Dedalos: You can dive anything to any speed. I dive the Ki84 a lot. Only problem is I lose rudder (Ye gods, WHY the rudder?!?!) if I go too fast. It can go much faster, I just back off because I want to be able to get kills (i.e. I need my rudder). The Spits have a G-related bug I think. They were shedding wings like MAD the day they came out. A little while later they "fixed" this, but I think there's still a bug. I think it's there on the new 109s as well (they don't lose the wings, but the bug is there). Best guess: massive G-spikes on both sets of planes when there really shouldn't be. I've only ripped wings off a spit16, and I wasn't even blacking out when I did. It was a high speed dive and I eased out of it gently as a lamb, then SNAP no more wings.
Levi: Okay, I admit I was thinking about prop planes only. I think the 262 dives better just because it's faster most of the time, and already at a high speed when it dives, to begin with. If you're same speed and same alt and do a dive test I wonder which would pull away, a La7, a p47, or a 262?
So let me correct myself by saying "For Prop Planes, diving means nothing"