2020 Ford F250 on 37s - Expedition Truck Camper Build!

[mk216v]

Thanks for showing these Peter.
Anyone know if Baja is advertising in raw or effective lumens? (Rigid seems to advertise raw only); https://www.jwspeaker.com/blog/raw-lumens-vs-effective-lumens/

 

[eyemgh]

In your pictures the Deaver appears to have 13 leaves. In Peters there are ten. I think he has his set to carry more weight.

wonder about the difference.

I believe his were made directly by Deaver to his specs. Mine were designed by Carli and built by Deaver to carry a generic weight, 1800-2000 pounds full time in the bed. Not sure why they have a different number of leafs (leaves?) though.

 

[montypower]

Our Custom Deaver Leaf pack is designed for ~ 3" lift with 3,500lb constant load. They are a beefy pack. They allow for us to have the camper fully loaded plus towing our 14ft enclosed trailer while riding level front to back.

The individual leaf springs are thicker... and a bunch more springs than the factory! More progressive... rather than the rock hard factory while on overloads.

 

[montypower]

Started a new build project... https://expeditionportal.com/forum/...-ultimate-rock-crawler-overland-build.230837/

 

[montypower]

In "work mode" hauling our 14k dump trailer with 4 yards of gravel. Was reviewing the Super Duty spec sheets again... It's interesting this truck is rated for max towing @ 15k lbs which is the same as the F250/F350 7.3L only the diesel can exceed that rating to 20k lbs in F350 form with proper configuration. Gooseneck ratings can increase especially with the dually. But nearly the same for SRW.




Hauled this Skid Steer up 6% grade for 15 miles. Kept it 50-60mph and held speed no problem (4th gear). Really surprised how well it held speed coming back down. Zero brakes required. All engine braking. I'm sure the terrible aero and oversized tires help a bit (wind resistance).

Just saying... F250 with the 6.2L is underrated. You can't go wrong with this configuration.

 

[1000arms]

... It's interesting this truck is rated for max towing @ 15k lbs which is the same as the F250/F350 7.3L only the diesel can exceed that rating to 20k lbs in F350 form with proper configuration. Gooseneck ratings can increase especially with the dually. But nearly the same for SRW. ...

The F-350 XL 4x4 RCLB DRW, with the 7.3L gas engine and 4.30 differentials, has a max "bumper tow" rating of 20,000 pounds.

Changing the above RCLB to CCLB adds a small amount (maybe a few hundred pounds?). Ford's website isn't displaying the towing specifications properly at this moment.

 

[mk216v]

Hey Peter, can you remind us what your total rig (w/ camper, wet) weighs? And front vs rear axle weights?
And since you've been running a D load 37" Yoko Geolander X-AT for awhile (which is 3525lbs/ea tire max, at 50psi max...which means less lbs/ea when aired down to ~35-40psi) without issue, remind us why you didn't go for an E load tire which would have more lbs/ea buffer?

 

[mk216v]

Hey Peter, can you remind us what your total rig (w/ camper, wet) weighs? And front vs rear axle weights?
And since you've been running a D load 37" Yoko Geolander X-AT for awhile (which is 3525lbs/ea tire max, at 50psi max...which means less lbs/ea when aired down to ~35-40psi) without issue, remind us why you didn't go for an E load tire which would have more lbs/ea buffer?

Reposted from here; https://expeditionportal.com/forum/threads/37s-load-d-or-e.220996/page-3#post-3001941

We drove the entire state of Idaho off road (videos coming) with the tires aired down the entire time front 20-25psi and rear 30-35psi. 1,500 miles for 6 weeks. Fully loaded with camper (10-11k lbs). 23k miles on the 37x12.5R17 Load D

Tire letter is "old school" same as the "ply rating" (8 ply or 10 ply). Tires are not built that way! Todays tire construction is "ply equivalent". You're much better off looking at "load rating number" and proper PSI for the weight. When you are driving off road at lower speed (sub 40mph) you can run lower tire pressures.

I'd carefully review the actual tire carcass construction more than the "letter rating" or the "tread pattern". Tires designed for off road use with be constructed with a true "3 ply sidewall". There are not that many "less aggressive" tread design tires with a true "off road" tire carcass.

Hybrid tires I'd consider:
Yoko Geolandar X-AT
Maxxis Razr AT (3 peak)
MT Baja Boss AT (3 peak)
Milestar Pategonia X/T (3 peak) new tire and not as reputable
BFG Ko2 (3 peak) - note the 37" size wears quickly

Also note... it is much quicker inflating/deflating a load D tire. 30psi to 50psi. Compared to inflating to 80psi.

Or you can follow the internet advice... LOAD E on EVERYTHING! Including your Tacoma. HAHA

 

[montypower]

Fully loaded with full tanks, gear, 2 people and provisions for 2 weeks off grid. Front: 4,650 - Rear: 6,150

In the 17" wheel size most 37s are limited to Load D. There are a few exceptions in the MT variety such as the Maxxis Razr MT which is load E. You can also increase the width to 13.5" and get a higher rating with the Toyo MT ~ 4k lbs. But then you also need to buy wheels capable of over 4k lbs.

Actual load rating is much more important than Letter rating. It's interesting that Load D tires often can carry a greater load at less PSI than the E or F variants.

If you spend your time on road... I'd absolutely get the larger diameter wheels 18-20s and E or F tires and inflate those to the maximum pressures. However, that is an awful experience off road and likely to result in flats. Just depends on how you use your rig. And if staying on road... I'd stay with a 33" tire.

We are at 22k miles on our setup to date. And the truck rarely ever is driven without hauling something. Not a commuter rig.

 

[mk216v]

Thanks for your data Peter.

Also, MANY thanks to @klahanie for reminding me where the tire inflation "matrix" tables were located on the web. They can be found here;

Find the Correct Tire Inflation Pressure

These Load and Inflation Tables are intended to provide assistance when replacing tires with optional tire sizes including “plus sizes.”

www.toyotires.com

TOYO TIRES - Europe

Toyo Tires Official Web site

www.toyotires.com

Some interesting data gatherings I put together here, regarding 37x12.5x17 D load vs 37x13.5x17 E load vs 37x12.5x18 E load; https://expeditionportal.com/forum/threads/37s-load-d-or-e.220996/page-4#post-3002676

 

[mk216v]

Peter, what are you doing for black lug nuts? Are you using OEM Ford? My Lariat came with Chrome, and I want to use black for black wheels. TIA!

 

[montypower]

CJC Off Road - CJC-FSBCT
14MM-1.5

I'm sure most tire shops would have something that works as well.

 

[mk216v]

CJC Off Road - CJC-FSBCT
14MM-1.5

I'm sure most tire shops would have something that works as well.

Ah, thank you sir. Looks like they changed the part number, but I found on their site;

Ford Super Duty Black Closed Top Lug Nut Set of 32

Ford Super Duty Black Closed Top Lug Nuts

www.cjcoffroad.com

 

[montypower]

Towing for the summer adventures! The trusty 6.2L pulls the trailer no problem (16k GCW). Not a big fan of towing but planning more basecamp adventures and off road fun. Will see how it goes.

Can't believe our truck is over 2yrs old. Time flies

 

[Todd780]

View attachment 727551

Towing for the summer adventures! The trusty 6.2L pulls the trailer no problem (16k GCW). Not a big fan of towing but planning more basecamp adventures and off road fun. Will see how it goes.

Can't believe our truck is over 2yrs old. Time flies

What's the set up in the trailer?