I agree with you as well, but I was checking for BMGUY because he also has xdrive and claims that he can feel a steering difference. Personally I have not noticed any.

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12 550i xDrive (Dinan S4, Intercoolers, Exhaust, Springs/Shockware, Negative Camber/Low Compliance Rear Control Arms & intake on order; 3M CR40; AG M355, Michelin PSS & Tikore Ti Lugs) - Alpine White, Beige, M Sport, Cold Weather, Premium Sound, ARS, Sport Auto, Power Shades, Side/Top Cameras, HUD & BMW Apps.

13 Infiniti JX35 AWD - Midnight Garnet, Deluxe Touring, Technology, Theater & Premium Packages.

07 E60 550i Dinan S2 & Intake (Gone)

09 Hyundai Genesis 4.6 (Gone).