Lassen National Forest, Northern California, dispersed camping.

Beautiful autumn evening in the Lassen National Forest, Shasta County, Northern California, October 2020. Camped at a wide spot on the side of a mountain with fantastic views.

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Resources:

Hallmark Truck Campers

 

 

 

 

Truck camper MPG testing.

Sometimes results are not what most would expect.

RELATED Link – Tread Matters: tire selection and fuel economy.

Research the STT PRO here: Cooper Discoverer STT PRO
Research the Fun Country here: Dick Cepek Fun Country

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Copyright James Langan/RoadTraveler. All Rights Reserved

Resources:

Cooper Tire

Dick Cepek Tires & Wheels

 

 

 

Hagerman Pass Road, Colorado

Heading down the east side of Hagerman Pass, near Leadville, Colorado, after crossing the continental divide.

I’m in my 2017 Ram/Cummins with Hallmark Nevada flatbed camper, following my buddy Brad, pulling his Kimberley Karavan trailer with his second generation Toyota Sequoia, and Tony in his 6.4L F-250 with a Four Wheel Campers Hawk on the back.

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James Langan

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Dodge Ram 35 inch spare tire

Cooper STT PRO 295/65R20 (35.4″), ready to winch under a 2017, fourth generation Ram/Cummins 2500.

Question: How much spare tire can you fit under your truck?

Answer: It depends.

This post is about squeezing a large (35.4-inches) tire into the stock location on a late-model, fourth-generation, Dodge Ram Cummins pickup.

Both my Ram 2500 trucks (2014 and 2017) have had the tailpipe heat shield removed to facilitate winching a much larger tire into the factory spot. Obviously a bigger tire sits closer to the tailpipe. Only you can decide if it’s too close for you and your application. This Cooper Tires STT PRO is only about one-inch from the tailpipe; close!

35.4″ Cooper STT PRO spare is close the factory tailpipe on this 2017 Ram/Cummins.

For several years I have carried oversized rubber in the factory location on my fourth-generation Ram/Cummins trucks, mostly tires that were 34.8-inches tall. The 295/65R20 Cooper Discoverer STT PRO is substantially taller.

This 2017 Ram has plenty of clearance for the rear-axle track bar.

My 2017 has less room overall than my 2014, as the factory trailer hitch receiver is still in place. (It was removed on the 2014.) There are also steel plates on the inside of the frame to mount the Hillsboro 2000-Series aluminum flatbed. The 3/8-inch plates, one on each side, consume 0.75-inches.

3/8-inch steel plates inside the frame are part of the flatbed mounting.

There are advantages to choosing 35-inch or smaller tires on late-model, heavy-duty trucks instead of the popular 37-inch versions, particularly if they will fit in the factory spare location. These include, but are not limited to, not needing an additional tire carrier or pushing a truck camper further aft to fit a spare in front of the camper (which increases rear-overhang, tail-swing, and impacts weight distribution). Unless your rig is geared low—and most new vehicles have tall gearing—the taller overall gearing that results from fitting larger diameter tires is often a negative, as it results in less torque at the wheels.

Many should ask themselves if they really need the extra clearance provided by 37-inch rubber, or are they just following the crowd, and potentially making unnecessary compromises. There are positives and negatives for nearly every modification and upgrade choice. Generally we need to give something to get something. Everyone should decide for themselves if the juice is worth the squeeze.

35.4″ Cooper STT PRO stuffed under a 2017 Ram/Cummins 2500.

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James Langan

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Resource:

Cooper Tire

 

 

 

Timbren DRTT3500E Spring Kit

On Dec. 23, 2019, I installed the firmer Timbren Industries single-convoluted springs, replacing the DR2500D double spring I ran for six months. I needed to reuse the bracket from the double-spring kit because there was a packaging mistake with my order.

However the springs, mounting brackets, and included Timbren spacers are interchangeable, just the spring mounts are different heights for this application. Received the correct and taller DRTT3500E mounting bracket and did the R&R. Without a 1-inch spacer the new setup is 3/4-inch taller overall.

Slides: 1) Shows the new set up on the left and what I’ve been running for three weeks on the right. 2) What I was running installed 3) What I’m running now, which is the traditional DRTT3500E spring mount/kit, without the optional spacer.

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James Langan

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Resource:

Timbren

 

Timbren SES Single-Convoluted DRTT3500E first look

Timbren Single-Convoluted Aeon spring

Timbren’s SES (Suspension Enhancement Systems) severe-service, single-convoluted Aeon rubber springs were an excellent upgrade on my 2017 Ram/Cummins 2500 Hallmark flatbed camper outfit.

The double-convoluted version I have been running for six months worked well, but the shorter and firmer single-convoluted spring is a better fit for my application. Not stiff or jarring, but more supportive and less squishy. Combined with other recent upgrades, my camper outfit drives fantastically.

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James Langan

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Resource:

Timbren

 

 

Hallmark Truck Campers’ Pull-In Cab-Over Bed

 

James Langan

Copyright James Langan/RoadTraveler. All Rights Reserved

Resource:

Hallmark Truck Campers