Is it ok to mix coilovers?

[CTR Coupe]

The main time you'll get oversteer or understeer in a car is at turn in and quite frankly i'd rather have a little bit of over steer rather then understeer at this point cause you'll always have the drive and steering input from the front wheels to pull you round the corner.

If you get understeer you won't be able to turn or power out you just gotta try to slow the car down until traction becomes available again. Which could be too late if you've already gone off the track or over the edge of a cliff.

As for on power or lift off (weight transfer) oversteer. Its more likely to be weight transfer oversteer.

You're more likely to get understeer due to power rather then oversteer in a FWD car.

I guess it come down to individual driving techniques and styles.

Manufacturers always promote understeer in their cars from the factory. This is because in a cornering situation (ie understeer or oversteer), people panic and respond by automatically hit the brakes. in an understeer situation this ok as the car slows grip returns to the front wheels and you regain steering control. in a oversteer situation you hit the brakes the a chance you could spin the car losing even more control. Its a way of idiot proofing the car so people don't put it backwards through someones fence.

yes a more advanced driver will know in a oversteer situation how to control it. but for normal people understeer is safer.