Best Tire Inflator for a Rivian R1T (Adventure / Quad-Motor)

The Rivian R1T is the adventure-truck EV that Tesla doesn't make, and the tire-pressure conversation reflects it. Rivian ships the R1T on factory Pirelli Scorpion All-Terrain Plus tires (or upgraded BFGoodrich All-Terrain T/A KO2 on Adventure trims), with explicit support for off-road tire-pressure adjustment via the truck's Drive Modes. Owners actually use this — Rivian's user base air-downs more frequently than any other production EV's.

The Quick Answer

The Fanttik X9 Pro is the right tire inflator for daily Rivian R1T use, and the X9 Ultra is the upgrade for owners running aggressive off-road. The R1T's 22" wheels with 275/55 tires demand serious volume; the X9 Pro handles the on-road 42 PSI target comfortably. Air-down/air-up workflows on the R1T match the X9 Pro's preset-mode design exactly.

Why the R1T Tire-Pressure Profile Is Different

Rivian publishes explicit off-road PSI guidance — 38 PSI for All-Purpose mode, dropping to 22-26 PSI for Soft Sand and Rally modes, and as low as 18-22 PSI for Rock Crawl. Tesla doesn't publish equivalent off-road numbers because the Cybertruck shipped after the R1T. The R1T's 5 model-specific drive modes each suggest different tire PSI, which is a workflow the X9 Pro's preset memory matches.

The Specs You Need to Know

Why the R1T's Drive Modes Make Preset Memory Critical

A typical Rivian adventure trip might cycle through three drive modes in a day: All-Purpose to the trail head, Soft Sand for a beach section, then back to All-Purpose for the return highway. Without preset memory, every transition means redialing the pump twice. The X9 Pro saves three or four targets — All-Purpose, Soft Sand, Rock Crawl, and Towing — and switches between them with one tap.

How to Air-Up an R1T After Sand Driving

1. Pull off the sand onto firm ground. Switch the truck to All-Purpose mode.
2. Tap the X9 Pro's All-Purpose preset.
3. Connect to one tire at a time. The R1T's 22" wheels expose the valve stems cleanly — no cover removal needed.
4. Drive 5 km for TPMS recalibration. Rivian's TPMS settles faster than Tesla's, usually within 1 km.

What to Watch Out For

• The R1T has both a 12V outlet in the bed and a 120V outlet up to 1500W. Both can charge the X9 Pro. The 120V outlet is faster.
• Rivian's air suspension changes ride height but not tire pressure. The off-road PSI recommendation still requires manual air-down at the trail head.
• Adventure trim BFGoodrich KO2 tires need higher cold PSI than the Pirelli Scorpions for the same drive mode. Refer to the tire manufacturer's spec, not just Rivian's drive-mode card.

FAQ

Q: What's the right PSI for an R1T in Rock Crawl mode?
A: 18-20 PSI per Rivian's spec. Below this, you risk bead unseating on a hard turn. Above this, you lose traction over rock.

Q: Will the X8 APEX work on an R1T?
A: Yes for daily use. It runs slower per tire than the X9 Pro and lacks preset memory, which matters more for the R1T's drive-mode workflow than for most Teslas.

Q: Does the R1S (SUV) have the same PSI as the R1T?
A: Similar. The R1S Conserve mode runs 42 PSI; off-road modes drop similar amounts. Refer to the R1S door-jamb placard for trim-specific values.

Verdict

The Fanttik X9 Pro is the right inflator for a Rivian R1T used as Rivian designed it. The Fanttik X9 Ultra is the upgrade for R1T owners running serious off-road events on a regular basis.

Related reading: Best tire inflator for a Tesla Cybertruck · Best tire inflator for a Ford F-150 Lightning · Best tire inflator for a Hummer EV