Off-Road Tire & Wheel Spec

I’m finishing up a build that will live almost exclusively off-road, clawing through deep mud and loose sand. The suspension is dialed in; now I need a specialist to zero-in on the tire and wheel package so the truck can float, grip, and clean out without shaking itself apart on the way to the trailhead.

Please give me a complete specification that covers:

• Optimal tire size, tread pattern, and ply rating for mud-and-sand duty on a dedicated off-road rig
• Recommended wheel width, diameter, offset/backspacing, and whether beadlocks (or simulated beadlocks) are justified for my use case
• Air-down guidelines and ideal PSI range to maximize footprint without risking debeading
• Brand/model short-list with pros, cons, and current availability in my market
• Any supporting calculations or references—load index, speed rating, scrub radius—so I can hand the sheet straight to my installer

The deliverable should be a concise PDF or spreadsheet that lets me order parts with confidence and bolt them on knowing they’ll work together under real-world abuse.