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Old 03-23-2011, 02:23 AM   #1 (permalink)
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LRR tires currently available?

I just found this new tire in the Bridgestone Ecopia series:
Product Details: Ecopia EP422

I also learned recently from a tire shop about a Kumho brand "Ecowing" series.

Anyone know a good place to find the rolling resistance coefficient ratings for these and other tires?

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Old 03-23-2011, 06:23 AM   #2 (permalink)
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Although they don't list the coefficients directly, Tire Rack allows you to filter for only LRR tires after you have selected your tire size.
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Old 03-23-2011, 12:34 PM   #3 (permalink)
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Thanks for this response instarx. I have been to the tire rack site, but the problem is that there are LRR tires and then there are other LRR tires, as an older listing of rolling resistance coefficients on this forum shows. I'm hoping to learn where to find such data for more recently marketed tires, such as the Bridgestone Ecopia ep422. That info should be available to the public somewhere, eh?
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Old 03-23-2011, 04:00 PM   #4 (permalink)
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i think Consumer Reports is due (or overdue) to rate all the LRR tires so we can see an unbiased evaluation.
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Old 03-23-2011, 04:08 PM   #5 (permalink)
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Quote:
Originally Posted by California98Civic View Post
That info should be available to the public somewhere, eh?
Yeah, it should be. However, it usually isn't.

The best thing you can do is google about the tire you want and hope someone has tested them against some other tires.
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Old 03-23-2011, 04:18 PM   #6 (permalink)
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yeah, i wish I knew whether to buy the Bridgestone D381's, the Nokian eNtyre, the Cooper GFE, or the Kumho KR22's.
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Old 03-26-2011, 05:26 AM   #7 (permalink)
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Summer tires 2011 finnish (TM magazine) LRR results for size: 205/55R16:
Michelin was the best and those % number are the difference in fuel consumption. So the worst tire consumes 6,8% more fuel than the best.
MIchelin energy saver 0%
Goodyear efficientgrip 0.1%
bf goodrich g-grip 0,9%
Nokian hakka green 0.9%
barum bravuris 2 1,5%
continental contipremiuncontact 2 1,7%
Vredestein sprottrac 3 2,1%
Pirelli cinturato p7 2,8%
Sunny sn3630 3,9%
Hankook ventus prime 2 4,0%
Bridgestone turanza er 300 ecopia 4,4%
Linglong green max 4,5%
Nokian Hakka V 4,7%
Dunlop sp sport fastresponse 6,2%
Sava intense hp 6,8%

If you like to take a look at the full test it can dowloaded here in finnish:
Vertailu - Kesarenkaat 2011.pdf

Overall winner of that test was continental contipremiuncontact 2.
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Old 03-26-2011, 10:54 AM   #8 (permalink)
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Quote:
Originally Posted by Vekke View Post
Summer tires 2011 finnish (TM magazine) LRR results for size: 205/55R16:
Michelin was the best and those % number are the difference in fuel consumption. So the worst tire consumes 6,8% more fuel than the best.
MIchelin energy saver 0%
Goodyear efficientgrip 0.1%
bf goodrich g-grip 0,9%
Nokian hakka green 0.9%
barum bravuris 2 1,5%
continental contipremiuncontact 2 1,7%
Vredestein sprottrac 3 2,1%
Pirelli cinturato p7 2,8%
Sunny sn3630 3,9%
Hankook ventus prime 2 4,0%
Bridgestone turanza er 300 ecopia 4,4%
Linglong green max 4,5%
Nokian Hakka V 4,7%
Dunlop sp sport fastresponse 6,2%
Sava intense hp 6,8%

If you like to take a look at the full test it can dowloaded here in finnish:
Vertailu - Kesarenkaat 2011.pdf

Overall winner of that test was continental contipremiuncontact 2.
thank you for the info and the link, but unfortunately most all those tires are not available here in the states under those specific model names, and the tires that we have available readily are not tested in that report.

the odder thing yet, is that the premiumcontact2 in the USA is not even rated as a LRR tire.
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Old 03-26-2011, 11:47 AM   #9 (permalink)
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That test was not for LRR tires but summer 2011 tires overall. One test section is for LRR measurements. Best 4 tires are advertized at least here in europe for LRR tires.
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Old 03-26-2011, 01:56 PM   #10 (permalink)
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ahh, gotcha. then it's my conclusion the reason why michelin energy savers finished so well in that comparison is because they weren't pitted against other LRR tires.

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