Toyota is confident the MK5 Supra will easily achieve a 7:40 lap time on the Nurburgring. That’s 15-seconds faster than the new BMW Z4 and well ahead of the MK4 Supra. Estimates put it around the mid 8-second range.
As the MK5 Supra roll out is in full swing, we’ll learn how its lap times compare on other tracks like the Fuji Speedway, Tsukuba and Laguna Seca. Ultimately, another benchmark to gauge how good of a successor the MK5 is (and there are many). Performance specs are close but separated by some key characteristics that give it an advantage. The B58’s beefier powerband being one of them.
Disadvantages from all the BMW parts sharing and other possible flaws brought on by this partnership, will also come to light with enough testing. Which can later be followed up with the abundance of aftermarket options we’re expecting to follow. So far the chassis has been highly praised under both street and track testing, mostly by automotive publications.
Comparing both models in factory spec, the MK5 will be superior in nearly every way, over 20 years separate them. It's part of the business model.
Although, the MK4 does remain unmatched as you move beyond numbers and are reminded its platform. Something the MK5 will never be but exists today because of its legendary predecessor.