Suspension and rolling-stock upgrades improve the Model S' handling and increase its range, too.
The idea of an electric sedan handling better than a mid-engined supercar may seem laughable to most, but Elon Musk isn't most people. He's out to turn the industry's pre-existing notions on their head. After being told that the McLaren MP4-12C could out-handle his Tesla Model S, Musk put his development engineers on juicing up the EV's dynamics. What they came back with is the Performance Plus package, encompassing a retuned suspension and bigger wheels to improve handling.
The new dampers, bushings and stabilizers are fitted to 21" rear wheels that are 20 mm wider than stock and fitted with Michelin Pilot Sport 2 rubber – the fitted to the BMW M3, Corvette ZR1 and a variety of Porsches. You might think that the bigger contact patch, while improving performance, might reduce the vehicle's range due to increased rolling resistance, but they actually enable the Model S to travel a good 6 to 12 miles longer. The package will cost an extra $6,500 over the post-credit $87,400 price of a Model S Performance, and will be offered (sans certain suspension components) for a $13,000 retrofit on existing models.