Engine and wheel inertia

[stan.distortion]

So, you're saying that with the lower spring rates the cars behave more realistically (including body roll)?

Made a big difference here, after a bit of messing around 45000 front and 35000 rear for the C7 seems about right so nearer 60% than 30%

Probably a horrendous bodge but changing cardynamics.cpp@43 seems to sort out the engine inertia thing:

void CARDYNAMICS::ApplyClutchTorque ( T engine_drag, T clutch_speed )
{
if ( transmission.GetGear() == 0 )
{
engine.SetClutchTorque ( 0.0 );
}
else
{
if ( clutch.GetEngaged() )
{
//if the clutch is engaged, force the engine speed to the transmission speed
//engine.SetClutchTorque ( 0.0 );
//engine.SetAngularVelocity ( clutch_speed );
engine.SetClutchTorque ( engine_drag );
}
else
{
//if the clutch isn't engaged, send the engine the torque from the clutch
engine.SetClutchTorque ( engine_drag );
}
}
}

Quick question, where does the wheel mass get applied to the momentum?
I have tried messing around with the mass and inertia and a wheel mass of 35 and inertia of 2.5 gives something similar to a mass of 15 and inertia of 6 but I can't find where the mass effects momentum or inertia.
cheers