I've previously driven the DB11 overseas, and could claim this as the all-important test of whether it works equally well on local roads.

But who cares, really? No Aston aficionado is going to be turned off by the news that those big tyres produce a lot of noise on certain highway surfaces (true), that the ride is too thumpy over our patchwork city streets (arguable) or even that the new Aston Martin V12-powered coupé is likely to give you scurvy (probably false).