I had a set of Bridgestone Potenza Sport tires installed on my 2011 E350 and ran them for about a year. Overall, I was impressed with their performance. The ride quality was smooth and comfortable, and the tires offered excellent traction in both dry and wet conditions--very confidence-inspiring for everyday driving. That said, tread wear was a concern. By around 14,000 miles, the tread was nearly gone. While I understand that sport tires typically have a shorter lifespan, I was surprised considering my driving habits--mostly commuting with very few hard accelerations or stops. If performance is your top priority and you don't mind replacing tires frequently (especially if you drive more aggressively than I do), the Potenza Sport is a solid option. Just be prepared for more frequent replacements.