Thx for reply. Hope Tesla continues to improve on sound deadening. I compare everything to my Grandparent's old Lexus LS and have yet to sit in a car that quiet, one of those things I never cared about until I realized how high the bar can be.Where I live, there is little snow, but there are ice days where the roads are covered with 6-8 mm of ice--much of it black. Never had an issue (RWD S85). No real issue with noise because many of the highways around here have an aggregate size that makes any tire loud. (Note the new X is much quieter than the 2013 S.)