Paul Stanger
Has anyone used a spare tire straddling bike rack like this?  I would put on the bumper support brackets to handle the extra weight and extra torque.  We have 155xl, towed with Chey Tahoe using Anderson WDH system.
[_SL1500_]
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vdubadm
Great question, I would love to know if someone has used it as well! I also have a 155 and Id like to have a bike rack [smile] 
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Calabrio
I wouldn't trust that bumper with any more weight, especially that high up.
Have you considered putting the bike rack in the front, over the propane?

Something like this guy did:
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pcovers
Here is a pic of our setup on the 166. If the bumper is the same on the 155 as it is on the 166, it is a very heavy duty bumper that is welded to the frame on three places. Very stiff support to the frame.

IMG_20170704_065029.jpg 
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mikes
Beware, thin wall box section is not "heavy duty." They can't take the twisting.

Here's a 177:

[image] 
Mike
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Alabama Jim
Yikes, Mikes, those bicycles have bi cycled themselves right off the road.  Thanks for sharing.  That is good information.
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Paul Stanger

Mike, we are mounting reinforcements to take weight and torque off the bumper welds.  Will test locally before our Great Lakes tour coming up in August.  


mikes wrote:
Beware, thin wall box section is not "heavy duty." They can't take the twisting.

Here's a 177:

[image] 
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Paul Stanger
https://www.mount-n-lock.com/Installation-Guides/4SQUARE_SafetyStruts_Selection_Guide.pdf .  Will be installing these Wed or Thurs.
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pcovers
mikes wrote:
Beware, thin wall box section is not "heavy duty." They can't take the twisting.

Here's a 177:



I see where the weakness is now. Looks  like the weld held but the metal did not. I will be adding the mount-n-lock supports. Surprised this is not more common or more discussed as big risks. I have never in my travels or conversations heard anyone talk about this. Thanks.
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Paul Stanger





20170709_152942_001.jpg 

These are the safety struts I used to reinforce the bumper welds.  Then we mounted a Swagman over the spare 2 bike rack.  This changed tonque weight slightly so rearranged how we load, moving a heavy collapsible shelter from rear cargo area to area in front of axle.  Just took a trip of over 300 miles through mountains of Vermont and New York.  During the trip we drove twisty mountain  roads, dirt roads and interstate highways at 65 mph.  No handling issues and the bikes did not mover!  If you want to load more on your rear bumper, spend the 60 bucks and reinforce the bumper welds.  his transfers the weight and torque of the bike rack or cargo platform from the bumper to the trailer frame.

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Dave
I followed Paul's recommendation and installed the "4 square Safety Struts" to my rear bumper as an added safely precaution carrying our two bikes. When I welded the 4" receiver on I could see how thin the bumper metal was.  Our bikes each weighs 30 lb and our bike rack weighs about 30 lbs.  That's about 100lbs hanging on the bumper bouncing around.  If you have your spare tire on it that's another 50 lbs. I just imagined what would happen if they fell off on a highway.  Not good. IMG_20170811_102339708_HDR-2672x1503.jpg 
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