This sounds simple, but happened to me. Won't be a problem if you have a garage for your X. If you happen to park in deep snow, the snow coming in contact with hot rotors will melt and then freeze onto your rim somewhere. Depending how much ice gets formed you get varying amounts of vibration. Just something to check if your truck sits outside. A pressure washer with hot water will take care of it.

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Current-

--2003 X5 4.6
Estoril Blue
Black Nappa leather
rear air bags
OEM nav
OEM hitch
OEM cargo liner
Black housing SPYDER headlights - Evo-XR projectors

2017 GMC Sierra, 7K miles...
2017 GMC Sierra, 60K miles...
2015 GMC Sierra 280K miles...
2011 GMC Sierra, 500K miles...

Previous wheels:

--First love~
1969 Chevy C10, 396BB bored, 3 on the tree, Black ~SOLD~

--2011 Chevy Silverado LT 2500HD CCSB, Black, 250K miles ~SOLD~