Originally Posted by andrewwynn

Very very normal. We joke about It in e53 circles that's how we get a workout. Apparently BMW didn't add variable boost into X5 until E70.

If you hear moans when steeing especially when cold then it might be low. Also with prescribe you can one hand steer. Maybe I'll make a tutorial. I use a trick I learned with my Z28 where I could steer from center to lock without moving my hand. I've transferred that knowledge to e53 and if helps a lot.

It's possible the 06 did have variable boost steering I'm not sure when that became an option. I do know that everybody that drives my car is pretty sure the power steering is broken.

I love it because it gives me great road feed back taking 270 off ramps at 50. It's fun watching sport sedans disappear from my rear view when they started on my bumper.