Well I'm just going to go ahead and put 235/40 A/S tires on my 20" rims. Hopefully (it shouldn't) it doesn't throw a code. I can live with the slight ~1% speedo deviation. At least I can drive the car in the winter and won't have to bother with the ol' summer/winter switch in April and December.
Still in a bind about the spare tho...
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2020 Mineral Grey X2 M35i
-jay
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