Can Multiple Tweens Play Fluidly?

I am wondering if there is a way for multiple tweens on the same part to run one after another without slowing down at the end of each one. For instance, I wanted a circle to spin continuously for two whole rotations. Supposedly, the only way to do this with tweens is to have it rotate 180 degrees, 4 times one after another. The problem is that it slows down between each 180 degree turn. Is there any property or something with tweening that can work around this?