FWIW.....
For once, I have done a little preparation as this car group is a total unknown for me. Plus I recall struggling with the '67 F1 cars a few seasons back and wanted to get a handle on these cars before I set about destroying the scenery.
My plan is to evolve/stumble across a setup that simply feels stable and reliable. I have only downloaded and run on the Nogaro track as it seems to be a good testing ground with a good mixture of corners. If I can get the chassis to my liking here then hopefully it will be a case of copying it across to the rest of the circuits as we go to them, and allow for gearbox tweaks and minor suspension adjustments to suit? I might be faced with learning a few tracks as we progress, but that will be much easier if I have a car that drives without any nasty surprises!!
I tried Geoff's suggested diff settings and, maybe because the rest of my setup changes did not fit with them, I returned to what I already had. One thing I did notice re tyre wear, is that the diff settings appeared to have quite a marked effect...especially on the front left if I pushed through some of the longer corners. With the "wrong" diff the front left would go red/orange after 2 right handers at racing speed and show a noticeable decrease in available rubber
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My current evolution of the setup has shocker settings a long way from the default and I have gradually reduced the rear roll bar to try and counter that deadly oversteer on corner exit. It still happens if I unsettle the car in any way around mid corner, so I am wondering if it is a clutch/preload issue?? I also wonder if I need to play with gear ratios to reduce the grunt I am trying to force through the rear end which appears to break the tyre adhesion and initiates the rear end slide ? That Alpine engine sounds like a biscuit tin full of broken spanners, but certainly has some torque !!
I have not invoked the AI ( never bother with them anyway ) and am concentrating more on being able to string 3 or more laps together, on an empty track, at what feels like 95% limit of my ability. From Geoff's comments, and what time I feel I am losing at each corner, I am guessing that the AI would be around the 1:30 lap time which is somewhere I won't be going anytime soon!!!