Handling is enhanced with a sport-tuned independent short- and long-arm front suspension and an independent multi-link setup in the rear; standard front and rear stabilizer bars; traction control and StabiliTrak stability control systems; and a limited slip differential. Speed-sensitive steering, with a quicker response than offered in the regular STS, further aids overall control. Collectively, this package has led to a 15-percent increase in ride stiffness, a 35-percent increase in roll stiffness, and a 17-percent decrease in understeer. According to Cadillac, the 2006 STS-V pulls 0.87g on the skid pad, which, not so coincidentally, is the same figure reported for the 2006 BMW M5.