I'd leave them on, considering where you live. Carbide studs (unlike steel) are very,very tough. If you take the Extremes off, you are almost guaranteed to cause immediate freezing rain, followed by a foot of snow. Seeing as I live in the next state over, I wouldn't want you to do that. I just put Extreme 294s on my mbt and plan on leaving them on at least until March. Granted, I'm a little bit farther north than you (MI tip-o-the-mitt) and probably get more lake-effect as well.