Are wireless backup cameras reliable enough for towing a trailer or RV?

Mostly yes for short trailers, with caveats. Across r/GoRVing, r/TruckCampers and r/traveltrailers threads in the source pool, wireless solar/magnetic kits get praise for ease of install but recurring complaints about signal stutter and dropouts, especially on longer rigs. A car-and-driver test cited in the data also flagged wireless transmission as unreliable on at least one budget magnetic model. If you tow a 30+ ft trailer, a wired digital system or a brand-matched RV system (e.g. Furrion on pre-wired RVs) tends to be more dependable.