I'm pretty sure that most of us already know the function of tyre warmers, but it's never too much to explain it a bit, so.

Tyre warmers in LFS are only avaliable in "Hotlap" mode in the main menu, their function is that once you get out of pits, tyres will be at specified temperature so they have better grip and temp in order to get a better lap time.

Now, tyre warmers outside "hotlap" mode could be quite useful, and since some servers have hotlap charts these could also be a function in multiplayer mode.

Just like other options when hosting a server, tyre warmers could be a optional feature.
For example: "Adjustable Tyre Temperature: [yes] or [no]

i feel like this would be more realistic aswell, since some classes (F1 or GT3) use these outside of qualifying.

Maybe even add it as a pit function! in F12 you can specify the tyre temperature you want after a pitstop!

i would give visual examples if i knew editing lol.

I agree, I think it was missing, I felt that when I participated in several GTR championships before official mod support was launched.

Interestingly more and more series are moving away from tyre warmers IRL or at least turning down the base temperature.

The devs are aware and I remember Scawen discussing this before for the new tyre model including the idea of having a warm-up lap.

I think a warm-up / formation lap is a good idea - it adds to the tension at the start, there is a skill to warming the tyres and also the risk of incidents due to aggressive warming tactics!

Of course we will need an AI safety car that takes the field around at the appropriate speed for the class...