Did changing the track affect the ranking of the cars you tested?
Here's the difference so far.
1:03.627 - Alpine A110 1600S
1:03.870 - Mazda Roadster S (ND)
1:03.881 - Toyota S-FR
1:05.780 - Suzuki Swift Sport
1:27.023 - Volkswagen Sambabus Typ 2 (T1)
1:11.655 - Alpine A110 1600S
1:12.346 - Toyota S-FR
1:12.379 - Mazda Roadster S (ND)
1:14.213 - Suzuki Swift Sport
1:34.105 - Volkswagen Sambabus Typ 2 (T1)
At Tsukuba, the Alpine seems to be significantly faster than the Toyota and Mazda. The Swift is down by 2 seconds at both tracks, and the Sambabus finishes around 20 seconds after it.
0:58.969 - Nissan Skyline GT-R V-Spec II Nur (R34)
0:59.681 - Subaru WRX STI Type S
0:59.841 - Toyota Supra RZ
0:59.930 - Mitsubishi Lancer Evolution Final Edition
1:00.667 - Honda Civic Type R (FK2)
1:05.352 - Nissan Skyline GT-R V-Spec II Nur (R34)
1:05.733 - Mitsubishi Lancer Evolution Final Edition
1:05.939 - Subaru WRX STI Type S
1:07.063 - Honda Civic Type R (FK2)
1:07.476 - Toyota Supra RZ
Now this is interesting. R34 is still king, but the Evolution is now faster than the STI and the Supra. And the Civic Type R is faster than the Supra, too.