on my nc30 im running a new Bridgestone BT020 160/60zr18 on the rear and a BT014 120/60zr17 thats just about had its day on the front, so i have bought a BT012 120/60/17 to replace the front one , will this tyre run ok with my rear,
im not doing track days or owt like that just general riding to and from work, i do like to thrash about at the weekends from time to time tho , anyone had this tyre setup ? or know if they will run together ok

i don't see any reason why not, many people run totally different manufactureres and have no problems.

From what i've heard / read about / tried I tend to stick to at least the same manufacturer.

I have BT45F and BT39R on my NC24.

its ok ive found a place on stinkbay selling them and says its compatible with my rear plus 3-4 others so all kool , like you said should be kool if its same manafacturerererer anyways