If I recall the C210 had a Turb Pen speed of 119kts? Obviously I shall be corrected if wrong but when I used to fly 'em (about a 100 yrs ago) I didn't much like staying above that speed in the ruff stuff as I also used to work on them, the piddly few skinny bolts holding the wings on would make a grown man cry!:-)
Nice ship to fly though & lands fabulous flap-less as long as the rwy stretches around the globe!:-) I found this out once at TW years ago, dead battery & a plane load of bikies up for a joy flight, bunch of sooks they where when they found out I had to make some sort of an emergency ldg
I flew in a pressurized C210 only once, could carry about 2.347 people & full fuel!!!!
Felt a lot more solid though.
Wmk2