Unless they repaved Richard B. Russell with a new mix I'm 100% positive there is gravel on it in places year round. That's why that road eats up tires so because of the mixture is eroding itself, too much gravel mix and not enough tar...then having near flat shoulders on both sides with gravel the cars tend to drop a wheel. I'm mostly talking about the middle near a couple of the look outs though. From the cliff to 180 is fine and from the last lookout to 75 tends to be ok...it's the center portion, particularly one sweeping turn on one of the hills always has gravel.
Yes, zero chicken strips with balls of rubber on not just the rear tire but the front too is good
If you go north on Hwy. 60 in Suches past the T.W.O. on the left and 180/Dales on your right it's a great 5 minute run to Gaddistown to heat your tires up for 180 (is this where you are talking about loose gravel in 3 turns?)...or you can continue 25 miles to Morganton and Blue Ridge Lake but the roads are BORING from there. Best bet is to turn around and head back to Suches and get back on the main loop.
I have a detailed figure 8 loop I wrote with mileage, landmarks, and maps in PDF form that I may post up. I just REALLY don't like making it available to people that aren't comfortable on those roads. Especially those in cars!