Yokohama's on a 2010 on a base black model bought in MA with the $750 rebate . So far 57 mpg's in 5 day's of driving, pretty amazing.
Hi All, Yokohama Avid S33. These are really quite low rolling resistance tires. The car rolls for ever and ever. My previous car was the 2006, with Michelin Hydroedges that had about 50 K miles on them. The 2010 Trim level III, with the Avids easily outrolls the old car below 40 mph. But, the warp stealth from 50 mph is much much worse. Might be the Aero mods I had on the 2006. On my warp stealth down-grade on the way to work the 2006 with aero mods would gain speed from 45 mph to 52. With the 2010, I have been starting at 47, and it barely stays above 45 mph at the bottom of the grade. Yes, I am working on flush hubcaps for the 2010 this afternoon!
The Bridgestone Ecopia is supposed to be a good summer tire with about a 30 percent rolling resistantc than some other Bridgestones. The Yokohama Avid gets good reviews for wet/winter, hydroplane management. As far as which one is best; looks like it depends on your application, preference and budget.
I live in Colorado and have the Ecopias on my 2010 that was produced 10/10. I love the dry grip of the tire and the low noise levels. I've yet to drive them in rain or snow. What makes a tire low rolling resistance? Is it the compunds that it is made of? Maybe I would be better off with the Avids, since they get a better snow rating. I know my Ecopias are taction B, or the Avids an A?
The lower rolling resistance comes from tread design. Same as a tire rated for hydroplaning where the tread channels push more water away from the tire at the road surface. To that extent, I think the Ecopia may have a narrower, shallower tread. This is not a bad thing, just a performance-driven design. The tire will still deliver excellent mileage longevity under normal driving conditions. Geez, I sound like a friggin commercial. Sorry, but I'm not recommending nor selling anything, let alone tires. I happen to run across this stuff when I shopped for tires a car ago.
No, LRR comes from the rubber compound. You need to reduce energy lost when the rubber flexes. True LRR tires use Silicates in the rubber compound (replacing the carbon black) to achieve LRR. A secondary approach is to make the tire material thinner - not my favorite approach. JeffD
Thanks for the correction on the low resistance tire. Adding silicates does lower rolling resistance by making the surface harder. I guess I'm thinking of the variations in width, thickness, tread and pressure as contributing factors to LRR.