it can be

those weights are put on to the wheel to make it almost perfectly balanced, so no one area of the wheel/tire weighs any more than another...these weights are small, anywhere from 1-70 or 80 grams, but they help a lot. Taking the weights off could create vibrating at speed and, eventually, possibly even damage to some of the rotating parts...

so I say get them wheel weights back on where they used to be or, take em somewhere to be balanced