You should understand that X6 is coming in the next years. And X6 will be positioned as performance SAV-ish vehicle, while X5 will lose this position.

Yes, X5 will still have top performance version, but whole X5 model line will be positioned below X6 performance wise.

Still the performance version of E70 X5 will be able to reach 0-60mph way below 6 seconds. But this treat will come with a price. Quite a price.

Expecting a sub-6s large premium SAV for $55k is da*n naive ...

It's like saying "Da*n, my E60 545i is slower than E39 M5". Of course it is - since one is a regular model with V8, the other performance model with V8. You are mixing apples and oranges here.

*****

Btw, are you buying a SUV for racing around? For drag racing from trafficlight to trafficlight? Wow!

But if you really want a performance SAV-ish vehicle wait for X6. X5 is not for you.