One thing to point out here. Many many people run with VERY long 1st gears and this in itself is the cause of clutch burn. I have managed to do 10+ race starts in GTRs in LFS back to back and NOT burn a clutch out.
Also if you use the Auto clutch I would say its not the actual clutch but the auto clutch as it does appear to slip too often, this has been mentioned as the probably fault before.
I use manual and hence have real control over it so do not burn the clutch ever. Also make sure you put the clutch in the instant you lose control.
As to tyre heat and how F1 drivers do not have same heat issues.... Do you REALLY believe that F1 drivers are as hard on their car as almost all LFS drivers. An F1 driver will never push their cars as far and hard into slip, in fact they try to avoid in ALL situations. Their drive to the cars limit, NOT over it and their EVERY move is checked and they are coached constantly about even the most tiny mistake in their technique when not in a race.
An F1 car is NOT easy to drive right, do not believe that ANYONE here is really a good enough driver to be even able to drive one IRL at the pace required to even keep temp in the brakes and tyres. You will NOT BE however much you might think you are, most overdrive because fear is NOT a factor in LFS! The edge on an F1 is VERY thin. Step over the edge and you are cooking the fragile tyres if you could keep the car from biting and putting you in a wal. Drive too soft and the tyres and brakes will just not be hot enough to even work. Just look at when Hamster tried to drive an F1
Its far better looking at the cars we all have experience in. Use the Road setups from Bob and then look at your replays and compare to driving IRL. Its not 100% as I have said before BUT its not far off.