i used this on one of my rims that was flat and since i have a blown engine, i can't drive the car with the rims on to spread the foam stuff that's in the tires. So....i heard that my wheel will be off balanced, what does that mean? will my tire be like wobbling while i'm driving? I tried rolling my rims by pushing them around to try n' spread the foam stuff in the wheels for about 10 minutes.

Where is the tire leaking from? Take it somewhere to have it repaired, it should only cost $10 if you cant do it yourself.