I called my local motorcycle shop and theyll only sell me BT45's, AND only in a 110/130 setup. "for safety reasons" he said. . Time to take my business elsewhere.
Is this a common excuse? I understand liability issues. Doesn't mean I have to like it.
I don't think it has anything to do with liability, and everything to do with ego. They likely think they know what's best/safest for your bike, so they'll only sell you what they think is the best/safest. I'd go elsewhere or just order from parts411. Or at the next shop, don't tell them what bike you ride, just order the tires you want.