that rim width is a tough fit. cheng shin C131-3.00 x 12 they will do just fine.override that tire and your ready for an XR/CRF100 -right Cam?
Thanks for all the info,just what I was looking for. My 8 yo grandson will be riding the bike for the most part.
I suggest the Bridgestone BT601SS in a 100/90-12". I suggest a Heavy Duty tube. I suggest using medical soap to mount it. You can get the soap at CVS/Eckerds/RiteAid....... You can get the tire from StickBoy Racing. Derek is a butthead but I like his wife.... You will have to put about 60-80 psi in the little tire to get it to seat properly. Let it sit over night if you can. Be careful and have fun. Let me know if I can help. Cam
The white creamy medical soap seems to be the best thing I have tried. I have probably mounted 1000 12" tires..... I bought a 5'x8' enclosed trailer at one time just to store 12" race tires.... ..... and my sister, and my aunt, and my cousin....... and my wife is a MLT in the lab at the hospital..... I don't mind crashing..... lots of professionals to fix me up.