125-200cc CR125 rear tire sizes

I've tried a 110. It made the bike a little slower to get back on the pipe if you mess up and it didn't seem to hold a line as well in the corners. Went back to
a 100 and stayed on them since.

I would guess since they had them laying around, they used them. I've used up to a 120, but the 165 will pull it

A 1.85 rear rim would be better, but they seem to be headed for extinction. Presumably it was easier for Husqvarna to spec every one of their bikes with a 2.15, rather than having a unique part for the 125.

FWIW, my 150 drives a 110/100x18 without drama. I haven't found a 125 that's not happiest with a 100 (rather than a 110) rear tyre.

I run the 100(120 size in Michelin) and find they work good but grip goes away quick as it wears. Sometimes wonder if a worn 110 would work or maybe a 110 hard terrain tire that would give a little more slip.
I am about ready to try a Motoz, hey Kelly, do you still sell them?