It's for the best that the 2020 BMW Z4 convertible, particularly in six-cylinder M40i guise, is essentially a decapitated 2020 Toyota Supra, a car that was co-developed with the BMW and shares virtually all of its mechanical identity. The latest Supra might not be enough of a Toyota for loyalists, but it is no slouch. There's a lot of performance baked into the new platform to bolster the Z4's sports-car credentials. We'd be cool with BMW making the Z4 drive even more like the Supra.
