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Open Roads Forum  >  Truck Campers

 > 19.5" Tire Comparisons

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cptqueeg

Idaho

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Joined: 04/11/2020

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Posted: 05/20/21 05:53pm Link  |  Quote  |  Print  |  Notify Moderator

jshupe wrote:

Ended up reordering these today since the parts are in, except swapped the fronts out for Cooper RM253 due to stock issues there. Also ordered an Ironman I604 on steel spare.

Need the capacity now, because I'm placing a custom flatbed order.


Custom flatbed truck camper? If so what did you get?

n0arp

FT

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Joined: 08/20/2016

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Posted: 05/24/21 12:51pm Link  |  Quote  |  Print  |  Notify Moderator

cptqueeg wrote:

jshupe wrote:

Ended up reordering these today since the parts are in, except swapped the fronts out for Cooper RM253 due to stock issues there. Also ordered an Ironman I604 on steel spare.

Need the capacity now, because I'm placing a custom flatbed order.


Custom flatbed truck camper? If so what did you get?


Sorry, no, a custom flatbed to put my existing camper on.

97x102" flat bed
- tapered rear corners
- LED lights all around incl headache rack
- no ears on headache rack
- no stake pockets
- no rub rails
- 5/8" D rings welded to side at 1' intervals
- extra 7 way plug on rear driver's side
- two 48x18x18 toolboxes on top of the deck
- two 18x18x18 toolboxes on top of the deck
- two 30x18x18 toolboxes (in front of tires)
- two 18x18x18 toolboxes (behind tires)
- inset nuts for guide rails
- inset nuts for topside toolbox mounts
- guide rails for truck camper
- bolt-on brackets added to topside toolboxes
- recessed gooseneck hitch
- retain spare mount
- retain factory 2.5" receiver hitch
- factory backup sensor relocation
- factory backup camera relocation

I blueprinted the camper and am having the D-ring and toolbox placement, etc, where I want it. Looking forward to seeing how it comes out in a couple weeks.


2021 Ram 5500 Limited 84CA Cummins 4x4 w/ flatbed
2020 Jeep Wrangler Unlimited Rubicon 2.0T (follow or TC toad)
2015 Keystone Alpine 3730FB 2925W/22.8kWh, 30K multi-split
2016 Arctic Fox 1140 WB 1800W/11.4kWh

n0arp

FT

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Posted: 06/06/21 09:28pm Link  |  Quote  |  Print  |  Notify Moderator

I received the new tires and extremely happy so far with the performance, with a couple hundred miles on them. No break in period required, unlike my previous 19.5" tires.

The Conti Terra HD3 tires I put on the drive axle spin less in identical conditions (loose dirt and mud in an area I've been frequenting recently) than the Goodyear Duratracs they replaced - something I was hopeful for, but not expecting. I had to use 4WD with the Duratracs but these keep going in 2WD. The rear end also feels stickier on curvy mountain roads, another thing I wasn't expecting. Only tested unloaded so far, but I'm sure loaded will be the same or better. Tread is very much like a MT, where the old tires were somewhere between AT and MT. Front tires are like ATs.

Unlike my last 19.5"s, I didn't have these RoadForce balanced - they just have 10oz Equal Flexx balancing beads in them. Aside from a vibration that runs from 10-15mph, they're smooth as glass. I don't have TPMS sensors in these either, because when I tried that on my last truck I could never get them to read reliably through the sidewall. I'm waiting on a Tazer Ram to arrive to disable the warning light -- I didn't order one originally, hoping it wouldn't obnoxiously complain. Wrong.

The spare I bought, which is the same Cooper Roadmaster RM253 LRH tire that I have on the steer axle, was an extremely tight fit but does fit in the stock spare location without requiring modification.

The difference in appearance is extremely subtle - the new wheels look the same as the old, but are 2.5" larger and the tires 1.5" larger, so the wheel well looks slighty more filled out. I gained exactly 3/4" measured at the fenders, so the estimated 1.5" difference is spot on. They must run true to size. Two people I've asked said they look more proportional to the truck, like they should have been from the factory. I can see that.

[image]

cptqueeg

Idaho

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Joined: 04/11/2020

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Posted: 06/06/21 09:55pm Link  |  Quote  |  Print  |  Notify Moderator

jshupe wrote:

cptqueeg wrote:

jshupe wrote:

Ended up reordering these today since the parts are in, except swapped the fronts out for Cooper RM253 due to stock issues there. Also ordered an Ironman I604 on steel spare.

Need the capacity now, because I'm placing a custom flatbed order.


Custom flatbed truck camper? If so what did you get?


Sorry, no, a custom flatbed to put my existing camper on.

97x102" flat bed
- tapered rear corners
- LED lights all around incl headache rack
- no ears on headache rack
- no stake pockets
- no rub rails
- 5/8" D rings welded to side at 1' intervals
- extra 7 way plug on rear driver's side
- two 48x18x18 toolboxes on top of the deck
- two 18x18x18 toolboxes on top of the deck
- two 30x18x18 toolboxes (in front of tires)
- two 18x18x18 toolboxes (behind tires)
- inset nuts for guide rails
- inset nuts for topside toolbox mounts
- guide rails for truck camper
- bolt-on brackets added to topside toolboxes
- recessed gooseneck hitch
- retain spare mount
- retain factory 2.5" receiver hitch
- factory backup sensor relocation
- factory backup camera relocation

I blueprinted the camper and am having the D-ring and toolbox placement, etc, where I want it. Looking forward to seeing how it comes out in a couple weeks.


Very specific requirements. Thanks for the pic.

Sounds like a great build.

n0arp

FT

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Posted: 06/12/21 10:48pm Link  |  Quote  |  Print  |  Notify Moderator

[image]

Use this link for your pictures: http://photoposting.is-great.net/

[image]

* This post was edited 06/14/21 11:23am by an administrator/moderator *

wintersun

Monterey

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Joined: 12/22/2011

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Posted: 06/24/21 05:40pm Link  |  Quote  |  Print  |  Notify Moderator

19.5 tires are overkill on a DRW truck. With my SRW truck I replace the factory tires rated at 3095 lbs with Nitto tires rated at 3750 lbs and so had support for up to 7500 lbs or 4000 lbs of payload with the truck. with the addition of Supersprings my Chevy 2500 was dead level with 4,000 lbs in the bed.

Only if I was going with a camper that had a dry weight of more than 4,000 lbs would I have to decide between DRW or going to 19.5 tires and rims. The 19.5 rims and tires would have cost me more than $3,000 and so not a decision to make for grins.

n0arp

FT

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Posted: 06/25/21 09:57am Link  |  Quote  |  Print  |  Notify Moderator

wintersun wrote:

19.5 tires are overkill on a DRW truck. With my SRW truck I replace the factory tires rated at 3095 lbs with Nitto tires rated at 3750 lbs and so had support for up to 7500 lbs or 4000 lbs of payload with the truck. with the addition of Supersprings my Chevy 2500 was dead level with 4,000 lbs in the bed.

Only if I was going with a camper that had a dry weight of more than 4,000 lbs would I have to decide between DRW or going to 19.5 tires and rims. The 19.5 rims and tires would have cost me more than $3,000 and so not a decision to make for grins.


Lets just say we're heavy enough to either need 19.5s, or to move to wider LRE tires that would also require new wheels, and have several downsides of their own.

The wheels these come with are 17x6, with 235/80r17 tires. With 6" wheels you can't really go any wider, nor much taller since you're starting with an 80 sidewall. Aftermarket 17xWIDER wheels don't seem to exist, or the couple I've found have poor weight ratings (2500lb/wheel), so you have to go to 20s at that point. With 20s, you're looking at new wheels, expensive tires, fitment/footprint issues due to width (too wide to back between standard dually mounts on campers), and perhaps most annoyingly... that all the aftermarket 20" wheels I found are positional, so you can't rotate them to any position or carry a universal spare. Or, you could run adapters and shaved 22.5s, which aren't well suited to these kinds of loads and have a whole set of other issues. Not to mention that all those LRE tires will wear quicker and are comparably fragile. So, there are a lot of valid reasons to look at 19.5s if exceeding the weight capacity for a DRW on OE size tires.

The difference is night and day over the OE. F-450/F-550 and GM/Ram 4500/5500 trucks are DRW and come with 19.5s for good reason.

* This post was edited 06/25/21 10:22am by n0arp *

Grit dog

Black Diamond, WA

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Posted: 06/25/21 10:36am Link  |  Quote  |  Print  |  Notify Moderator

How tall is that giddy up?


2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
2017 Heartland Torque T29

n0arp

FT

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Posted: 06/28/21 07:14am Link  |  Quote  |  Print  |  Notify Moderator

Grit dog wrote:

How tall is that giddy up?


13'

Grit dog

Black Diamond, WA

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Posted: 06/28/21 09:30am Link  |  Quote  |  Print  |  Notify Moderator

n0arp wrote:

Grit dog wrote:

How tall is that giddy up?


13'


Not bad. Looks taller sitting on the flatbed and the solar up top. Our old AF was like 12’-2” sitting in a pickup bed with a full size ( not low pro) AC.

Awesome looking setup btw!

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