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Old Jun 28, 2012 | 10:11 AM
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Dad's Ride '11 F-250's Avatar
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Hey guys, I'm new to this and was looking for some input from someone who might know the answer to my Question. I own a 2011 F-250 Super Duty Lariat Crew Cab with the short box. It came factory with 20" rims and LT275/65R20 Michelins. I would like to change the wheels to 18x9 RBP 94R with 325/65-18 BFG AT's. Does anyone know if they will fit or if that much of a change would throw everything out of whack?(Speedometer, Computer readouts, etc.) I pull a 35' toy hauler and don't want to hinder the pulling. The BFG's are E rated, so I don't think that would be an issue.
 
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Old Jun 28, 2012 | 12:03 PM
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Hi there!

What is the offset of those rims? Are you going to do a leveling kit? They are going to throw your speedometer out of wack a bit, yes. I doubt you will see much affect as far a towing, very slight.
 
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Old Jun 28, 2012 | 04:53 PM
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Originally Posted by Dad's Ride '11 F-250
Hey guys, I'm new to this and was looking for some input from someone who might know the answer to my Question. I own a 2011 F-250 Super Duty Lariat Crew Cab with the short box. It came factory with 20" rims and LT275/65R20 Michelins. I would like to change the wheels to 18x9 RBP 94R with 325/65-18 BFG AT's. Does anyone know if they will fit or if that much of a change would throw everything out of whack?(Speedometer, Computer readouts, etc.) I pull a 35' toy hauler and don't want to hinder the pulling. The BFG's are E rated, so I don't think that would be an issue.
275/60-20 = 34.07" dia.
325/65-18 = 34.63" dia.

For practical purposes, those are the same diameter tire. Power difference will be zilch. Speedo will still be close enough. Those 325's might rub slightly at full lock.

The speedo will probably be closer to accurate than it is now, because they are usually 2% fast from the factory.
 
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Old Jun 28, 2012 | 06:37 PM
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Not sure what offset to go with. I was not planning on going with a leveling kit. The overall diameter will be close to the same as the factory rims and tires. Thanks for the input!
 
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Old Jun 28, 2012 | 10:11 PM
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Sorry, I was thinking 35.7 tire for some reason.
 
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