I drove while I was still non weight bearing and never wore the brace they gave me. I figured that 9 screws and two plates were probably going tonbe sufficient. It never hurt when I drove so I thought it was fine. Had to get to work somehow! I'm sure it would have been reallly reallly bad if in had to slam on the breaks, but I tried to exercise extreme caution. For me, I loved driving because it was the only way I could go wherever I wanted without having to worry about those stupid crutches! I felt free!!! My car is stick, too, which is fun to drive
I guess it's just up to u and how comfortable u feel taking somewhat of a risk. let's be honest tho...those braces don't do anything if u have a bunch of hardware holding your knee together. My doctor told me that he pretty much wanted me wearing it so people were more careful around me because it would let them know that I had a serious injury.