain what you need too
