2020 Cadillac CT5-V at Lightning Lap 2021 Cadillac's big sedan is track ready and joyful. Tires: Michelin Pilot Sport 4S ZP, 245/40ZR-19 94Y TPC The high-speed left-right-left-right sequence before Roller Coaster will keep a car on the edge of adhesion. While we're sawing at the wheel like a giddy toddler in a Little Tikes Cozy Coupe, we're noting a car's tendency toward understeer or oversteer, how sensitive it is to load transfer, and how easy it is to exploit all the grip. Going through this section in the CT5-V, we feel a deep sense of connection and joy that's absent in a lot of other sports sedans.