I know stock sizes are as follows for the nc30

120/60/17 front
150/60/18 rear

i am going to buy the bt014 150/60/18 for in the rear but the bt014's dont have the correct front size. so my question is should i go with the BT003 or the BT016? I have no experience with either of these fronts. I dont mind how quick the tires wear i just want something that will handle the low turning the nc30 can handle. i've never put two different model tires on a bike before either is this bad??? Bike will never see rain either so that doesnt matter or track use just sunday driving around town mostly...

thanks
jason

have you come across / considered BT090s front and rear?

on the BT090, although they are soft and will flatten quite quickly, but the grip level is oooohhhhhh

You could try conti road attack tyres, i know a few people that use them and say they are as good as any pirelli they have tried.
I think Michelin do a pilot road 2 in an 18" too might be worth a look.