I don't disagree that there is probably room for improvement and the lack of forward burnouts being a symptom of something with the C3. But it will always spin the tires a lot more going reverse, because of what azaris said. And it probably doesn't matter that much if the track is green or well rubbered when you do that, because the more it accelerates in reverse, the less it will grip due to the driven wheels unloading. It's the opposite when launching an RWD forwards. Load increases and (depending on the tire) turns to more grip. The rear squats which softens weight transfer and keeps increased load on the rears for longer and smoother. This does mean a lot of grip, but even so it's suspiciously grippy in your situation I agree. I won't even guess what it is, cause it could also be the driveline eating away that initial breakaway torque. So rather than engine inertia being sent to the rear tires, it's lost in clutch slip and other driveline losses... Or any number of other things together. It's easier to overwhelm even grippier tires when turning. And it would also depend on the tire type. Road tires just can't multitask all that well compared to slicks. I've been playing around in BeamNG a lot and sometimes a few percent more or less something can make a major difference. And yes rubbered drag strips are far better for launching . It's certainly not a perfect sim, but it is physical and cars are very configurable on the fly.