the handling has improved dramatically since I made small adjustments from the factory settings. Also i had very little expectations since i was not coming from a two wheel motorcycle.
I kept my front tires at 16 pounds and the back is at 26, the rear shock i increased to 70psi and the front shock settings I moved up to setting # 4 from the factory # 3.
I have only ridden my bike solo and I am 6'2 and weigh 225 lbs
I tell you all of this because it makes a difference.
The first time i rode the bike before these changes everything was fine till I got on the freeway and I felt it(the bike) a little squeamish in the rear, and not as stable up front. After the changes at my courtesy 300 mile check up before the 600 mile one I had the dealership do these that were recommended from westcoastspyders. At 3300 miles everything is great, oh and no problem going by big rigs. Only one time did I feel quite a bit of turbulence near LAX airport on a very windy day, I eased off the throttle 5 mph to about 55-60 and no issues.
As far as cornering, that will come with experience, as far as my limited experience I have no issues as I look through the turn, If I don't then it will become choppy. Also just like a car it is not how fast you go into a turn but how well you can get on the throttle exiting!. (learned that from high performance driving courses.)
The highest mph so far for me is 84 on the RTS and 175 in my CorvetteZo6, I gotta tell ya the 84mph is more fun and thrilling, that any four wheeler will ever be! I sold my Corvette and got the spY
Enjoy your ride, and good question.