Hey everyone. So, I took the advice given here and did some checking. Good thing!
I found major cracking in between the treads of all four tires
Looks like I'll be replacing them all and will likely do the brakes while I'm at it.
Was hoping this wouldn't be a can of worms but it's a camper....expect anything. Yeeesh!
Anyhow, thanks so much again for all of your help. Happy camping!