For cold and ice i bought a set of the p zero nero all seasons in 245/50/19 on 19 DR37 wheels. Added TMPS and they fit beautifully on my 2012 45th 2ss 6A convertible. Overall diameter is within .03 of an inch of stock 20 which was important to me. Total cost was under $1450 including shipping and road hazard warranty. I live in Black hills of south Dakota (foothills and mountains) and they were tested in moderate conditions yesterday. Interstate driving northwest from rapid city to spearfish, SD, distance 50 miles elevation rising the whole 50 miles. conditions were: 9 pm, Cloudy, fog, ,dark, 27 degrees, wet roads and medium to heavy snow falling , roads were just starting to accumulate snow, by this I mean you could just start to see the tracks of the cars ahead of you. No problem at all on interstate driving 65 mph, but this was a first test in this poor of conditions so I was cautious. When I got to my exit, I pressed on the brakes HARD, but no traction light came on and no sliding though intersection has some wet snow maybe 1/4-1/2 inch. At stop light in town with 1/4 to 1/2 inch accumulation on street and 1 1/2 inches on sidewalks, no sliding. I was very excited with the performance in this situation. With the original p zeros I would have been in the ditch. Competition dealer wanted to sell me snow tires that were almost 1/2 inch taller than stock with 19 inch wheels and $550 more. Didn't want to spend $750 more for Continentals. General tires were backordered, so I bought these. I wanted these tires for this exact situation that I had last night. Driving in sub 40 degree weather, capable very light snow and wet roads if the situation arises. I don't want to go in deep snow on purpose with the camaro. I have over 500 miles on these tires already in sub 10-40 degree temperatures on wet and somewhat icy roads and so far not even the traction control has come on. I am very well pleased so far (knock on wood).