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Shaun
Dodge Dakota
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5/13/2004
11:38:04
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 Subject: Tires and MPG?
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Message:
Just swapped my 255 65 16 for 245 75 16. Just wondering what kind of effect this would have on my MPG. I was averaging 19.5, and now it has dropped to 16.9. Would the change of size on the tires cause this kind of drop? or is there another problem that is just starting to show, and this is just a coincidence?
Thanks.
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CThomp
*GenIII*
5/13/2004
12:06:53
|  RE: Tires and MPG?
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Message:
What is the tread style of the new tires. If it is an aggressive style traction that could do it. Though 2.6 mpg drop seems like alot. What is your dak?
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shaun
Dodge Dakota
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5/13/2004
12:20:44
| RE: Tires and MPG?
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It's a 2001 3.9 v6. Went from the stock goodyear's to a pirelli scorpion at. So it is a pretty agressive tire.
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Dragon
Dodge Dakota
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5/13/2004
13:17:25
| RE: Tires and MPG?
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I lost 1.5MPG switching from the stock Goodyear to a Cooper Discoverer ST.
More aggressive = less MPG
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deeridge
Dodge Dakota
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5/13/2004
13:58:46
| RE: Tires and MPG?
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The taller tire takes more power to turn and it also changes your speedo calibration too.
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Kowalski
Dodge Dakota
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5/13/2004
16:31:45
| RE: Tires and MPG?
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Good point - you're now covering more ground with those taller tires and probably not factoring that into your milage. I'd expect your now effectively taller gearing to actually help milage unless you don't have a v-8.
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Martin
GenII
5/14/2004
00:08:28
| RE: Tires and MPG?
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I thought taller tires have less rolling resistance.
<----There Is A Real Dodge truck!
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bemoore
Dodge Dakota
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5/14/2004
10:11:33
| RE: Tires and MPG?
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Message:
2556516 and 245/75/16 are about the same size arnt they even if its taler there also narower so you have less friction to over come
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