Cars Strange problem with 60s F1 cars.

[Gilles75]

I have made the AI lines for two tracks, both tracks have hairpins. all the AI cars I've tested drive the tracks without a problem but for some strange reason the 60's F1 cars brake too late and crash in the hairpins EVERY single time. This applies to the kunos Lotus and the F1 60's mod. Is there a reason for this? As I said it literally is only these cars that cannot take the hairpins, I've even tested the AI in faster modern F1 cars and they take the hairpins perfectly.
It's a shame because the two tracks I've been working on (Halle and Dessauer Rennstrecke) are made primarily for me to race 60s F1 cars so I can relive my GPL glory days in VR.