Ok I searched a lot before posting this... Can anyone tell me what the maximum size box I can put on a Countryman? I know I can fit the Thule Sonic L but not sure if I can fit the Thule Force XL. The Force XL is about 84" long.
Any ideas?

Thanks,

Dave

 

I just drove 830 miles one way with a Yakima Skybox 16. Box Outer Dimensions: 81 inches x 36 inches x 15 inches. Stubby antennae is a must or you will need to remove your OEM one. Opening the boot opens but is limited slightly by the rear spoiler. Gas mileage dropped about 1 mpg. No wind noise except when driving next to large semi.

 

Thanks! LOOOOOOOVE the 19's!!!! I wish I knew about the tire and wheel insurance before I got my ride. SO would have upgraded to the 19's!!!!

 

I've got a Yakima Rocketbox Pro 14 on my CM. I pushed it back as far as it would go with the OEM antenna. You can't see it through the windshield--I'd say it sits about as far forward as TJANK's.

 

Have the Thule Ascent 1600 and AeroBars. Rides great and get about 32mpg highway, so does not appear to affect it much.