Active Steering = Excessive Tire Wear?

[jotarver]

I am new to this forum and would like to thank everyone in advance for any tips/info/advice that you may have. My wife and I are close to ordering an X5 4.8i. The only option that I am uncertain about is the active steering. I have searched the forum and am familiar with the concept.

I have not yet driven an X5 with the active steering because my dealer does not have one with the option. They have offerred for me to drive a 5-series with and without the AS, but in my opinion that is not comparing apples to apples. Would a test drive in the 5-series be representative of the X5 with AS?

My salesman does not prefer the AS on the X5 and tells me that tire wear is significantly greater than for a non-AS equipped vehicle. Is this correct?

I don't want to beat a dead horse but if you have any experiences that you would like to share with AS and/or AS causing excessive tire wear, I would appreciate the information.
Thank you!