I've never owned a Briggs and Riley, but I remember that the employees at luggage stores all told me that they would personally buy a Briggs and Riley themselves. The Big Three US Airlines are 23 x 35 x 56 cm. And the RIMOWA Cabin are 23 x 40 x 55. So technically the RIMOWA is too wide. However, I've never had a problem on USA airlines. But... If the airline puts me into the sizing box, yes, it'll definitely stick out. Thank you Orahu for the kind words. Keep on traveling!!!