[Vano]

I got a genuine Hyundai roof rack for the 2022 Tucson with the sun roof. The package includes printed installation instructions for vehicles with and without the sun roof. The only difference according to the instructions is in the position of the mounting brackets to allow the sun roof to slide freely. Otherwise, the process is the same.
The printed instructions tell you to torque the mounting bracket bolts to 6N.m or 53 lbf, which is an insane amount of torque for 6M1.0 bolts of grade 8.8. Following the instructions, while trying to tighten the bolts, the bolt failed and I had to find a replacement. See the pics.
Interestingly enough the package with the crossbars included a QR code to the online version of the installation instructions which said to torque the bolts on one side to about 26 lb-ft and on the other to 53 lbf. Though all bolts are the same and even 26 lbf is way too much for these bolts.
I wonder if others installed genuine Hyndai crossbars and what torque did you use to secure the rack?

 

[Vano]

Oh, my... I just realized that it's lbf-in rather than lbf-ft torque 🤦‍♂️. Seems like the user's mistake .

 

[Tampa8]

Oh, my... I just realized that it's lbf-in rather than lbf-ft torque 🤦‍♂️. Seems like the user's mistake .

Beat me to it. That was my question. Your initial instincts were correct that would be an insane torque for that bolt.

 

[Captain Blight]

But.............

The Hyundai roof racks are made by Thule. (And cost half as much.) The instructions for the Thule Wingbar call for 4 Nm of torque, and the Thule kits come with a little torque tool that automatically ratchets at 4 Nm. Thule doesn't make a 6 Nm torque tool. I have a query into Thule to try and find out if a 6 Nm tool is available or if the 6 Nm spec is possibly wrong. So far no response.

 

[mungo544]

Inch pounds, not foot pounds I believe.

Newton Meters (N-m)	Inch Pounds (in-lbs)
6 =	53.10

 

[mungo544]

What is 50 inch pounds converted to foot-pounds?


Inch-pounds to foot-pounds chart

in-lb	ft-lb
50	4.167
60	5
70	5.833
80	6.667

Pretty understandable error. No harm, no foul.

 

[Starboy]

Oh, my... I just realized that it's lbf-in rather than lbf-ft torque 🤦‍♂️. Seems like the user's mistake .

Personally 8 would use the feel torque method on that installation. I would make them tight but not too tight.

 

[Captain Blight]

Hyundai Roof Rack Torque Spec & Key - FYI

The Hyundai roof racks are made by Thule (but cost half as much). For the panoramic roof the written instructions call for torquing the feet to 6Nm. The generic Thule wingbar racks spec a torque of 4Nm and include a 4Nm ratcheting torque key. The Hyundai roof racks just come with an allen...

www.tucson-forum.com

 

[Captain Pete]

I tighten the bolts until the feel tight using my hands and the provided allen key. A quick test to shake the rack to make sure it is firmly attached to car when done. BTW I do not leave my roof racks on the car when not using them. They are very easy to put on and take off so I keep them off most of the time (quieter ride with the sunroof open.