User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 02-19-2021, 11:29 AM #1
Sea_ledford Sea_ledford is offline
Member
 
Join Date: Apr 2019
Location: Galveston, TX
Posts: 47
Sea_ledford is on a distinguished road
Sea_ledford Sea_ledford is offline
Member
 
Join Date: Apr 2019
Location: Galveston, TX
Posts: 47
Sea_ledford is on a distinguished road
Roof Load Rating

So after seeing this video from Ronny Dahl:
https://www.youtube.com/watch?v=r32xd9z4SZ4&feature=youtu.be


I'm back to wondering about a 4runners actual roof load rating. The only thing in the 5th gen manual says is "do not exceed 120 lbs cargo weight on the roof luggage carrier" which seems to me to speak to the limits of the OEM cross bars. It doesn't even mention roof load limits in the 4th gen manual. There doesn't seem to be any differentiation between the standard OEM rack and the TRD Pro rack, which must weigh more. If the roof load limit is only 120 lbs, there should be a note that the pro rack can only hold 115 lbs (or whatever the weight difference is), but there isn't.

I've been digging through posts and found one thread where somebody contacted Toyota to ask, and was basically told "modifying your car is bad, the roof rack rating is 120 lbs," lots of references to 300 lbs dynamic / 600 lbs static but no reference for where those numbers came from. Another common one I've seen is 150. Again no idea where it came from.

Rhino Rack has 220 lbs as a roof allowance for 4runners. I haven't found any other mfg say anything aside from "our rack holds XXX lbs, don't exceed your mfg rating though." If they even have that.

I've also found posts that say the roof load limit is the weight of the car, since it is designed to not collapse during a roll over. But where the rack ties in may not be the same structure as the "roll bar," although it should be.

Sooo, what is the MFG rating? Are we really supposed to stick with 120 lbs? By the time you add a full size rack, you'll be down to 30 or 40 lb capacity. It seems ridiculous that this isn't a published number. I guess that goes along with the unknown fording depth. The problem with making something so conservative, is that everyone will ignore it because it is clearly overly conservative, but now the actual limit is unknown.
__________________
2019 ORP
Dobinsons suspension- Front:C59-314 / GS59-700 Rear:C59-325 / GS59-701
SSO Slimline bumper with Warn VR Evo 10-S, LFD Offroad crossbars
Diode Dynamics SS3 fogs,GE Megalight Ultra +130 low beam
Sea_ledford is offline   Reply With QuoteReply With Quote
Old 02-19-2021, 12:11 PM #2
edgesalon's Avatar
edgesalon edgesalon is offline
Member
 
Join Date: Jan 2010
Posts: 331
edgesalon is on a distinguished road
edgesalon edgesalon is offline
Member
edgesalon's Avatar
 
Join Date: Jan 2010
Posts: 331
edgesalon is on a distinguished road
thanks for sharing the video very eye opening

Henry B. answered on April 10, 2020
The toyota 4runner's roof rack has a 300lb driving load capacity. the static load capacity is up to 600lbs.
but Toyota says 120Lbs capacity

I think that the roof rack ratings are BS to start with, I see a lot of Rigs lifted and full rack on top and Tents and other things loaded on the rack i can only think that is way to top heavy for me and not knowing how safe that is.
hope that we do get some concrete weight and capacity for our Rigs so we know that we are safe on road and offroad.
once agin thanks for the Video

here is Tyler thompson video:

https://www.youtube.com/watch?v=eMx232haRyo
__________________
18 FunRunner

Last edited by edgesalon; 02-19-2021 at 12:35 PM.
edgesalon is offline   Reply With QuoteReply With Quote
Old 02-19-2021, 12:13 PM #3
91foxbody 91foxbody is offline
Member
 
Join Date: Dec 2020
Location: PNW
Posts: 223
91foxbody will become famous soon enough 91foxbody will become famous soon enough
91foxbody 91foxbody is offline
Member
 
Join Date: Dec 2020
Location: PNW
Posts: 223
91foxbody will become famous soon enough 91foxbody will become famous soon enough
I don't see how it's not more than 135 considering most large soft shell RTTs weigh more than that themselves.
91foxbody is offline   Reply With QuoteReply With Quote
Old 02-19-2021, 12:21 PM #4
fkheath fkheath is online now
Member
 
Join Date: Sep 2020
Location: Utah
Posts: 905
fkheath is just really nice fkheath is just really nice fkheath is just really nice fkheath is just really nice fkheath is just really nice
fkheath fkheath is online now
Member
 
Join Date: Sep 2020
Location: Utah
Posts: 905
fkheath is just really nice fkheath is just really nice fkheath is just really nice fkheath is just really nice fkheath is just really nice
I think your question is if there is a difference between the rack weight rating and the roof weight rating. The mounting points on the 4Runner are quite sturdy and can clearly hold more weight than what the rack rating is (120-150 lbs). BTW, the TRD rack does not really weigh that much more because it is made of aluminum and there are no rails.

Also, you can easily add more cross rails which should increase the weight carrying capacity of any rack. I added two more cross rails to my TRD rack.

Vehicle manufactures are always cautious on what they tell you. Also, keep in mind that any weight on the roof is going to affect the stability of the vehicle, especially the tendency to roll over or move sideways in a cross wind. I believe that is why Toyota has such a low weight rating for their racks.

Traveling in really remote areas (desert of north Africa, northern India, central China) you see many vehicles with massive loads on the roof. I once was on a tour to northern India, and our van had a fuel bladder (diesel in this case) on the roof that had to weigh at least 500 lbs (fuel stations were hundreds of miles apart), plus much of our luggage was also on the roof.

Clearly the roof can hold a lot of weight, but the questions are: do you need to and do you really want to given the stability issues?
fkheath is online now   Reply With QuoteReply With Quote
Old 02-19-2021, 12:33 PM #5
Jeremy556's Avatar
Jeremy556 Jeremy556 is offline
Senior Member
 
Join Date: Jan 2012
Location: Fruita, CO
Age: 41
Posts: 3,806
Jeremy556 is a glorious beacon of light Jeremy556 is a glorious beacon of light Jeremy556 is a glorious beacon of light Jeremy556 is a glorious beacon of light Jeremy556 is a glorious beacon of light
Jeremy556 Jeremy556 is offline
Senior Member
Jeremy556's Avatar
 
Join Date: Jan 2012
Location: Fruita, CO
Age: 41
Posts: 3,806
Jeremy556 is a glorious beacon of light Jeremy556 is a glorious beacon of light Jeremy556 is a glorious beacon of light Jeremy556 is a glorious beacon of light Jeremy556 is a glorious beacon of light
You're not going to get an answer because there are no standards or ratings for what is considered safe when you change the COG by adding weight way up high.

The roof will support thousands of pounds
Jeremy556 is offline   Reply With QuoteReply With Quote
Old 02-19-2021, 12:50 PM #6
LandCruiser's Avatar
LandCruiser LandCruiser is offline
Senior Member
 
Join Date: Feb 2013
Location: East Bay
Posts: 4,591
Real Name: Sparky
LandCruiser has much to be proud of LandCruiser has much to be proud of LandCruiser has much to be proud of LandCruiser has much to be proud of LandCruiser has much to be proud of LandCruiser has much to be proud of LandCruiser has much to be proud of LandCruiser has much to be proud of LandCruiser has much to be proud of LandCruiser has much to be proud of
LandCruiser LandCruiser is offline
Senior Member
LandCruiser's Avatar
 
Join Date: Feb 2013
Location: East Bay
Posts: 4,591
Real Name: Sparky
LandCruiser has much to be proud of LandCruiser has much to be proud of LandCruiser has much to be proud of LandCruiser has much to be proud of LandCruiser has much to be proud of LandCruiser has much to be proud of LandCruiser has much to be proud of LandCruiser has much to be proud of LandCruiser has much to be proud of LandCruiser has much to be proud of
This whole fad of putting a refugee tent, spare tires, and heavy ass recovery gear up high and then driving around town and the highway because ADVENTURE CAN STRIKE AT ANY TIME!!! is dumb as hell.
__________________
Old and (c)rusty.
LandCruiser is offline   Reply With QuoteReply With Quote
Old 07-11-2022, 02:50 PM #7
Fifteen-4's Avatar
Fifteen-4 Fifteen-4 is offline
Junior Member
 
Join Date: Nov 2021
Location: Blue Ridge, GA
Age: 54
Posts: 10
Real Name: Bryan
Fifteen-4 is on a distinguished road
Fifteen-4 Fifteen-4 is offline
Junior Member
Fifteen-4's Avatar
 
Join Date: Nov 2021
Location: Blue Ridge, GA
Age: 54
Posts: 10
Real Name: Bryan
Fifteen-4 is on a distinguished road
"ADVENTURE CAN STRIKE AT ANY TIME!!!"
This is true. I'm new to the sport/hobby of overlanding and off-roading, less than a year, and so far, every adventure I've been on, I planned for. Other than the occasional "I wonder where that dirt road goes" detour. I haven't been caught off-guard without the necessary recovery gear, 30 gallon water tank, 10 extra gallons of fuel, hi-lift jack, shovel, traction boards, and so on. I get shitty enough gas mileage as it is without adding 800 pounds of gear to my trips to Home Depot.
I typically roll with a tow strap, a couple soft shackles a bottle jack, lug wrench and a spare tire.
When heading out to actually overland, all that gear gets added then. I think people just like to look "rugged and ready" when mall crawlin', which is fine if that's what you're into.
__________________
You may go fast, but I can go anywhere.
Fifteen-4 is offline   Reply With QuoteReply With Quote
Old 07-11-2022, 04:08 PM #8
lewdog998's Avatar
lewdog998 lewdog998 is offline
Member
 
Join Date: Feb 2021
Posts: 511
lewdog998 is a glorious beacon of light lewdog998 is a glorious beacon of light lewdog998 is a glorious beacon of light lewdog998 is a glorious beacon of light lewdog998 is a glorious beacon of light lewdog998 is a glorious beacon of light
lewdog998 lewdog998 is offline
Member
lewdog998's Avatar
 
Join Date: Feb 2021
Posts: 511
lewdog998 is a glorious beacon of light lewdog998 is a glorious beacon of light lewdog998 is a glorious beacon of light lewdog998 is a glorious beacon of light lewdog998 is a glorious beacon of light lewdog998 is a glorious beacon of light
a 1 inch thick 4 x 8 sheet of plywood screwed directly to your roof will allow you to carry two pallets of potting soil about 1300lbs. Use marine grade plywood and you wont have to paint it.
__________________
2020 TRD Pro in Super White
RCI full alum skids - C4 Fab sliders-Diff breather mod-Upper grill hidden light bar- Auxbeam switch panel- DD reverse / turn light LED mod - Front Runner 3/4 Rack - 285/70 Dura tracs - Maxi Trac onboard air - Eibach TRD Pro lift springs - Front Runner 3/4 rack - Hefty Fabworks Lo-pro bumper - Warn VR Evo 12S. Dirt King UCAs
Man is born free, yet he is everywhere in chains....
lewdog998 is offline   Reply With QuoteReply With Quote
Old 07-11-2022, 04:21 PM #9
USStrongman
Guest
 
Posts: n/a
USStrongman
Guest
 
Posts: n/a
His video is pointless. Let me explain.

A few things to consider. Roof rack ratings are not REQUIRED by the NHTSA nor the DOT. Its not required. You know what is required? Rollover safety ratings. Static roof rating numbers are not required. Roof sustainability and integrity in the event of a rollover are. So where does that leave "Roof Rack Ratings"? No where. The legal teams for every manufacturer develop a magic number that is plausible for use as a rack for "everyday use", but not for what overlanding, camping, etc consumers really put them through.

The primary issue with his rack on that truck was two fold; aerodynamic uplift by the equipment on the rack (2 sets of MaxTrax took up at least 60% of the sq' foot surface) and due to Rhinos design... sitting many inches above the roof line combined with a terrible fastening design by Rhino for that rack. Why did it fail? Because it was too heavy? The heavy equipment was rocking side to side offroad and pulling the rack apart? If that's the case, then the video fails conclusively for its reasons. He solely focused on downward weight, which wasn't the problem. The roof did not fail, the rack did.

Of the bajillions of roof racks on road and off road vehicles, how many have ACTUALLY failed? The Jeep crowd complains about the potential for failure on gutter style mounts. I repeatedly asked to show me one that failed. Crickets. I ran a gutter mount for 4 years and mounted as much as 270lbs on it throughout CA, AZ, NM, TX, CO, UT, ID, MT, NV, LA. Never an issue. Removed the rack and added a different design at 40k miles and once I took the gutter clamps off, the only noticeable issue was paint fade outside the clamping zone. Texas sun.

The bottom line is he is wrong. His logic in a 1 dimensional world kinda makes sense, but in this reality, it just doesn't. Aerodynamics are the primary culprit for potential failure.... of course second to design and construction. Look at the current crop of laser cut racks for 4Runners. Most are now putting a low slung deflector above the windshield. Two fold. Reduces noise to keep passengers happy but more so, it deflects air up and away from the cargo on the rack, ie; the potential lift issue with huge square foot roof top tents, storage cases, spare tires, etc..
  Reply With QuoteReply With Quote
Reply

Tags
lbs , load , rack , rating , roof

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Tire Load Rating davidbeitz 5th gen T4Rs 15 12-04-2020 02:21 AM
Speed rating and load rating Gecko123 4th Gen T4Rs 4 11-01-2012 04:54 PM
Duratrac load rating C or D shadow4 3rd gen T4Rs 12 11-03-2011 01:54 PM
What load rating you all running? Augdog1964 5th gen T4Rs 12 01-26-2011 07:08 PM
Roof Rail Load Rating GJBenn85 4th Gen T4Rs 5 06-16-2008 12:22 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 09:16 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2022 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2022 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2022 DragonByte Technologies Ltd.
***This site is an unofficial Toyota site, and is not officially endorsed, supported, authorized by or affiliated with Toyota. All company, product, or service names references in this web site are used for identification purposes only and may be trademarks of their respective owners. The Toyota name, marks, designs and logos, as well as Toyota model names, are registered trademarks of Toyota Motor Corporation***Ad Management plugin by RedTyger
 
Copyright © 2020