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Spare Tire Mod

Cummins12V98
Explorer III
Explorer III
I increased my load range from "H" to "J" buying new Continental 235 17.5 tires and Alcoa Rims. I have heard stories about people loosing their spare. At a combined 95# I would hate to think of the damage and potential death that combo could do.

Found a pc of 2x2x28" long Aluminum square tube at a friends shop. I cut some inner tube and attached to each end for a cushion between the tube and tire with 3M Yellow sticky door seal adhesive. On one end of the mechanism mount I removed the bolt and added a pc os 3/8" threaded rod double nutting it in place. Once I raised the tire in place I ran a nut to within a couple inches of the tube and cut off the rod cleaning up the end. I then removed the nut and replaced it with a 3/8 nylock nut then drilled a small hole below it then ran a pc of stainless wire thru the hole to make sure the nut could not back off.



2015 RAM LongHorn 3500 Dually CrewCab 4X4 CUMMINS/AISIN RearAir 385HP/865TQ 4:10's
37,800# GCVWR "Towing Beast"

"HeavyWeight" B&W RVK3600

2016 MobileSuites 39TKSB3 highly "Elited" In the stable

2007.5 Mobile Suites 36 SB3 29,000# Combined SOLD
7 REPLIES 7

Cummins12V98
Explorer III
Explorer III
Potentially saved a life or more and several hundred to replace tire and wheel. Something that has been in the back of my mind for a while, glad I finally did it.
2015 RAM LongHorn 3500 Dually CrewCab 4X4 CUMMINS/AISIN RearAir 385HP/865TQ 4:10's
37,800# GCVWR "Towing Beast"

"HeavyWeight" B&W RVK3600

2016 MobileSuites 39TKSB3 highly "Elited" In the stable

2007.5 Mobile Suites 36 SB3 29,000# Combined SOLD

Cummins12V98
Explorer III
Explorer III
ford truck guy wrote:
I like that idea Ron,

That has always been my fear as I've heard a couple stories of people loosing their spares while driving due to the weight of heavier tires..

The mechanism just flat out failed... I try to check mine every time I move.

SO....... The 3/8" all thread simply went into a regular bolt hole holding the system up??


I think the bolt was 1/4 or 5/16" so I drilled that hole out to accept the 3/8" all thread rod.
2015 RAM LongHorn 3500 Dually CrewCab 4X4 CUMMINS/AISIN RearAir 385HP/865TQ 4:10's
37,800# GCVWR "Towing Beast"

"HeavyWeight" B&W RVK3600

2016 MobileSuites 39TKSB3 highly "Elited" In the stable

2007.5 Mobile Suites 36 SB3 29,000# Combined SOLD

Lwiddis
Explorer II
Explorer II
Good protection for your fellow motorists.
Winnebago 2101DS TT & 2022 Chevy Silverado 1500 LTZ Z71, WindyNation 300 watt solar-Lossigy 200 AH Lithium battery. Prefer boondocking, USFS, COE, BLM, NPS, TVA, state camps. Bicyclist. 14 yr. Army -11B40 then 11A - (MOS 1542 & 1560) IOBC & IOAC grad

joshuajim
Explorer II
Explorer II
Years ago in a previous trailer, it had an undermount spare. We were going to a remote site in the NorCal Redwoods. The last .4 mile into the campground was a 10โ€™ wide โ€œpathโ€ where at one point the redwoods on both sides were less than 1โ€™ of the trailer. So we always stopped at the entrance to scope out the โ€œpathโ€ to see if anyone was coming as there was no place to pull off and let someone pass due to the close proximity of the trees.

As we were there, a pickup pulls up and asked if we lost a tire. I look under the trailer and the spare was gone. The cable holding it had snapped.

Now the lucky part. The tire was in front of the axles. When it fell, it must have remained completely flat to pass under both axles. Has it tipped up, it could have flipped the trailer.

That would have been quite a ride.
RVing since 1995.

fj12ryder
Explorer III
Explorer III
Good idea: belt and suspenders.
Howard and Peggy

"Don't Panic"

I like that idea Ron,

That has always been my fear as I've heard a couple stories of people loosing their spares while driving due to the weight of heavier tires..

The mechanism just flat out failed... I try to check mine every time I move.

SO....... The 3/8" all thread simply went into a regular bolt hole holding the system up??
Me-Her-the kids
2020 Ford F350 SD 6.7
2020 Redwood 3991RD Garnet

larry_barnhart
Explorer
Explorer
Good idea.

chevman
chevman
2019 rockwood 34 ft fifth wheel sold
2005 3500 2wd duramax CC dually
prodigy



KSH 55 inbed fuel tank

scanguage II
TD-EOC
Induction Overhaul Kit
TST tire monitors
FMCA # F479110