One of the most noticable issues that Spintires ended up with is a vehicle that drives @ high RPM, when the needle is in the red zone. Basically in real life that would kill your engine within a few days if you kept going like that. This is a very important aspect of playing spintires, driving at the right RPM settings and hearing the vehicle purr. I get very worried when driving around in spin tires knowling the engine will blow up any minute....
I've asked probably exactly this thing on discord long (relatively) time ago and this is what I've received (official source):
"Engine emulation is still the same at its core, there is still no "tension-o-meter". But there are many improvements both to the behaviour of the vehicle (tension relative to pedal input) and to sound effects (loudness relative to RPM). There are some plans for future improvements in patches too."
It has (guess by pictures, I wasn't part of comunity that far ago).
But based on what I've received (previous post) they (DEV team) already know about this problem and already did some improvements. And probably will make some others.
Right now, we can't receive more, I think.
Just wait and we will see (hopefully)...