rim size or tubesize ??

[bazmaster03]

hey does anybody know what the size of the rim or tube size is ? im at school and didnt have time to look at it this morning and i need to get or order one new tube ....cuz it kinda blew out of the tire a bit and now my tire is flat .....i dont kow how the tube sliped out of the tire bead but i did ....good thing my tire was a 6ply i managed to ride it back home i had like 50 miles to go back home

IT WAS A LONG RIDE

i didnt want to go fast to not hit the rim on some rocks ...


any input will be apreciated

 

[bazmaster03]

oh i forgot its the rear tire on a 1990 kdx 200

 

[glad2ride]

STOCK IS:

1.85" x 18" is the rim size. Tube size is 4" x 18" or 100/100-18.