Weight capacity for gutter mount

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

Joined
Apr 13, 2013
Threads
145
Messages
1,703
Anyone tested how much weight the gutters can handle with 3 or 4 brackets on each side?
 
It is not unheard of to see a couple hundred pounds or maybe even more up there. There is no published number. It is a high-profile top-heavy vehicle to begin with so bear that in mind.

Vehicles with high roof loads will develop cracks in the quarter panels at the beltline crease right behind the rear door openings. Mine is cracked on both sides. This is an old photo, the crack is larger now.

Copy%20of%20pillarcrack.webp
 
Thanks Dan, how about for the folks with RTT, anyone with RTT have any cracks going on?
I ask bc I have plans to buy a RTT in the future.
 
I have those same cracks and there is never really any load on my roof

I use to have 4 thule gutter bars on my roof and I had a lot of weight up there on more than one occasion.

They will hold a RTT no problem and alot more
 
I have those same cracks and there is never really any load on my roof

I use to have 4 thule gutter bars on my roof and I had a lot of weight up there on more than one occasion.

They will hold a RTT no problem and alot more

The cracks have shown up in vehicles that have not had high roof loads but have been agressively wheeled and flexed. Big racks speed up the process.
 
The cracks have shown up in vehicles that have not had high roof loads but have been agressively wheeled and flexed. Big racks speed up the process.


Now that I believe

Because I did not have any cracks when I got my rig now I do

From hard wheeln of course;)
 
Thanks Dan, how about for the folks with RTT, anyone with RTT have any cracks going on?
I ask bc I have plans to buy a RTT in the future.

An RTT is essentially a roof rack with a tent attached to it. The same roof-loading principles apply. That roof load could easilly exceed 400 lbs but the vehicle is not bouncing down the road.


Well, I suppose it could be bouncing when it was stationary........:o
 
Fortunately, most RTTs are relatively lightweight. Some are even streamlined. I suspect if that's all that's up there, it will equal about 0.25 Rubicon Trails over the lifetime of the RTT.:)
 
Well, I suppose it could be bouncing when it was stationary........:o[/QUOTE]

I'm always gonna make it bounce, one way or another!! :censor:
 
For comparison. If I recall correctly, when working with Mercedes-Benz on the militarized G-Wagon for the Canadian army it had a max load rating of 100 kgs not incl the weight of the actual full length metal roof rack. That said, I've personally been on the roof rack with one or two good sized guys without issue. Like everything in life, there is cause and effect, and as mentioned one should expect some consequences when adding hundreds of pounds on what is essentially thin sheet metal, especially when subjected to elevated g-forces when off-roading
 
I love big racks, I cannot lie, when a rig rolls in with a big rtt, I get sprung!
 

Users who are viewing this thread

Back
Top Bottom