I have an 04 LS and found it to be remarkably effective in snow this past winter, even with the OEM all-season radials. The traction control has a special "snow" setting to prevent your rear wheels from slipping even if you stomp on the accelerator, and the stability control does a great job keeping the car going where you want it to go even, at higher speeds. Using snow tires can only make the car better in the snow. The biggest problem relative to an SUV is the low ride clearance, which means you *will* get stuck when the snow accumulation is sufficiently higher than your ground clearance. But you should be okay in your LS if you stick to plowed roads.