And what to do about it?

This has been a problem of mine and I am sure others for some time.

The car understeers on turn in and mid corner then has oversteer off the corner. When I check tire pressure and temps the rears are normally higher than fronts indicating the oversteer. Adjusting the oversteer makes the understeer worse and adjusting the understeer makes the oversteer way worse. I have this problem in multiple types of cars(Ztype, Trainers,etc...), all rear drive ones though. I usually setup cars with very soft setups so I usually run the lowest front sway bar and lowest springs available in the setup menu. Mainly Rfactor cars I am talking about so it is not a matter of type of tire front and rear.

So my question is, Is it the setup of the car or is the driver?

Any and all comments welcome!

This is where the dampers come into play. Slow damping to be specific

First, mid corner handling you can leave up to your standard suspension setup. Springs, ARB, etc are kings of mid corner handling. Since dampers require suspension to be in motion and by mid corner, there is little motion going on as all the weight has already moved/settled.

Corner entry is the domain of two damping areas; 1) The front bump settings, and 2) the rear rebound. Your example says that you are under steering (not steering/rotating enough) which means your front tires are not getting the grip they need to make the turn. Assuming you have ruled your driving out as the problem, what you need is to manage that weight transfer with the dampers. Lower settings allow the weight to transfer faster. The quicker that weight is allowed to transfer, the quicker your front tires will reach maximum grip (also quicker it will exceed grip if you overstep yourself). So, soften those front bumps to let that weight transfer plant those front tires at corner entry. You may also go the opposite route with your rear damping... complete opposite. As the weight transfers forward the rear is in rebound state. Adjust the rear rebound to REDUCE some of the grip. How? By increasing the rear rebound rate. This will NOT allow the rears to conform with the track surface as well (under rebound only) and in effect pull the rear tires off the track slightly... reducing grip. Now your car will turn

Again, mid corner is all up to the other suspension components.

Over steer (turns too much) on the way out? Same as above but in reverse; 1) Rear bump settings and 2) front rebound settings. Reducing the rear bump will allow the rears to have grip quickly... when you need it. Increasing the front rebound will reduce their grip and allow the car to stay in line.

Michael, grab the setup developer worksheet. It has a section on this very subject. You say, "under steer on corner entry" and it says "try this and this and this"

I think Tim is right, damper settings (and possibly driving technique) are the causes.

Try this article for a shock setting explanation. http://www.projectroad.com/content/view/166/44/

Good luck.

Agree with Tim; low-speed damper settings are a good spot to look for improvements.

You might also look at the diff settings. I tend to prefer lower lock and preload settings, and usually go as open as I can without inducing really uneven tire temps and wear. Higher diff lock can bring about the entry understeer/exit oversteer Michael's talking about. Car pushes, you drive it in harder and then get snap oversteer on exit. My experience is that lower settings seem to smooth out the transitions.

Might be worth a look...

Thanks guys for your input! Will keep working away at it.