The physical dimensions of the Z4 are fantastic for hot laps. For agility, the wheelbase was shortened by an enormous 20 cm. The body is a whole lot stiffer than the old Z4’s, and it’s light. Unlike other BMWs, the front suspension mounts for precision onto a special aluminum subframe. These are not the only deliberate claims.You should sincerely thank Toyota for the Z4. Toyota needed a new Supra but lacked a platform. BMW saw a deformation of the roadster market and wasn’t confident it could sell enough to justify substituting the Z4. So, the Supra gets most of the Z4’s basic engineering, which is BMW stuff. Engine, suspension and basic platform parts, and electronics too, come from BMW’s current set that’s used on every longitudinal car they’ve launched since the 7-er of 2017. The Supra is tuned and set-up differently from the Z4. Both the cars are built at a BMW-overseen line in the Magna plant in Austria.