To me it sounds like both lead to what you feel. A cause and effect...
The summer tires at 25F have much less traction. In a sharp turn, the inside rear tire kicks loose for an instant. The M Differential has to immediately compensate and sends power elsewhere. That's what you feel.
In warmer weather the tire continues to grip and the differential can smoothly transfer rotation speeds as required.
That's my theory at least.....
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2020 X3M non-comp, Alpine White over black : Exec Pkg, ventilated M Sport seats, 20"s
2020 M2 Comp, Sunset Orange/Blk: Orange stitching, DCT, exec pkg, bicolor rims
Gone '18 M550i, '16 X4 M40i, '15 M5, '13 X3 35i, '12 335is, '11 X5 50i, '09 Z4 35i, '08 550i, 06 X3, 06 650i, '02 M5, '99 540i
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