I am getting a Dunlop 606 front tire (90/90x21) and rear tire (120/90x18) to replace my aging stock WRR tires. Many inmates here like the Bridgestone Ultra Heavy Duty tubes. So I thought I might try them.
However, I have not found that tube in the size of either of the two tires. Both RockyMountainATVMC and Motorcycle-Superstore via chat said that the Bridgestone Ultra Heavy Duty tubes they sell would not fit.
I must be missing something pretty basic.
For what size of tubes should I be looking?