roof rack weight limits

My guess is the roof rack rating is a combination of many things, least of which is:

-Weight the roof can support
-Weight the rack can reliably support
-Weight that won't significantly affect center of gravity of the vehicle
-Weight that can be reliably secured/retained in the event of an accident (assuming proper tie-down)
 
So if replacing the factory roof rack with a Gobi or Baja rack, you can carry significantly more weight, correct?

The weight limitation in the factory rack is more the rack itself rather than the mounting points or the roof?


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I added an extra crossbar several years ago, that spreads the weight out to 6 points, rather than 4. I used to load a lot of plywood and other lumber, but now just have a loaded cargo carrier on top. I reinforced the cargo box with angle metal from front to rear because that's how I roll. I have never had any problems.
 

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Sorry to dig up an old thread but.....

I'm getting ready to pull the trigger on a RTT that weights 145lbs. I know that's over the recommended weight for the rack, but would adding an extra crossbar alleviate that since the crossbars appear to be the limiting factor?

I really don't want to fork out another grand for a new rack that's going to be entirely used up by the tent.

Any other suggestions?

The weight limit of 145lbs or (160lbs or whatever) is for the factory crossbars NOT the factory rails. The cross bars are the weak point of the OE Roof system.

I had my RTT Tepui Autana Ruggedized (so not the lightness one) on the factory rails, family of 3 (2 adults and a 4 year old) with absolutely no problems for approx 6 trips and over 5000 miles. (left it on for daily driving in between trips)

I have since upgraded but the point reminds you totally can do it, just don't use the cross bars, they snap under light load. Their (Crossbars) "structure" is based off their "flexing". If you notice as they just sit on our trucks there's always a nature bow to them. and it's when they flatten when they gain their strength. That time of structure is not ideal for RRT as the weight is distrued differently.


Hope this helps! RRT are the best!
 
Sorry to dig up an old thread but.....

I'm getting ready to pull the trigger on a RTT that weights 145lbs. I know that's over the recommended weight for the rack, but would adding an extra crossbar alleviate that since the crossbars appear to be the limiting factor?

I really don't want to fork out another grand for a new rack that's going to be entirely used up by the tent.

Any other suggestions?

I'd also recommend you take into consideration that that RTT isn't going to serve much of a purpose if people aren't going to be sleeping in it, which for 2 folks would be another ~350lbs of beef. That being said I've seen a couple folks mount their RTT to a plywood base and am yet to hear of a 4R crushing under the weight. I can't attest personally to it though.
 
So that Static weight limit of the ROOF of the 4runner is 600lbs. The Dynamic (moving/driving) is 300lbs.

95% of the RRT are under 300lbs the only ones that are MORE are GIANT ones that require 3 cross bars. Which that size tent shouldn't go on our cars as with 3+ adults you'll plus the roofs 600lb static limit.



just think of a Subaru can handle a RRT with 2 adults.. there's NO WAY our 4runner can't just saying more.. =D
 
The weight limit of 145lbs or (160lbs or whatever) is for the factory crossbars NOT the factory rails. The cross bars are the weak point of the OE Roof system.

I had my RTT Tepui Autana Ruggedized (so not the lightness one) on the factory rails, family of 3 (2 adults and a 4 year old) with absolutely no problems for approx 6 trips and over 5000 miles. (left it on for daily driving in between trips)

I have since upgraded but the point reminds you totally can do it, just don't use the cross bars, they snap under light load. Their (Crossbars) "structure" is based off their "flexing". If you notice as they just sit on our trucks there's always a nature bow to them. and it's when they flatten when they gain their strength. That time of structure is not ideal for RRT as the weight is distrued differently.


Hope this helps! RRT are the best!

Thanks for the info.

What crossbars did you use when it was on the oem rack?
 
I just looked at mounting system for the RTT I want and it's mounting rails run front to back and are separated by about 1/3 of the width of the tent. I'm definitely going to have to use crossbars. I guess I'm going to have to find an aftermarket solution....
 
I just looked at mounting system for the RTT I want and it's mounting rails run front to back and are separated by about 1/3 of the width of the tent. I'm definitely going to have to use crossbars. I guess I'm going to have to find an aftermarket solution....

What rtt is it? Are you buying new or buying used? There shouldn't be any reason why you can't use the standard mounting systems for rooftop tents and our Factory rails. I haven't seen a tent that mounts differently. The majority of all the rooftop tents are coming from the same factories in China. They are just made two different specifications and they're backed by different companies warranties but let me know what company you're going with and I'll be able to tell you if it works or not and how to make it work
 
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What rtt is it? Are you buying new or buying used? There shouldn't be any reason why you can't use the standard mounting systems for rooftop tents and our Factory rails. I haven't seen a tent that mounts differently. The majority of all the rooftop tents are coming from the same factories in China. They are just made two different specifications and they're backed by different companies warranties but let me know what company you're going with and I'll be able to tell you if it works or not and how to make it work

Mostly likely this one:

Evasion ? James Baroud USA

Or the discovery. Both mount the same way. There is a picture of the mounting rails about halfway down.

I'm looking at aftermarket crossbars that will attach to the factory rails, but I'm not thrilled about that solution. I appreciate any advice.
 
haha poop.. i guess i was really speaking about soft tents not hard tents... .sooo My percents were off.. lol.


ya you'll have to like Thule, Yakima or Rhino bar or something similar


my bad =(
 
Mostly likely this one:

Evasion ? James Baroud USA

Or the discovery. Both mount the same way. There is a picture of the mounting rails about halfway down.

I'm looking at aftermarket crossbars that will attach to the factory rails, but I'm not thrilled about that solution. I appreciate any advice.
JB? Baller!

The weight limit of 145lbs or (160lbs or whatever) is for the factory crossbars NOT the factory rails. The cross bars are the weak point of the OE Roof system.

I had my RTT Tepui Autana Ruggedized (so not the lightness one) on the factory rails, family of 3 (2 adults and a 4 year old) with absolutely no problems for approx 6 trips and over 5000 miles. (left it on for daily driving in between trips)

I have since upgraded but the point reminds you totally can do it, just don't use the cross bars, they snap under light load. Their (Crossbars) "structure" is based off their "flexing". If you notice as they just sit on our trucks there's always a nature bow to them. and it's when they flatten when they gain their strength. That time of structure is not ideal for RRT as the weight is distrued differently.


Hope this helps! RRT are the best!
This does help! Thanks for the info, this is exactly the answer I was looking for.
 

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