Bridgestone article on rolling resistance
While doing tire research I came across this following page, and hadn't seen it shared before:
https://www.bridgestone.com/responsi...ncy/index.html Quote:
In other news, I just learned the VW XL1 uses tires which are almost identical in diameter to the G1 Insight's. |
Wider tires usually equal lower rolling resistance given the same pressure. But they mentioned high pressures in these tires. I don't know what they consider to be high pressure, but if they were to run say 80 psi instead of the 30-35 most cars call for, that could make the difference.
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I just ordered new tires for our Town and Country. Seeing as how there seems to be no standards in the USA on what a LLR tire is I decided to look for one with a 51 psi max rating, a long tread life (which hopefully means harder compounds with stable tread blocks), and I got a 225/65/16 vs a 235/60/16 that is on there now.
They are Hankook Kinergy PT H737 and the final all in price should be almost exactly $400 shipped, mounted, balanced, and old disposal fee through Tire Buyer. |
I don't know how accurate Tirerack ratings are, but I always use that as a primary criteria for choosing a tire. Averaging customer ratings in various criteria seems like it would tend to accurately portray a tire.
Here's an example chart: https://www.tirerack.com/tires/surve...7&cameFrom=TSR |
I think the survey is skewed by the very people making the response. I don't see Joe average "meh" reports in the comments which IMHO is a telling metric. Consumer reports has a different listing. Attempting to get RELIABLE unbiased data in the modern age is tough.
I'm trying to buy the best ultra performance all season in this size. The data is last years and replies are either gush or hate until you go 20pages back |
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We do have a thread on this line of Bridgestone tires:
Bridgestone Announces Large Diameter Narrow Tires |
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And as for width, no counting rolling resistance, the narrow tire will have less frontal area unless it is also much taller. My new tires will be a bit taller but that should lower the gear ratio a tiny amount. That was my reasoning on going 225/65 vs 235/60 and a $25 savings buys 500ish miles. |
In the past I've been able to look up the tire I want on the Walmart site. They will ship to your local Walmart to have them installed. Haven't had to buy tires lately and won't for a couple more years, so don't know about tire selection at this time.
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