[sokoloff]

160 kts (around 140 indicated) does not seem like a remotely appropriate airspeed to join a pattern full of Cessnas in closed traffic.

SR22 Vs0 is 59 knots (call it 60 to make the math easier). 1.3 x Vs0 is a reasonable "over the fence" speed, so 78 knots (call it 80) indicated would be good on short final, maybe 90 on base-to-final. (Instead, they were descending and thus accelerating slightly and hit 169 knots on the base leg.)

Bombing into the pattern over 50 knots faster than appropriate (70 knots faster than the traffic you're following and 40 knots faster than the much larger and on-profile Metro on the parallel) might be contributing, but certainly suggests to me that the Cirrus crew was behind the airplane.

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