Tire Size vs Economy
Alright guys here it is.
My vehicle stock size tire is 215 70 16 (#1). That size being one choice, I have two others that I'm willing to make. They are 255 60 16 (#2), and 215 85 16 (#3). Stock size tire #1 is 27.9 in diameter and weighs 28 lbs. Tire #2 is 28 in diameter and weighs 32 lbs. Tire #3 is 30.4 in diameter and weighs 38 lbs. All tire sizes noted above will support the vehicle weight, and #1 & #2 have a max psi rating of 51. #3 has a max psi rating of 80. Speed rating on all tires is S. Now here is the question: Which is best for economy and why? Please give an explanation other than so & so says, or so & so has a link in his signature. Thanks, Jim |
Is your driving more stop-and-go or more highway? If the differing weight of the tires will make a large difference, it will be in stop-and-go driving. Also in stop-and-go driving, the gearing advantage of taller tires won't help as much and may even make things worse (since your Astro probably has some decent gears already).
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I wouldn't go with either choice #1 or #2 but go with 215/75R16. Slightly taller, and doesn't have the extreme weight penalty.
Not sure if your looking for a truck tire, but the Latitude Tour has the GreenX technology in that particular size which has LRR. Also Michelin has $70 Rebate now. https://www.tirerack.com/tires/tires....omCompare1=yes |
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How about my current tire 215 70 16 Nokian WR G2 SUV?
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I'm really not familiar with that tire, so couldn't really comment on it. That particular tread design looks to be a better snow tire if you need that capability.
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On my Explorer I used to have, I went with the stock size on the door, funny none of the tire stores carried it, so I had to order the size. It was made by General tire and it was cheap, I got 2 for 120 bucks back in 06, the tire store guy said he didn't keep them in stock, because they were so cheap, but since I asked for that particular size, he ordered them for me. The next month I got 2 more, great little disposable tires, my father loves to put huge tires on his SUV's. I went from 16 mpg to 20 average by getting the right size.
Now my father has a new Jeep 3.7 SUV, he averages 12, I drove it for a week and got 24. He drives foot to the floor in the city and goes from 75 to 50 to 75 on the highway. I have watched him drive like this, oscillating for the last 40 years. LOL, he might be behind you right now. |
I'd guess that Bobert's LRR tire suggestion is your best bet, unless some hard data can be found.
Scott, it sounds like your dad is almost pulse & gliding, just get him using neutral as he goes from 75 down to 50 and he should gain some fuel economy... |
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