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Thule Roof Cargo Box Size?

Did you ever find an answer to this?

No, I did not. My cross country skis are 189s. I bought the Yakima Fatcat 6 EVO ski rack. It does the job for skis and is a lot easier to store than a box when not in use. If I plan a trip where the ski rack is not going to cut it then I will revisit this. I really wanted to go the box route because it is so much more versatile than a dedicated ski rack. However, the ski rack is less expensive and meets my current need.
 
Did anyone try the Thule Motion XT XL or Thule Force XT XL? My skis are 183s. I am not sure if there is enough clearance on the rear hatch.

I tried a Yakima Skybox 16 Carbonite but it simply did not fit the crossbars even though Yakima says it fits and the actual measurements say it should fit. The physical box that I tried to put on top of the car could not latch completely on both bars. The spread was about 1/2" too short. I don't know if the guy at the shop screwed up or if there is variance between boxes. Anyone else experience this? For references, Yakima says the box fits spreads of up to 36" and by my measurement the spread on the Model Y is between 35.5" and 35.75".
FWIW - Don't be surprised if the Yakima Skybox doesn't fit. I purchased a Yakima Skinny Warrior roof basket since their website said it would fit. It did not, and Yakima Customer Service confirmed this. Yet, they still list it as compatible on their website. Pretty classic bait and switch to sell those Tesla cross bars.
 
Did you ever find an answer to this? My snowboard will fit the Motion XT L, but I might want to get into cross country skiing, and I'm thinking those skies may be really long, and if I'm already adding a lot of drag, might as well get the biggest box I can.

My roof rack is being installed as we speak at a local Tesla SC, and then maybe over the weekend I'll stop by some Sportsbasement/REI stores to see if I can try a L and a XL size. I can report back. I guess I may have to buy one, put it on the car in the lot to try it, and then return it if it doesn't fit and then try another size. Good thing REI has a good return policy.

I purchased a Motion XT L last week from REI. Roof racks came yesterday and installed quickly (25-30 min). Going to pick up the cargo box now and install. I'll let you know if it works out.
 
Have you mounted the vector alpine yet? I’m considering buying one, but after running some numbers I’m concerned the open hatch will not clear the box.

You can adjust the opening height of the powered liftgate to make it easier to reach or to avoid low-hanging ceilings or objects (for example, a garage door or light):
  1. Open the trunk, then manually lower or raise the liftgate to the desired opening height.
  2. Press and hold the button on the underside of the liftgate for three seconds until you hear a confirmation chime.
  3. Confirm that you have set it to the desired height by closing the powered liftgate, then reopening it.
So if it only interferes at the top of the hatch's range, you might still be able to make it work.
 
So I didn't get the Motion, I got the Force XT L. Installed at REI when I picked it up, only took about 5 min. Veryyyyy easy.

It fits great, could probably get away with the XL if you wanted.

Drove it back on the parkway going about 65 in the rain. Wind noise is definitely noticeable, but not awful.
 

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So I didn't get the Motion, I got the Force XT L. Installed at REI when I picked it up, only took about 5 min. Veryyyyy easy.

It fits great, could probably get away with the XL if you wanted.

Drove it back on the parkway going about 65 in the rain. Wind noise is definitely noticeable, but not awful.

Yeah, I think the Large definitely fits, but hoping to see if anyone got the XL.

Also, what made you go for the Force vs. Motion XT?
 
Yeah, I think the Large definitely fits, but hoping to see if anyone got the XL.

Also, what made you go for the Force vs. Motion XT?

My local REI only had two cargo boxes in stock...the Force XT L and the Yakima carbonite 18 which i've seen some here say it doesn't fit. I could've ordered the motion, but they didn't think it would be in until mid January at the earliest. So that and the couple hundred more in price made the Force the choice for me. Doesn't match the car as well as the motion, but I'm fine with it.

The motion XL is a full 10 inches longer than the force L....might have slight overhang on the front windshield but don't think it would be that bad. I don't see my force L at all through the front windshield.
 
My local REI only had two cargo boxes in stock...the Force XT L and the Yakima carbonite 18 which i've seen some here say it doesn't fit. I could've ordered the motion, but they didn't think it would be in until mid January at the earliest. So that and the couple hundred more in price made the Force the choice for me. Doesn't match the car as well as the motion, but I'm fine with it.

The motion XL is a full 10 inches longer than the force L....might have slight overhang on the front windshield but don't think it would be that bad. I don't see my force L at all through the front windshield.

Thanks for the info!
 
2E724DA1-8B06-4F83-9FC1-049F4C1B02DB.jpeg

Good news! I got the Motion XT - XL and it fit like a charm. I can’t see the front from inside the car, and the hatch still has space to open. I keep my hatch from going fully up anyway because my garage ceiling is low, so not sure if it would clear fully open, but there’s enough moveable adjustment that I’m confident it would work.

I’ll take more photos tomorrow when the sun’s out, but attached is a quick snapshot.
 
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Good news! I got the Motion XT - XL and it fit like a charm. I can’t see the front from inside the car, and the hatch still has space to open. I keep my hatch from going fully up anyway because my garage ceiling is low, so not sure if it would clear fully open, but there’s enough moveable adjustment that I’m confident it would work.

I’ll take more photos tomorrow when the sun’s out, but attached is a quick snapshot.

It fits and it looks great...inspired me to return the force and get the motion XL. It looks to good with the finish, and good to know the XL fits now.
 
It fits and it looks great...inspired me to return the force and get the motion XL. It looks to good with the finish, and good to know the XL fits now.

Yeah, the finish is a perfect match, especially with a black car I guess.

The back of the Motion is sloped outward, whereas the Force was boxier/straighter in the back, this gives the hatch a lot of space to open, so you can actually move the Motion further back (in theory) than the Force.

The glossy finish and the sloped back of the box is what pushed me to spend the extra.

I ended up getting this at an REI as well. I had to call around quite a bit, but finally found one in stock that wasn't too far away (only about 18 miles away). REI has a good return policy, so I knew I could just return it right away if it didn't fit and swap it. I think you'll have no problem returning it, though I hope you can find the Motion XL in stock! The winter is coming, I'm sure everyone's going to swoop them up for snowsports etc.
 
View attachment 618111
Good news! I got the Motion XT - XL and it fit like a charm. I can’t see the front from inside the car, and the hatch still has space to open. I keep my hatch from going fully up anyway because my garage ceiling is low, so not sure if it would clear fully open, but there’s enough moveable adjustment that I’m confident it would work.

I’ll take more photos tomorrow when the sun’s out, but attached is a quick snapshot.

This looks great--thanks for your report and uploading the pic of the Thule Motion XT XL. I have the roof rack installed on my MY and would like to get a cargo box but I am still researching the options. Have you considered installing it facing backward for possible efficiency gains?

Tesla Model 3 with roof-rack box gets much better range if you flip box around - Electrek
 
This looks great--thanks for your report and uploading the pic of the Thule Motion XT XL. I have the roof rack installed on my MY and would like to get a cargo box but I am still researching the options. Have you considered installing it facing backward for possible efficiency gains?

Tesla Model 3 with roof-rack box gets much better range if you flip box around - Electrek

Definitely not going to mount it backwards. I've seen the same articles and people talking about it, but the manufacturer literally has instructions not to mount it backwards. I'm not going to risk it.

If someone comes out with very scientific and researched results, then sure, I'll go for it, but just seems too far-fetched that it would work better totally backwards from what companies like Thule/Yakima designed them for.

I'll buy a new box in the future if they come out with a more teardrop design and show clear signs of improved efficiency.

At this point, I know it's going to increase drag, and that's a compromise I'm fine with.
 
This looks great--thanks for your report and uploading the pic of the Thule Motion XT XL. I have the roof rack installed on my MY and would like to get a cargo box but I am still researching the options. Have you considered installing it facing backward for possible efficiency gains?

Tesla Model 3 with roof-rack box gets much better range if you flip box around - Electrek
Do you have the whistling wind noise too on your racks when you drive? I had to take mine off between use due to the annoying noise when driving.
 

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