We are just down the road from boomvang and would never even think of winter driving w/o snow tires. Just got our new 2010 Golf and first thing I did was to order four 195-65/15 Continental Extreme WinterContacts w/ TPMS sensors mounted on MSW alloy wheels from TireRack. 15-inch wheels and tires are cheaper than the factory 225-45/17s, narrower tread gives better snow traction, and the OD of both is virtually identical, so no speedometer issues. Came to $920, but $200 of that was the sensors. I assume your Jetta also has the same TPMS system--it has been changed for the '11 model year and sensors aren't necessary for this year's model. My biggest concern was that the TPMS wouldn't recognize the new sensors and I'd have to pay VW twice a year to reprogram the system. I'm happy to report that so far that doesn't seem necessary. Apparently as long as the new sensors are compatible (TireRack installs Siemens sensors), and the PSI is within the programmed range (around 31 PSI to 38+ PSI, I think), the system recognizes everything as OK. Hope that helps!