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Forget The Bronco — Hyundai’s New Body-On-Frame Rides On 37-Inch Tires

Forget The Bronco — Hyundai's New Body-On-Frame Rides On 37-Inch Tires

Hyundai crouched down at the 2026 New York Auto Show and let the world peek under its Boulder concept — and what’s under there is more revealing than anything the company said on stage. This isn’t a styling exercise dressed up with placeholder hardware. It’s a calculated signal to every off-road buyer who thought Hyundai couldn’t play in this space.

I’ve seen plenty of auto show concepts with hollow underbodies and generic suspension mockups just to fill the wheel arches. The Boulder is different. The specific choices Hyundai made — a solid rear axle, remote reservoir shocks, and 37-inch Nitto Trail Grapplers — are too deliberate to be coincidental. Someone in that engineering department wanted enthusiasts to notice.

What Hyundai actually put under the Boulder

Up front, the Boulder runs independent suspension with lower control arms and what appears to be a separate knuckle arrangement. The exact setup is hard to confirm at a show floor level — it could be MacPherson struts, or there could be an upper control arm tucked into the wheel arch. My money is on double-wishbone, which is the standard in the midsize truck and SUV segment and the smarter choice for off-road articulation.

The rear is where the story gets interesting. Hyundai fitted the Boulder with a solid rear axle — the same layout that makes the Jeep Wrangler and Ford Bronco so effective on trail. When one wheel climbs over a rock, the opposite wheel is pushed back toward the ground, maintaining traction without the complexity of independent geometry. Pair that with coilover shocks and trailing arms for axle location, and you have a genuinely capable rear suspension architecture, not a show prop.

Remote reservoir shocks tell you exactly who Hyundai is targeting

Here’s the catch most coverage glossed over: Hyundai mocked up remote reservoir shocks at all 4 corners of the Boulder. Remote reservoirs increase fluid and gas capacity inside the damper, which delays heat fade during sustained off-road use. You find them on the Ford Bronco Raptor, the Ram 1500 TRX, and purpose-built racing trucks. You don’t bolt them onto a concept just to fill space.

The real story is that Hyundai is benchmarking at the performance tier of the segment, not the entry level. Adding remote reservoirs to a concept is a message — it says the production truck will be positioned above base-spec off-roaders in terms of capability ambition. Whether that translates directly to production hardware is another question, but the intent is clear and it should concern Ford and Jeep more than any press release could.

37-inch tires are now the benchmark, and Hyundai knows it

The Boulder rolls on 37-inch Nitto Trail Grappler mud terrain tires — the exact same size that Ford made standard on the Bronco Raptor. That’s not a coincidence. In the off-road world, tire size is a shorthand for capability credibility, and 37s have become the new threshold that separates serious rigs from weekend warriors. Hyundai showing up to New York on that exact spec sends a pointed message to every Ford and Jeep loyalist in the room.

It’s worth separating concept hardware from production reality here. The shocks on the Boulder don’t appear fully functional, and there are no rear brakes visible — so this isn’t a rolling prototype. What Hyundai is doing is communicating a capability target to the market, to suppliers, and to its own engineers. The tire choice, the axle choice, the shock choice — these are a brief, not a build sheet.

The pickup truck is the real priority — the Boulder may come later

Hyundai executives spent considerably more time at the show confirming that a midsize pickup is in active development than they did talking about a production version of the Boulder SUV concept. Reports from earlier in 2026 suggest the truck is still roughly 2 years from production, with the Boulder-style SUV likely following after the truck launches. Both models are confirmed for US design and manufacturing, which adds a layer of domestic production strategy to what looks like a pure product story.

What Hyundai isn’t saying out loud is how it plans to price this truck relative to the Tacoma, Ranger, and Bronco. That’s the variable that will determine whether the suspension architecture matters to mainstream buyers or only to the enthusiast segment. A Bronco Raptor starts above $60,000. If Hyundai can deliver comparable hardware at a lower entry point, the suspension details we saw under the Boulder stop being interesting and start being a serious commercial threat.

Model Rear Suspension Tire Size (Top Spec) Remote Reservoir Shocks Starting Price
Hyundai Boulder / Truck (concept) Solid axle + coilovers 37-inch Nitto Trail Grappler Yes (mocked up) TBD
Ford Bronco Raptor Solid axle + Bilstein 37-inch BFG KO2 Yes ~$66,000
Jeep Wrangler Rubicon 392 Solid axle + Fox 35-inch BFG KO2 No ~$80,000
Toyota Tacoma TRD Pro Independent + Fox 33-inch Falken Yes ~$58,000

If you’re shopping a capable midsize truck or serious off-road SUV in the next 2 years, Hyundai just earned a spot on your consideration list — whether you expected it there or not. Keep the Boulder concept on your radar, follow the production truck’s development closely, and don’t let the “it’s just a concept” framing stop you from taking the suspension details seriously. Hyundai made deliberate choices under that sheet metal, and those choices were made for an audience exactly like you.

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