Did the research on hitch mount bike racks for 4 bikes, chose a (wheels rest on) platform type bike rack, and settled on
QuikRStuff Mach2. Very pricey but very well engineered, modular from 1 to 4 platforms, completely toolless to use and expand/shrink for more/less bikes, all-metal (zero plastic), and looks to last forever - I'll have to pass this to my grandchildren to recoup the cost [emoji14] - but again, excellent quality.
When reversing, the proximity sensors will be on as the all-metal rack is inches away (with no fear of bikes ever touching the rear). When only 2 platforms are present, empty, and folded up, it does not block the rear camera should one choose to leave the rack on the hitch. Zero wobbling with 4 bikes due to their unique hitch tightening construction. Am extremely happy with the purchase.
Other than the price the only other issue is a 6 month manufacturing backlog! While the rack does tilt down for hatch clearance (may be heavy and awkward for 4 bikes for some), I'm contemplating getting a 3rd party swinging hitch for stuff-the-trunk-full roadtrip convenience but will have to $$$ave up for that - I have some time while the kids get old enough for that.
View attachment 174411
View attachment 174412
View attachment 174413
View attachment 174414