I agree. I had ContiSport Contact tires (215 40ZR/17) on my Volvo T-5R and they were absolutely awful. They were loud, had terrible wet traction, only mediocre dry traction and went flat ALL the time. The only plus was that they easily lasted over 25K miles which is great for a Z rated tire. They probably only lasted so long because the rubber was a harder than average compound. That would explain the lousy grip.

Alex

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1983 300D (parked for four years)
2012 VW Sportwagen TDI Manual
2001 Miata SE
1962 Chevrolet Corvair Rampside