what are the specs on your winter wheels? You may need to put spacers on to make them clear the calipers, did you use oem bmw 18's for the E53? Those should clear. I'm pretty sure if you were rubbing the calipers on the wheels you'd know it LOL, it might be close though.

The electronic brake imbalance code I wouldn't worry about, we always get it when scanning.

The transfer case code I might worry about, you might have an actuator motor that's going bad. Can you get an official scan with DIS? those codes are kinda generic

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2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards