2003 F-550 With BigFoot Camper - Tire help

skibaru

New member
Hi all, I have a 2003 F-550 with a 20' single wheel conversion, bushwacker flares in the front, and a utility bed and a bigfoot camper - not sure my exact weight but my math seems to think I am in the neighborhood of 14,500 lbs ( 8000lbs [truck]+ 1000lbs[utility bed] + 3000lbs[camper]+ 1500lbs [stuff]). I do quite a bit of snow and dirt driving and am looking to replace my current tires after a blowout on the highway (uneventful, but not fun).

I'm currently running Nitto Exo Grappler LT325 60 R20 that have a 3,750 weight rating, clearly that seems to be cutting it a bit close with my truck although they did last a bit.

I'm not opposed to lifting the truck a bit but would rather not lift it too much. I was looking at the Continental MPT 81 275/80R20 but was told they require a 9in wide rim - unfortunately my rims are 10in. So the next size up would be the 335/80R 20 - which I think require a 4in+ lift and have a burly 6779 Lbs max load rating. Just wanted to see if there was an option that's got like a 4500 lbs rating and would likely fit my truck with something like a 2in lift.

Thanks for any help!
 

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toastyjosh

Adventurer
What about the Micky Thompson MTZ P3 at 3860lbs, or the toyo open country.
Also found this info.
- 335/80 R20 (41.6")Continental (7400 lbs rating)
- 365/80 R20 (43.6")Continental (7600 lbs rating)
- 335/80 R20 (41.4")Goodyear (6395 lbs rating)
- 365/80 R20 (43")Goodyear (8270 lbs rating)

If you lift it, Air bag the back. https://www.sdtrucksprings.com/inde...MI0MPb69r5_AIVrxWtBh0fFAMSEAYYASABEgJoFfD_BwE

For the front you could try this. https://www.sdtrucksprings.com/index.php?main_page=product_info&products_id=24040 and try trimming.
 

skibaru

New member
What about the Micky Thompson MTZ P3 at 3860lbs, or the toyo open country.
Also found this info.
- 335/80 R20 (41.6")Continental (7400 lbs rating)
- 365/80 R20 (43.6")Continental (7600 lbs rating)
- 335/80 R20 (41.4")Goodyear (6395 lbs rating)
- 365/80 R20 (43")Goodyear (8270 lbs rating)

If you lift it, Air bag the back. https://www.sdtrucksprings.com/inde...MI0MPb69r5_AIVrxWtBh0fFAMSEAYYASABEgJoFfD_BwE

For the front you could try this. https://www.sdtrucksprings.com/index.php?main_page=product_info&products_id=24040 and try trimming.
Yeah looking at that leveling kit for the front but I am worried that it wouldn't be enough to fit 42's?

I believe the back wouldn't really need bags as it is way underweight already - but I am new to this so open to suggestions.
 
BTW I suspect wheels designed for LT tires have a different bead seating area than those for MPTs. Which are different than military tires. And what load capacity is stamped on your current wheels?
 

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