My 2011 Mainstreet was ready for tires. Decided to go with Goodyear Assurance Eco Max. I got a good deal on them and installed them at my shop. They claim 2-3 MPG improvement over standard non-LRR tires. I just installed them Wednesday so I haven't really had time to see if they really work. They feel way better than the Kumhos, but they were well worn. Being as it's my wife's car I very rarely drive it (I've got an 03 Civic Si as my toy). However, on the weekends we take her car if we decide to go anywhere. Over the last 3 weeks, she's averaged (according to the on board computer) 19.9 miles per gallon. Not great, but she only works about 5 miles from home. So no Highway driving, just mostly stop and go traffic. Anyways, I'll try and update this thread with her gas mileage and also the performance of the tires. Being as it's our weekend cruiser I'm just trying to get the most mileage I can out of every tank.