The GPS models shown here were designed specifically for RV use and have displays of at least 4.3 inches.
The Garmin RV 770 LMT-S is a mutation of the 760 LMT model that maintains its sibling's sizable form factor by touting a 6.95-inch display -- 7-inch RV GPS interfaces were considered big, but not colossal, as we were writing this.
Some also found its connectivity rather sluggish, saying that they ended up relying on mobile apps and Google Maps to navigate, but that's in the context of so many other reviewers being fully satisfied.
Another reviewer complained about its tendencies to freeze when driving into metropolitan areas, although he also states that a software update, which you should definitely take note of, while you're here, did the trick.
Some of the criticisms made on this 3.5-star backup-camera-supporting RV GPS were more incidental than technical, with one buyer saying that it directed them away from a traffic incident up ahead, but led them into the center of a large city, which, as you know, is not the most convenient position for an RV or towable trailer to be in.This feature provides users with ratings and descriptions of various AAA-certified RV grounds or diners.This (rating temporarily unavailable)-star unit also comes with a backup camera input, obviously with the backup camera being sold separately.Having said that, the same buyer mentioned that this particular model takes some getting used to, commending its snappy response to voice commands.Other buyers also praised this backup-camera RV GPS's elevation and grade features, which come particularly handy when driving over mountains.