If I can to add my experiences of low-time-low-experienced-high-performances-plane-now-happy-SR22-owner.
I took care a lot all the discussions here for to obtain more experiences (I never spend so well so low amount of money for joint COPAs benefits), and I can say that some post upset me thinking to fly soon one Cirrus because of few post like your…
Is happened later that I finally started to fly my Cirrus with a good instructor in my side (Matt McDaniels), and from the beginning to 20 plus of flight-hours, untill today (>64h in SR22), I’m been and still now I am really surprised with myself of do not experineced nothing of the bad experiences that seems I read here and that seems affected “all Cirrus” airplanes.
I found/find easy to fly, absolutely reliable/responsive as so as what you did what he (or she-the airplane) did; I never experienced bad shimmy (maybe just a sign of it few time absolutely easy to recovering), but maybe 15% of bad shimmy that I experienced on Cessna 172, Partenavia P66/64and68 or on SF260.
All this with low experience, being a “normal person/pilot”, maybe just with some good suggestion/skill that Matt McDaniel gave me from the beginning, and doing some mistake (probably little because I’m still here…) anyway sometime.
So, ok, where is the “moral”?
The human nature is to talk bad of everythings, something that I refuse to do since many time ago, liking to think and talk of the good things, and spending all my resource for try to solve the badone.
Here you will find people that speak “of some own not so good experience” of somethings, more than speak well of somethings else.
I’m sure that of over 850 (?) flying Cirrus in the sky, we can’t to label Cirrus as “with really bad shimmy attitude” for 5, 10 or 15(?) "shymmy post, because maybe there are out there (like me) 700 pilot with no shimmy at all experiences.
If this exist, try to concentrate your attention on the torque of the nose whells, tire pressure, landing technique… or something else.
Just my really 0,00002C suggestion.