Toyota 4Runner 6th Gen Wheel Fitment Guide — Sizes, Offsets, and What Actually Fits

The 6th generation 4Runner (2025+) moves to Toyota's TNGA-F platform — and with it come three critical hub changes that mean wheels from every previous 4Runner generation don't bolt on without modification. This guide covers the new specs, the significant differences between trim levels, and exactly what fits at each tyre size with and without a lift.

Toyota 4Runner 6th Gen — Key Hub Specs

• Bolt pattern: 6×139.7
• Centre bore: 95.1mm (reduced from 106.1mm on previous generations)
• Wheel nut thread: M14×1.5 (upgraded from M12)
• Torque spec: 96 ft-lb (~130 Nm) for alloy wheels

Why Previous Generation Wheels Don't Fit

Three things changed simultaneously on the 6th gen:

1. Larger wheel studs (M14 vs M12): The lug holes on 5th gen and older wheels are sized for M12 hardware. The larger M14 studs on the 6th gen will not pass through — the wheels would need to be drilled out to fit.
2. Smaller centre bore (95.1mm vs 106.1mm): Older Toyota truck wheels have a larger centre bore. A wheel with a larger bore can be fitted with hub-centric rings to compensate — but you cannot fit a wheel with a smaller bore onto a larger hub. Old 4Runner wheels simply won't seat on the 6th gen hub.
3. Different offset targets by trim: More on this below.

The 6th gen 4Runner does share its hub spec with several other current Toyota truck platforms: 2025+ Tacoma, 2022+ Tundra, 2022+ Sequoia, and 2024+ Land Cruiser 250. If you're running one of those platforms, wheels are cross-compatible.

Factory Wheel Specs by Trim

This is one of the most important things to know before buying aftermarket wheels — the 6th gen is split into two completely different offset philosophies depending on trim.

Trim	Wheel	Offset	Tyre	Fenders
SR5	17×7	ET55	245/70R17	Standard
TRD Off-Road	18×7.5	ET55	265/70R18	Standard
TRD Sport / Limited / Platinum	20×8	ET55	265/55R20	Standard
TRD Pro / Trailhunter	18×8.5	ET20	265/70R18	Wider factory flares

The ET55 offset on standard trims tucks the wheel deep inside the arch — visually conservative and under-wheeled by most standards. The TRD Pro and Trailhunter solve this from the factory with wider fender flares and ET20 wheels that sit significantly more outward. If you own a standard-trim 6th gen, correcting the stance is a primary reason to go aftermarket.

Offset Guide — What Each Range Does

ET28–42 — Conservative Street Fitment

On standard-fender trims, this offset range fills the arch noticeably better than factory ET55 while staying cleanly inside the guard. Allows running larger tyres (up to 33") on stock suspension without rubbing. Maintains stock-like handling geometry. Best choice for owners who want a cleaner look without commitment to a full build.

ET20–25 — Balanced Fitment

Wheels sit close to flush with the fender edge on standard trims, or slightly inside with factory-width flares. This is the TRD Pro's factory target and the sweet spot for most aftermarket builds — aggressive enough to look intentional, within the guard line without flares. On TRD Pro/Trailhunter with factory flares, ET20 sits perfectly.

ET0 to -12 — Aggressive/Lifted Only

Significant poke — 40–70mm outward from stock position. At this offset, the wheel sticks well outside standard fender guards and changes the steering scrub radius noticeably. Requires a lift, fender trimming, and usually aftermarket flares. Not suitable for stock suspension — the wheel will contact the inner arch at full compression and lock.

Tyre Size Guide — What Fits and What It Takes

Up to 33" (285/70R17, 275/70R18) — Minor Reversible Mods

Fits on stock suspension with the following modifications — all reversible, no cutting:

• Remove front mud flaps
• Remove front bumper air dam (lower plastic valance)
• Remove crash bracket plates inside the front arch (17mm bolts)
• Repin the felt fender liner forward — moves it 20mm without trimming, gives clearance at full lock

Recommended offset for this size on standard trims: ET25–30. On TRD Pro/Trailhunter: ET20.

34" (285/75R17, 285/70R18) — Light Lift Required

2–2.5 inch lift is the standard approach for 34" tyres. Popular choice at this size: spring preload collars (Westcott Designs style) that add lift without replacing the suspension. Same minor reversible mods as 33" required. No metal cutting needed at this size on a properly lifted truck.

Recommended offset: ET20–25.

35" (35×12.50R17) — Committed Build

35" on the 6th gen requires more than a lift. On smooth tarmac with 2.5–3" lift they may appear fine — but the moment the truck hits off-road and reaches full suspension droop, the tyre contacts and destroys the plastic arch components. A proper 35" build requires:

• Lift of 3" minimum
• Cutting and trimming the plastic bumper corners
• Trimming rocker panel extensions
• Rolling/trimming inner arch metal
• Extended bump stops to limit suspension travel

35" is a legitimate build target for the 6th gen, but it's a build — not a bolt-on.

Wheel Width — The Optimal Range

For off-road focused builds: 8.5 or 9 inch width on 17" or 18" diameter is the proven sweet spot. Wide enough to run 285+ tyres without sidewall bulge, narrow enough that inner arch clearance is manageable.

20" wheels (factory on Limited/Platinum) leave very little tyre sidewall for off-road use — the low-profile rubber is optimal for road refinement but poorly suited to trail use where sidewall flex and impact absorption matter. If the truck goes off-road, 17" or 18" is the correct diameter.

Load Rating — The Mistake That Kills Ride Quality

The 6th gen 4Runner's TNGA-F platform is stiffer than previous generations. This amplifies the effect of tyre load range choice.

Avoid Load Range E (10-ply): These are engineered for heavy diesel pickup trucks carrying significant payload. On a 4Runner, they're overbuilt — the high inflation pressure and stiff sidewall construction results in a harsh, truck-like ride that eliminates the platform's refinement entirely.

Recommended: Load Range B (4-ply) or Load Range C (6-ply): These tyres deform properly on trail obstacles, maintain traction at lower pressures when airing down, and preserve the 4Runner's ride comfort on the road. The difference is immediately noticeable.

Tyre Recommendations by Use Case

All-Terrain / Daily Driver

• BFGoodrich All-Terrain T/A KO3 — updated successor to the KO2, currently the most discussed AT tyre for the 6th gen platform
• Nitto Ridge Grappler — hybrid rugged-terrain pattern, bestseller for builds that need to look aggressive without highway noise
• Toyo Open Country A/T III — popular for expedition builds, balanced on-road comfort with genuine off-road capability

Mud / Off-Road Focused

• Mickey Thompson Baja Boss A/T — aggressive all-terrain with strong sidewall construction, note the large sidewall lugs add physical width beyond nominal tyre size
• Yokohama Geolandar M/T — proven mud-terrain for dedicated off-road builds

Note on sidewall lugs: Aggressive mud-terrain tyres with large protruding sidewall knobs can sit physically wider than their nominal measurement. A 285mm tyre with large sidewall lugs may fill the arch like a 295–300mm tyre. Account for this when speccing offset — go slightly more conservative (higher ET number) if running aggressive sidewall tyre models.

Frequently Asked Questions

What bolt pattern is the Toyota 4Runner 6th gen?

The 6th gen 4Runner uses a 6×139.7 bolt pattern with a 95.1mm centre bore and M14×1.5 thread. This is the same spec as the 2025+ Tacoma, 2022+ Tundra, 2022+ Sequoia, and 2024+ Land Cruiser 250.

Will 5th gen 4Runner wheels fit the 6th gen?

No — not without modification. The 6th gen uses M14 wheel studs (vs M12 on 5th gen), so the lug holes on older wheels are too narrow. The centre bore also changed from 106.1mm to 95.1mm, which means older larger-bore wheels would need hub-centric rings. In practice, drilling the lug holes and fitting rings is not recommended — purpose-built 6th gen fitment is the correct approach.

What offset should I run on a standard-trim 6th gen 4Runner?

ET25–30 for a conservative fill that stays inside the factory guards. ET20–25 for a flush/slight-poke stance. Both work on stock suspension with standard-width fenders. Below ET20 requires fender flares or trimming on standard trims.

What is the largest tyre that fits the 6th gen 4Runner without cutting?

34" (285/75R17 or 285/70R18) with a 2–2.5" lift and minor reversible mods — removing mud flaps, air dam, crash brackets, and repinning the fender liner. 35" requires cutting plastic trim and rolling inner metal — no clean way around it.

Why does TRD Pro use ET20 while other trims use ET55?

The TRD Pro and Trailhunter come with wider factory fender flares that provide additional arch clearance. This allows the lower ET20 offset without the wheel poking outside the guard line. Standard trims have narrower fenders and require higher offset to stay legal — or aftermarket flares to run lower offsets.