The tech removed the tire, and determined that the brake caliper had seized up and couldn’t be released. (And the disc is rather scuffed; see pic.) So we’ll need a tow to somewhere that can fix that. It’s Sunday, so we’ll be here at least till tomorrow. At least we’re safe at a rest stop.

Brake drum etc with tire removed

We initially thought it was a tire issue, but it turned out to be a brake issue. Our roadside assistance company, CoachNet, sent a mobile tech, who arrived promptly (we were pleased that they were able to find someone to come on Saturday evening).

Mobile tech with our motorhome