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Old Oct 24, 2015 | 03:51 PM
  #1  
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Larger tires

I'm thinking of going from my 275/70/18 tires up to 285/75/18 size. I'm sure that I'll have to have my speedometer reset, but my real concern is if I have to put the original size spare tire on in an emergency...will this mess anything up in the drive train?!

Anyone have experience with this situation?

Thanks, Larry
 
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Old Oct 24, 2015 | 06:02 PM
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You will be just fine with whatever size spare comes stock.
 
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Old Oct 24, 2015 | 07:19 PM
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No you will be fine for a short distance. Just don't use your elocker if you have it.
 
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Old Oct 25, 2015 | 06:01 PM
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What superrangerman2002 said... And I would avoid locking in 4WD if you have to put it on the front for that short period of time.
 
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Old Oct 25, 2015 | 06:41 PM
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Originally Posted by Dakster
What superrangerman2002 said... And I would avoid locking in 4WD if you have to put it on the front for that short period of time.
I wouldn't. The tires are close to the same size. The front differential is open. Not seeing a problem here.
 
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Old Oct 25, 2015 | 06:54 PM
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Originally Posted by MisterCMK
I wouldn't. The tires are close to the same size. The front differential is open. Not seeing a problem here.
Tires are 8.4% larger... I like to play it safe. You can't make a tight turn in 4wd with both hubs locked. That tells me I would not want to drive a long distance with one tire larger than the other.

Just my opinion... in an emergency I'd drive in 4wd and take my chances no doubt.
 
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Old Oct 26, 2015 | 03:43 PM
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I guess I should ask if anyone else is running 285/75/18 tires on a std. Non lifted F350...?
 
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Old Oct 26, 2015 | 08:54 PM
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You'll be fine. Could go a little bigger if you want.
I'm running 295-70-18, plenty of room.
 
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