Sooo I saw this earlier and wanted to jump in because I've dealt with the Navigator's size for years. Ngl, it’s a total beast to park and keep clean! While PPF is definitely king for rock chips, it won't really stop a heavy door ding from a rogue shopping cart, you know? For your situation, I honestly recommend looking into AMP Research PowerStep XL running boards. They sit a bit lower and act as a literal shield against other car doors. Also, since you're worried about the paint, I've been super satisfied with Gtechniq Crystal Serum Ultra. Ceramic won't stop a rock, but it makes washing that massive surface area WAY easier cuz the grime just slides off. I know someone mentioned the Lincoln guards, but I'd look at WeatherTech No-Drill Mud Flaps for slightly better coverage on those wide tires. It's a lot of surface to cover but totally worth the peace of mind... gl!

oh man, congrats on the new beast! when i first got my Navigator L, i was literally terrified of that massive hood getting sandblasted on the highway... i mean, it's basically a moving wall, right? honestly, you highkey need to get a full front wrap with XPEL ULTIMATE PLUS Paint Protection Film. ceramic coating is cool for the shine, but it wont stop actual rocks from chipping the paint. i also added the Lincoln Navigator Genuine Splash Guards and they're a total lifesaver for keeping the running boards clean. they look super factory and discreet too. basically, the PPF is for the chips and the guards handle the slush and tar. it's 100% worth the investment bc you'll actually enjoy driving it instead of worrying about every little sound you hear off the road. gl with the new ride! 👍

Curious about one thing: are you gonna be doing the installs yourself or taking it to a detailer?? Tbh, the price difference is massive between DIY and pro shops. I’m a total beginner with this stuff but I’ve been really happy with some budget-friendly fixes on my own car. I basically looked at these two routes for value:
* Professional Ceramic vs. Turtle Wax Hybrid Solutions Ceramic Spray Coating: A pro job costs $1k+, but the Turtle Wax spray is like $15. It's super DIY-friendly and the water beads right off, though you gotta re-apply it every few months. No complaints so far!
* Full PPF vs. 3M Clear Paint Protection Vinyl Film (DIY strips): Instead of a $5k wrap, I bought small strips of this 3M film for the door edges and the trunk sill. It's way cheaper for ur wallet, but kinda tricky to get the bubbles out if you’re rushing. I'm satisfied I went the budget route cuz this massive truck is already expensive enough to maintain. Honestly, it still looks pristine... lowkey best decision I made. gl!!

Like someone mentioned, the sheer size of the Navigator L makes it a huge target in any parking lot. I have to agree that physical barriers are way more reliable than just sprays or waxes. Honestly, I was pretty disappointed when I realized my expensive ceramic coating did absolutely zero to stop a door ding from a rogue grocery cart... it just made the scratch look shinier, which sucked. Since you're worried about the length, you definitely need more than just front-end help. Here is what I use to keep mine from getting thrashed:

• Dawn Enterprises Painted Body Side Moldings for Lincoln Navigator L — These are a lifesaver because they actually stick out far enough to catch doors before they hit your metal. I tried the generic ones and they looked terrible, but these match the factory paint perfectly.
• 3M Door Edge Protection Film 0.5 inch x 36 foot — Dont bother with the plastic clip-on guards. I had issues with those trapping grit and actually ruining the paint underneath. This film is basically invisible and stops those chips when you're forced to park in tight spots. Its really frustrating how easily these big trucks get beat up, but these two additions made a huge difference for my sanity.