tire/rim size question

[400extracc]

k, i have stock rims with after market tires, and they keep on comming off the rims...

stock size is for rear is 10-9.

i purchased 10-8 itp rims. are these a better size??? do i have more options with tires????
thx

[JOEX]

The diameter of the tire and rim have to match to work. You are alllowed some leeway in the other measurments, width and heigth.
For example: stock tires are 20x10x9
20=overall height
10=tread width
9=bead diameter

Stock rims are 9x8
9=diameter
8=width

What size tires do you have?
I'm guessing the beads weren't set correctly when they were mounted on the stock rims:ermm: Depending on the tire I think they need to have about 30 to 40 pounds of pressure to seat. It should say on the sidewall.

Joe