Tire force combining review

[NaN]

Testing shows a number of RWD cars, like the 360, to be almost undrivable (I am using a steering wheel). Although the 360 wasn't very drivable before either.

On the other side we have some very well balanced cars like the LE or GTV which are doing fine.

Now, the question is: Should I push the changes anyway? Identify and document the problematic cars, exclude them from test builds and releases until they are fixed (who would do the fixing)?