Rear swaybar suggestion

Well, I have the ST 35/25 sway bars on my car they are SOLID. I plan on keeping the front bar which is 35mm Solid, but i want to swap out the rear bar for something smaller. I have found that the rear tire will come up when i go around a corner hard and its really scary to be blunt. I want a smaller bar but i dont know how small to go. Can anyone help me out?

If you have stock springs, then I would either recommend the stock 19mm bar, or the 21mm 1LE bar.

I have stock springs, Bilstein shocks, the solid 35mm ST front bar, and the 21mm rear 1LE bar. I like it.

If you don't have your stock 19mm bar, and want one, I'll sell you mine, plus the stock endlinks and bushings real cheap.

Dan