THE IS300 uses a rack and pinion steering system with engine-speed sensitive power assistance. The overall steering ratio is 15.7, turns lock to lock measure 3.25 and the turning circle is 10.2 metres. The leather-wrapped, three-spoke steering wheel is tilt-adjustable only and features the automatic transmission's E-shift buttons - upshift switches are mounted on the rear surface of the steering wheel spokes and the downshift switches are located on the front surface of the spokes.