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Old 08-08-2011, 07:45 AM
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tire sizes

truck is in shop getting repairs. shopping tires to be put on. tire dealer is arguing that 37-12.50-20 will not fit on a leveled 350 truck. dealer says no too. i know they will fit but all around here say no.
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Old 08-08-2011, 08:02 AM
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No. They are correct. I am one of the few running 37's on a 4" Lift. I had to trim about 2" off of the front bumper and pull the fenderwell liner back about 4". I would not even try it with only a leveling kit. I'm sorry, I know that is not what you want to hear.
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Old 08-08-2011, 08:41 AM
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One of my buddies has a 2.5 leveling kit on his and is running 37 mud grapplers.rubs alittle but does fit.
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Old 08-08-2011, 11:28 AM
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Quote:
Originally Posted by Special View Post
No. They are correct. I am one of the few running 37's on a 4" Lift. I had to trim about 2" off of the front bumper and pull the fenderwell liner back about 4". I would not even try it with only a leveling kit. I'm sorry, I know that is not what you want to hear.
FYI the 6.4 sits higher and has different fender wells than the 6.0.....i run 35x12.50 20's on a stock setup no issues....im told the 37's will fit with a 2.5 level lift on a f350


on my 6.0 i had a level lift and 35's hit front and back....needed a football field to turn around...
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Old 08-08-2011, 11:29 AM
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37's will fit with the stock wheels and a leveling kit. It's all in the right offset wheel.
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Old 08-08-2011, 01:00 PM
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I'm sorry. I did not catch that it was an 08+.
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Old 08-09-2011, 02:23 AM
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thanks for the replies. i am still a tad concerned that the 37" may be snug. i tow and dont want to have to worry about the squatting.......
stock 275-65-20 = section width 10.82 37x12.50x20= 12.5
overall diameter 34.07 36.8
sidewall height 7.03 8.50
radius 17.03 18.50
circumfrence 107.0 116.2


should i try it or shrink down to a 35"? i think the truck had PLENTY of room with the stock 275 and had good room when i moved up to the well worn 285 or 295's(cant remember what they were) i think there will be room for the new 3" but all on my end are telling me no..... thanks.
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Old 08-09-2011, 05:36 AM
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The tires will fit with stock wheels. But thats not what I would worry about. Your truck has 3.55 or 3.73 axle ratio......? Either way, both of those are inadequate for towing, let alone towing with 37" tires. I chose not to go above 33's for that exact reason.
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