Make Pebble Flow spare wheels available to owners

I want a spare wheel and tire. Yes, I know that most EVs omit such, but I added one to my R1T and this Pebble will be towed behind it to some very remote locations where an unrepairable cut in the tire would be extremely inconvenient. Pebble Mobility has not been cooperative as far as my procuring a spare. The tire is easy, but the wheel is apparently a custom design which is unavailable from any source that I have explored, including the experts at Discount Tire. I’d be grateful for any leads.

Rim N22 18X8.0J ET65 6X130 84.1 SAE-J2530 6061-T6
Tire Goodyear Wrangler Workhorse HT LT275 70R18

Here is a breakdown of the specifications:

• 18X8.0J: 18-inch diameter and 8.0 inches wide.
• ET65: +65 mm offset.
• 6X130: 6-lug bolt pattern with a 130 mm pitch circle diameter.
• 84.1: 84.1 mm center bore diameter.
• SAE-J2530: Certified under the SAE J2530 standard.
• 6061-T6: Constructed from 6061-T6 aluminum alloy.