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Discussion Starter #1
The L model does not appear to have any optional factory roof rail install options, and I had searched/read here that the base Sienna model may not have the necessary rack support components under the sheet metal to support one. The dealer says they have an aftermarket installer that could put one in but mentions strange limitations like 110lbs and no lenthy cargo (like a kayak or long cargo box) due to wind lift.

So I was wondering if anyone has install a permanent rack on an L, or found a removeable solution (Thule/Yakima don't list any naked roof options for the Sienna) that worked well. I don't want the installer drilling holes in the roof only to later find that pushing/pulling on the rack will flex the roof's sheet metal.

Thanks.
 

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If you search this forum, you might find a past thread where the owner of a Sienna base L wanted to install roof rails. I don't recall if he was able to obtain the roof reinforcing members that were needed to install the OEM roof rails.

The base L Sienna is quite rare from my experience. I always notice other Sienna and I've seen only a handful of base L's on the road. One base L I saw recently had the regular Sienna roof rails which means either its possible to install them outside the factory or that they are available as a special order factory option.

Is there any chance you could trade your L for an LE?

Edit: I saw in another thread that you are only considering a Sienna L. Don't do that. Buy at least an LE that has what you really need. Geez.
 

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Would like to stay with the L for reasons mentioned in the other thread.

These are the other threads I saw earlier, but they seemed old.

https://www.siennachat.com/forum/15-general-discussion-gen-2/4854-installing-oem-factory-roof-rack.html

https://www.siennachat.com/forum/40-general-discussion-gen-3/18155-just-got-2015-sienna-l-i-want-roof-rack-help.html

Just try to see if anyone has discovered a good solution since then. Worst case is that I use foam kayak blocks resting on the roof with straps running through the front door frames and rear windows. Best case is I have set Thule towers that rest on a rubber pad on the roof edge, and they just need a 90-ish degree corner to grab onto in the door/window frame (1st and 3rd row windows).
 

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I had the same question as you, and I found that going to a place like rack attack would be your best option if you want an after-market roof rack. They do drill holes in your roof to install the rails. However, with the number of bolts used to secure it and the length of the rail that the weight is spread across, I don't think that it would be flexing your sheet metal that much.

BTW: I wanted to get an L to save a few thousand dollars, but couldn't find one, so I got an LE. The creature comforts that were included are really nice, and the roof rack isn't that great. Whenever I load it up the middle sags, causing the end caps to lift up (which does flex the sheet metal slightly, but hasn't left any marks). If you look at the Gen 2 siennas, they have a support in the middle of the roof rail that I believe would reduce this problem. Currently I am trying to think of a solution that would have a similar effect... maybe a block of wood with an old bike tube... but im not sure
 

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Re: 2018 Base L model - Roof Rack Options

I had the same question as you, and I found that going to a place like rack attack would be your best option if you want an after-market roof rack. They do drill holes in your roof to install the rails. However, with the number of bolts used to secure it and the length of the rail that the weight is spread across, I don't think that it would be flexing your sheet metal that much.

BTW: I wanted to get an L to save a few thousand dollars, but couldn't find one, so I got an LE. The creature comforts that were included are really nice, and the roof rack isn't that great. Whenever I load it up the middle sags, causing the end caps to lift up (which does flex the sheet metal slightly, but hasn't left any marks). If you look at the Gen 2 siennas, they have a support in the middle of the roof rail that I believe would reduce this problem. Currently I am trying to think of a solution that would have a similar effect... maybe a block of wood with an old bike tube... but im not sure
Thanks for that info... interesting to hear the OEM end caps lifting a bit under load.

So I spoke to the dealer's installer and they were going to use a Perrycraft Aventura which has the 110lbs and 'no-long-cargo' limitations, but the limitations appear due to the cross bars - the website lists an alternative cross bar for 220lbs and without the cargo length restriction. However, even more interesting is another option for the Sienna from Dynasport, which appear to mount outside of the vinyl strip (OEM is on inside), or along the edge of the roof which feels like much more substantial metal, and where I'd position a Thule tower to rest on. However, mounting along the edge may not look as nice, and the stronger MB cross bar overhang might have some head-bumping risk, so a few things to consider. Still may try to jury rig a Thule set-up first though.

Anyways, here's the link to some aftermarket Sienna L-model options for anyone interested:

http://www.perrycraft.com/c-10911-2016-2017.aspx
 

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Re: 2018 Base L model - Roof Rack Options

Thanks for that info... interesting to hear the OEM end caps lifting a bit under load.

So I spoke to the dealer's installer and they were going to use a Perrycraft Aventura which has the 110lbs and 'no-long-cargo' limitations, but the limitations appear due to the cross bars - the website lists an alternative cross bar for 220lbs and without the cargo length restriction.

Even with factory roof rails and the factory installed roof reinforcement structure to support them, the Sienna roof rack capacity is limited to only 150 lbs. From the 2018 Toyota Sienna owners manual, page 208: "Do not exceed 150 lb. (68 kg) cargo weight on the roof luggage carrier".


Van roofs can collapse from overloading. I've seen it done on a rental van and its not just a matter of popping the roof back up.



Trailers are useful for carrying heavy or bulky loads. My 4'x8' utility trailer is 32 years ago and still good as new. I've towed it thousands of miles and it's weight capacity is higher than most pickup trucks.
 

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I'm an owner of a car that doesn't have the necessary components for roof rails too. Don't worry, this problem can be solved. After hours of searching on internet I have found https://toolsspecialist.com , and there is written how to install the roof rails, and which ones are better to buy. Here you can find any explanations about roof rails.
 
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