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How to Determine Most Efficient Tire
Hi guys, I'm looking at new tires and unfortunately the specs available are just not that great to compare which tire is most efficient. I know LRR is the big spec to effect efficiency, but it seems weight is the only spec I can find and even that is difficult as I have to really dive into the Google to find it.
Is there a way to compare which tire is more efficient? I know they measure LRR in kg/t, but that spec is just not provided anywhere. If it helps, I'm looking at a 265/70R17 tire although the width and height are subject to change depending on what's available. |
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Unfortunately, there doesn't seem to be a standardized (normalized?) set of data that can be used to compare LRR tires against each other. Or at least, I wasn't able to find one. I ended up going down a rabbit-hole of internet searches, reading lots of reviews and stuff.
My Prius needed new tires, but the OEM ones (Firestone Fuel Fighter) weren't readily available. And the few places that had them were charging an arm and a leg for them. Hence the internet rabbit hole. My take-away was that most of the big names (Firestone, Michelin, Goodyear, Bridgestone, etc) have fuel efficient tires. And they seem to be roughly comparable. Once again, I wasn't able to find accurate data to do a proper analysis. So this is just a subjective judgement. I ended up buying Goodyear Assurance tires to replace my worn out Firestones, and the fuel economy seems to be roughly the same. I bought the Goodyear tires, simply because they were the least expensive at the time (at Tire Rack). |
From the research I’ve done, the Bridgestone ecopias and Michelin energy savers are a huge gap above the competition by several mpg points
From what I’ve read and observed, the newest version of the Bridgestone ecopia plus tires give better mpg than the energy savers. But the energy savers beat the regular ecopias without the plus. Also the energy saver a/s beat the summer energy savers for some reason I personally switched tk the ecopias plus tires from the energy saver a/s and would say they are about the same, but slightly better mpg and better traction. Downsize is the tread life in the real world is almost half of the energy savers. |
Interesting. If you're buying tires twice as often, to save a couple mpg, is that a false economy?
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I have determined that a worn out ecopoia 442 is about as efficient as an energy saver A/S. Tires are most at their most fuel efficient when they are on the wear bars.
Now there's a new style of energy saver tire with a new tread pattern, don't know how these stack up again the ecopoia 442. These 2 tires have been the top 2 for fuel economy. It looks all testing an observation support that. |
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Here's a link to an earlier discussion I started concerning RR regulations. Ecomodder.com: Tire Fuel Efficiency Consumer Information thread There has been some movement since the last entry: California published a proposed regulation that was unworkable. Part of the proposal was a database listing the rolling resistance of every tire sold in California. They are now in discussions with the US Tire Manufacturers Association about how to make it workable. In the meantime, NHTSA has another new date for publication of their proposed regulation: Dec, 2023. I think they won't publish anything this time either, just they have since 2010! But I found a database of EU labels: Barry's Tire Tech: EU Tire Label Database This database supposedly was last updated in 2021. I don't know how complete it was even back then. |
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If "+20%" were true for the ecopoia plus then they would be about equal to the energy savers. But the energy savers have been updated too as of last year. |
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