LAX is my home base. Never even seen a sizer there. I don't think I've seen a sizer anywhere in the US. When the one-bag rule was still on, I would take my back-pack as my one bag for LHR, so I never had to deal with having to put my standard carry-on in the thing.
The BA site gives dimensions as 22x17.5x9.85in. Do they enforce the 22" religiously when they're in a bad mood? Where the 22s violate the rule is they are really closer to 22 1/2 with wheels, but I don't recollect having issues before with the length? Any wisdom would be appreciated -- AND would appreciate any recommendations for 20"-22" rollers that are proven LHR safe! Thanks.
Thw 22" must include wheels and handle so be careful. Also if your wheelie won't fit into the overhead bin wheels first then a grumpy cabin crew may well insist on checking it at the jetty!