Video: Which is faster on track, the BMW Z4 M40i or the Toyota GR Supra?

https://www.youtube.com/embed/hZX21WU51f8?si=wMhbbxZHZG1fWcme

Just how quick is the 2025 BMW Z4 M40i on track compared to the Toyota GR Supra?

We took the new Z4 to the Grassroots Motorsports official test track, the Florida International Rally & Motorsport Park (FIRM), to find out.

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Chris Tropea
Chris Tropea Associate Editor
3/6/25 9:22 a.m.

Besides the performance, the color on this car is really eye-catching in person. 

theruleslawyer
theruleslawyer HalfDork
3/6/25 9:39 a.m.

It would be interesting to see one of these vs a base-ish boxster. Its the closest car I can think of. It certainly would be high on my list if I lived somewhere warm enough to a vert to make sense.

Colin Wood
Colin Wood Associate Editor
3/6/25 9:50 a.m.

In reply to theruleslawyer :

I definitely see the crossover there–a sporty, luxury-ish convertible that's also available with a manual.

If it helps at all, a first-gen Boxster S set a fastest lap time of 1:26.98.

Chris Tropea
Chris Tropea Associate Editor
3/6/25 11:20 a.m.

Our project 2014 Porsche Cayman also set a lap of  1:25.14, not a Boxster but similar in the same way as Z4 and Supra. 

JG Pasterjak
JG Pasterjak Tech Editor & Production Manager
3/6/25 12:16 p.m.

Someone made the comment on the Youtube video that BMW sold close to 1500 manual Z4s last year and I was honestly stunned. I figured this would be a mid triple digit take rate, but those are pretty strong numbers.

VolvoHeretic
VolvoHeretic SuperDork
3/6/25 2:46 p.m.

Which one looks better? Is there such a thing as too fat of a steering wheel? What's the thickness of that thing?

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