Although the LS’S handling is flat, fluent and relatively agile at road speeds, its dynamic flair doesn’t survive indefinitely when it’s driven quickly on a road as testing as the Millbrook Hill Route. For a big luxury saloon, that’s no great criticism; we’d expect the poise and handling accuracy of an Audi A8 or Mercedes S-class to deteriorate in a very similar way, although a BMW 7-Series or a Jaguar XJ might stand the test a bit better.
The LS can carry plenty of speed through corners and stays balanced, flat and on line until you’re pushing harder than you ever would in such a big car on the public road. When the handling precision fades, the car stays fundamentally stable, slipping from the front axle first, but it can run wide quite quickly if you’re too ambitious with your cornering speed. Luckily, the powertrain isn’t likely to encourage you to pour on speed too quickly as you pass an apex.