your talking about Thunderbolts Way?? Its a favorite road for motorcycles, windy etc.. we had some huge weekends up at Walcha/Oxley and home Thunderbolts.
it can be done, but I'd avoid travelling thru there on a weekend.
http://en.wikipedia.org/wiki/Thunderbolts_Way
' a total length of about 290 km (180 mi) (from Gloucester to Inverell), it is very hilly and winding as it passes through the very scenic Great Dividing Range cutting the distance between Newcastle and Brisbane by about 70 km (43 mi) (together with Bucketts Way from Twelve Mile Creek to Gloucester). It is also very popular with tourists, including motorcyclists, as it offers many pristine picnic and fishing spots. Riverside camping spots are available at Gloryvale Reserve and Bretti Reserve. There is also a picnic area, with toilets, near the Barrington River bridge.'