Also standard is the Lexus Smart Access and Engine Start System (the start button), ten-way power front seats with lumbar, a tilt and telescopic steering column, and a stereo system with ten speakers and a six-disc CD changer. Options include an active stabilizer bar and run-flat all-season tires combo ($3,400), a Pre-Collision System (PCS) with radar cruise control ($2,850), and G-Spider alloy wheels ($1,375). You can also opt for run-flats without the stabilizer bar, which will set you back $480 for summer tires and $400 for all-seasons. Add a rear spoiler ($200), and then get to work on the inside, with a navigation system ($1,900) and a 14-speaker Mark Levinson Sound System ($1,780).