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post #1 of 4 Old 01-07-2011, 07:19 AM Thread Starter Rookie
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Tires and Towing

I have a 2010 F-350 XLT PSD. It came with the factory 20's (34.1" tall) and a 3.55 rear-end. I have bought a set of 20X9 XD Badlands with +18mm offset. I want to run a wider set of tires but am concerend about rubbing issues on the outside of the truck and load ratings of the tires. I would get a leveling kit but I tow a 10,000lb fifth wheel and can't afford to mess around too much with the truck's stability.

I have looked at the following tire sizes...
295/60R20 34.4" tall. 3750@ 80psi
305/55R20 33.5" tall. 3195@ 65psi

2 questions.....

1. Is the lesser load rating enough for the truck? It is adequate on paper but any real world experiences towing with the lesser rating?

2. Any other suggestions for tire sizes in a 20" rim without a leveling kit or lift and if so do you have some pics?

Thanks guys...
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post #2 of 4 Old 01-07-2011, 07:54 AM
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Unless you are towing heavy everyday then you could get by with a lighter tire. Alot of times though a lighter tire isn't going to last as long being on these trucks since they are so heavy.I wouldn't worry about putting on a leveling kit either, shouldn't affect handling so much that it would be difficult to tow. My old 35" BFG MTs were on the heavy end of the D range rating and I towed my Dad's 5th wheel several times that's over 16K, no problems at all. I would feel safe towing with either one of the tires you listed

2012 F350 XLT CCLB 4x4 6.7

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post #3 of 4 Old 01-07-2011, 08:31 AM
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I'm towing with the tires in my sig and didn't have to put on a leveling kit. The load range on them is nice to have for piece of mind too, I pull a 14k fifth wheel and had the same concerns about lifting or leveling it.

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post #4 of 4 Old 01-07-2011, 11:05 AM

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I have a leveled front end and the F350 blocks in the rear and it sits just about perfect. When I tow, I have airbags to keep me level. BTW, I am running 305/55R20 in the Nitto Terra Grapplers, which are rated at 65psi. They are still a Load Range E tire (10 ply), but they only need 65psi. There are so many different configurations, it would be impossible to say you should only use load range for instance because in many cases a Load Range D could have higher weight capacity than a comparable E tire.

If I had to pick just one, look at the weight capability and ensure that you are well within your GVWR for those tires and you should be just fine.

Shawn Carlson

Proud Navy Vet
2005 F250, CCSB, 6.0 PSD, FX4 (The Sweet Unit is white)
2008 F350, CCLB, 6.4 PSD (Brad-the wife's truck is black)

Engine Mods:
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Icon Adjustable Trac Bar
Firestone RideRite Air Bags
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Icon 2.5" Leveling Kit w/ F-350 rear blocks
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