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Old 05-30-2012, 03:52 PM   #1 (permalink)
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275/65/20

Who has 275/65/20 set up? i'm deciding between this and 285/65/20 and concerned 275/65 might look too tall/skinny, but looking at additional $300+ to go 285/65. pics and stating which kit/setup you have would be great! also deciding between 2" in front vs 3/1...
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Old 05-31-2012, 11:19 PM   #2 (permalink)
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Originally Posted by russ7pa View Post
Who has 275/65/20 set up? i'm deciding between this and 285/65/20 and concerned 275/65 might look too tall/skinny, but looking at additional $300+ to go 285/65. pics and stating which kit/setup you have would be great! also deciding between 2" in front vs 3/1...
I'm in the same boat. My 5100's are on the way. I don't know if I want to do the 275/65/20 or the 285/65/20. I know the 275's will be more fuel efficient. I have a CM platinum.
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Old 06-01-2012, 11:36 AM   #3 (permalink)
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I'm in the same boat. My 5100's are on the way. I don't know if I want to do the 275/65/20 or the 285/65/20. I know the 275's will be more fuel efficient. I have a CM platinum.
better mileage, save loot on tires. plus the cooper discoverer AT3 or Zeon LTZ both get awesome reviews and only come in that size. 285/65/20 and 285/60/20 are the other 2 sizes I would consider and way more expensive and limited selection. i'm gonna do the BFG TA KO in 285/65/20 if I decide to go that big.
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Old 06-01-2012, 11:16 PM   #4 (permalink)
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The 275/65/20 is a 34.1" tall tire. The 285/60/20 is 33.5" tall.

The 285 would get the better gas mileage by a small amount.
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Old 06-01-2012, 11:23 PM   #5 (permalink)
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The 275/65/20 is a 34.1" tall tire. The 285/60/20 is 33.5" tall.

The 285 would get the better gas mileage by a small amount.
Missed that one. You are asking about the 275/65/20 vs the 285/65/20.

The gas mileage win goes to the 275's the 285's are 34.7" tall
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Old 06-02-2012, 12:48 AM   #6 (permalink)
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Is it the width or the height or the weight that affects fuel economy the most?



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Old 06-02-2012, 10:13 AM   #7 (permalink)
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^^ good question...i thought it was based on width and weight b/c of resistance. when people talk about the overall diameter/circumference affecting mileage i wonder if it's b/c they don't get recalibrated so the overall circumference is making the larger tire not turn as much as the smaller tire = less mileage registered but not the true distance traveled...anyone actually know the answer instead of just speculating like me?
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Old 06-21-2012, 06:41 PM   #8 (permalink)
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Is it the width or the height or the weight that affects fuel economy the most?



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I believe it is all 3 that factor in and you really can't say one is more than the other. I think it is the moment of inertia that affects your fuel economy. Your truck has to get the wheels turning and it takes more force to get more weight at a further radius from the axle turning. So, weight, width (contributes to weight), and height all factor in. Now, it gets more complicated because you have an angular momentum once you get moving but this may actually not contribute to the linear momentum of the vehicle...I am pretty rusty on all this stuff. Bottom line, if you go bigger, expect some drop in MPG.

That being said, I am in the same boat. I have a stock 08 DC LTD with 20s and I am getting ready to grab 5100s and new tires. I want to fill out the wheel well with some ATs but not sure what size. I would like to go wider than the 275 and taller as well but not so wide and tall that I rub. I would think I can fit a wide 33" tire...maybe 33x12?
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Old 06-21-2012, 09:06 PM   #9 (permalink)
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I didn't get much done at work since I was looking at tires all day.. I even wrote down all the specs and pricing for the grappler m/t and the duratracs. Seems like you can spend several hundred more by going up .5 in diameter.. or you can save that by choosing a particular tire in a specific size. I am no closer to choosing one then I was this morning. I mean are you really going to notice .5 diameter in height, an inch in width, or will you regret not spending the extra 300.00 for the next 50k miles? Hard questions
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Old 06-21-2012, 09:57 PM   #10 (permalink)
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I'm on the same page. I really want something bigger but the same time don't want to spend the money on wheels. But it's hard as it seems no matter what the stock 20 just don't seem big enough thanks to the offset.
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Old 06-21-2012, 10:11 PM   #11 (permalink)
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I think I have the 275 toyo mts with a 3/1. If so ill post up pics tomorrow.

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Old 06-22-2012, 12:19 AM   #12 (permalink)
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When you put it that way 300 over 50k ain't shat. But buying new wheels plus 300 extra tires is a bit.


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Old 06-22-2012, 07:55 AM   #13 (permalink)
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I think I have the 275 toyo mts with a 3/1. If so ill post up pics tomorrow.

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Yes more pics please!!! Thanks
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Old 06-22-2012, 09:07 AM   #14 (permalink)
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What is the offset of the stock limited 20?


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Old 06-22-2012, 09:29 AM   #15 (permalink)
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