For the last two winters here in Maryland, I've kept my ultra-high perf. tires on and to be honest, it's been a terrible experience.....even with DSC. For the most part, I've chalked it up to "Bimmers are bad in the snow....even if it's only an inch or two...". But this year, I've decided to purchase some all-weather tires and see if there's a difference. Any suggestions on a good brand and where to buy them from? Also, if anyone has all-weather tires and has used them in the winter, let me know what you thought of your cars performance.