CALVIN LUK, BMW Z4 DESIGNER

BMW’S reborn roadster sets the tone for a new era of design language for the brand, according to the Z4’s exterior designer Calvin Luk.

“The new design language on this and the 8 Series is about minimising line work,” he explained. “The philosophy is a couple of major lines coupled with softer lines.”

BMW’S kidney grille has been designed with a new mesh, which is expected to appear on other models. Luk said the shape evokes “the 328 Mille Miglia race car”.

The Z4 also features a reinterpretion of BMW’S ‘double-round’ lights, with the units stacked on top of each other, a design motif which hasn’t been done on any BMW model previously.

Luk also worked on making the Z4 more driver-focused, fitting in with the increased emphasis on involvement.

“The wheelbase is slightly shorter but we’ve brought the driver forward a little to bring the focus back to him or her. Before, the hood was a bit too long,” he said.

At the rear, the focus was on creating a wide stance and reducing shutlines.

What were the biggest challenges when designing the new Z4?

“Every project has unique challenges but the front end tends to be the most problematic because of the required crash structures. For example, we tried to get the kidneys as low as possible but we would probably have put them even lower if it weren’t for other considerations.”

What does this car mean to you?

“The proportions were inspired by the Z8, which was one of my favourite cars growing up. We also looked at the Z3, designed by Joji Nagashima, a mentor of mine. I drive a firstgeneration Z4 and my parents drive a secondgeneration Z4, so it’s an emotional project for me.”

Have you compared design notes with Toyota given that the Z4 and upcoming Supra were developed together?

“The Supra was a really independent operation. I’ve never spoken to anyone at Toyota during the design of the Z4.”