What exactly do you mean by 'excellent high performance'? By definition there really is no 'high performance' all season tire. All season tires are not high performance in any category, no matter what the companies tell you. Summer tires will always perform better in the dry (a halfway decent street set will perform better in the wet too) and winter tires will always perform better in the snow/ice/freezing temperatures. All-season tires are never 'high performance' in anything, but rather a somewhat mediocre compromise in everything. They will never be able to offer the performance that season specialized tires will.
As established already, I am the resident BMW auto-crosser :P
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Well as stated by Sport Cross earlier in his thread, he was having trouble with his car because of the snow & because it does not snow much where he is was wondering if it was necessary at all to put specific winter rubber on the car. I suggested a 'top shelf' high performance all season that should do the job. You haven't told us anything we did not know already with regards to actualy summer tires & winter tires & their specific functions.......some don't need 2 or more sets of wheels & tires, nor do they want them because of various reasons. Sport Cross did not mention anything about 'auto-crossing' either so I don't know exactly what point you were trying to make with that comment as it had nothing to do with the subject at hand.
Also established already, I am one of the tire 'advisors' for both LOC & CL :whistles: :P There are many 'all season' tires in whatever category you want them to be classified as that will perform a more than admirable job to get one through winter driving conditions without much fuss. If the weather is that horrendous out....even with winter rubber & it's not an 'emergency', then why go out at all? :whistles: Exercising good common sense sometimes is better than any tire ever made no matter how good the traction is. :whistles: ;)
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I made the post 'cause one of my pet peeves is when people call all-seasons "high performance" ;)