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Old 06-14-2010, 02:23 PM   #1
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Default 265/70r17 or bigger?

I have a 2005 5.4, 4x4, LSD 3.73. I am running the factory 255's right now and it's time for new tires. I use my 4x4 enough that I think I would benefit from the bigger tire. The 265 is pretty much stock but I can get a really good deal on some 285's Toyo's from a local guy. My question is would the 285's cause problems like rubbing or bad MPG's? I'm running stock rims.

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Old 06-14-2010, 08:10 PM   #2
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You should be fine with the 285/70R17s. My 275/70R18s were a little taller and fit fine with no rubbing stock. You may see a minimal decrease in MPGs, remember, you'll need to adjust for speedo inaccuracy, so you'll need to use a tuner/dealer to recalibrate, or just factor that your speedo and odometer is going to be around 10% off (going from 255/65 to 285/70)
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Old 06-17-2010, 03:49 AM   #3
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I have a 2006 5.4 liter xlt screw 2x4 with 2.5" leveling kit. I want to replace my factory, "255/65 R17" tires that are worn out with a different look on existing rims.. Something more aggressive looking with good mpg and style. Please HELP!!!
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Old 06-17-2010, 05:31 AM   #4
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My advice is get beiger light wheels 18's or 20's to compensate for the heaver beiger wheels. I hade 285/60-18's and changed to 325/60-18's on new lighter wheels and cant see much deference in power or MPG.
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Old 06-17-2010, 08:32 AM   #5
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I'm running 285/70/17's on my 4.6 STX w/ HBS 2.5" level and have no issues with rubbing or accelerating. Your 5.4 should be fine. I lost literally like 1-2 MPG by leveling it and adding the tires. IMHO tho if you're worried about MPG then you're driving the wrong vehicle in the first place.
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Old 06-17-2010, 08:38 AM   #6
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i have 04 4.6 XLT supercab, i ve to replace the tires, i can't pass the inspection. i have 255/70/17's if i go up to 285/70/17's would be a problem? without leveling kit?
thanks
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Old 06-17-2010, 09:40 AM   #7
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Quote:
Originally Posted by Rep.OF.Georgia View Post
i have 04 4.6 XLT supercab, i ve to replace the tires, i can't pass the inspection. i have 255/70/17's if i go up to 285/70/17's would be a problem? without leveling kit?
thanks
2 wheel drive or 4?
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Old 06-17-2010, 10:28 AM   #8
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Quote:
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2 wheel drive or 4?
it is 4 wheel drive
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Old 06-17-2010, 01:41 PM   #9
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Quote:
Originally Posted by Rep.OF.Georgia View Post
it is 4 wheel drive
you should be fine with 285/70/17 on a stock 4wd and stock rims
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Old 06-18-2010, 04:25 AM   #10
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Quote:
Originally Posted by Shiny View Post
My advice is get beiger light wheels 18's or 20's to compensate for the heaver beiger wheels. I hade 285/60-18's and changed to 325/60-18's on new lighter wheels and cant see much deference in power or MPG.
WOW!!! I'm sure you are mechanically advanced, but you're spelling is atrocious.
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