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Ford Explorer ST (2025-2026) Wheel Fitment Guide
The 2025-2026 Ford Explorer ST is a midcycle facelift of the U625 platform — same 3.0L EcoBoost twin-turbo V6, same suspension geometry, and the same bolt pattern, bore, and fastener hardware as the 2020-2024 ST. The most significant wheel-related change is that the 21x9 ET37.5 wheel moved from the optional ST Street Pack to standard equipment on every 2025+ ST, in a new 15-spoke Magnetite-painted finish. Because the underlying platform is unchanged, the aftermarket fitment knowledge built by the established Explorer ST owner community applies directly to the 2025-2026 car. This guide covers the factory configuration, the documented square aftermarket setups owners actually run, the front-liner clearance and offset behavior that defines fitment on this platform, and why the Explorer ST is run square rather than staggered.
About this guide: The fitment data below is compiled from owner-submitted builds and enthusiast forum research across ExplorerST.org and ExplorerForum.com. We summarize what Explorer ST owners have reported running successfully so you have a researched starting point for your build.
Every FMB build goes through a sanity check and an engineering verification before forging. We cross-reference the configuration you're ordering against your trim and brake package and what's commonly documented on similar builds — and our manufacturing partner verifies the wheel itself (backspace, brake caliper clearance, structural spec) before production begins.
Fitment decisions involving ride height, tire choice, and suspension setup are yours and your installer's call. Use this guide as research, not as a substitute for a real fitment conversation.
The 2025-2026 Explorer ST comes standard with a 21-inch 15-spoke wheel in Ford's Magnetite-painted finish — the most significant wheel change versus the 2020-2024 ST, where 21-inch wheels required the optional ST Street Pack. The OEM configuration is square: the same 21x9 ET37.5 wheel and 275/45R21 tire at all four corners, on a roughly 30.7-inch overall diameter. All base hardware — bolt pattern, center bore, thread pitch, torque, and seat type — is unchanged from the previous generation, so aftermarket sizing carries over directly.
21" 15-Spoke Magnetite
Standard — No Charge
Front Wheel21×9 ET37.5
Rear Wheel21×9 ET37.5
Front Tire275/45R21
Rear Tire275/45R21
OEM Tire BrandPirelli Scorpion Zero A/S
Center Bore70.5mm
Bolt Pattern5×114.3
Fastener TypeLug Nuts
Thread PitchM14×1.5
Torque Spec150 lb-ft (204 Nm)
Seat Type60° Conical
ConstructionCast Aluminum
OEM Part NumberRB5Z-1007-D
Brake PackagePerformance front and rear (red calipers)
Applies ToAll 2025-2026 Explorer ST (RWD and AWD), standard equipment
Square setup — identical size at all four corners, overall diameter approximately 30.7 inches. The 21-inch Magnetite is standard on every 2025+ ST; the 20-inch wheel that served as the base ST wheel on 2020-2024 cars is no longer part of the ST configuration. "Magnetite" is Ford's official color designation, though aftermarket OEM resellers commonly list this wheel as "Dark Grey" or "Magnetite Grey." The wheel is mechanically cross-compatible with 2021-2025 Explorer ST per OEM parts data, so replacement wheels can be sourced from any Explorer ST in that range. Buyers ordering a forged build should confirm the wheel stamp on their specific car before manufacturing.
Aftermarket Options
Aftermarket Wheel & Tire Configurations
The Explorer ST is run square by the aftermarket community — the same size at all four corners, matching the factory architecture. The two setups below are the documented square configurations owners actually run, both built around a 10.5-inch-wide wheel at an ET30 offset, the community's consistently cited flush target on this platform. The key decision is diameter and tire: a 20-inch wheel trades some visual diameter for more sidewall and a softer ride, while a 22-inch wheel delivers larger-diameter presence. Both keep overall diameter within a fraction of the OEM 30.7 inches, so no speedometer correction is needed. For 2025+ owners coming off the standard 21-inch Magnetite, moving to a 20-inch aftermarket setup is a deliberate diameter downsize in exchange for tire — a common and intentional choice on this platform, not a same-diameter swap.
⚠️Platform-specific fitment notes — Ford Explorer ST
Offset and front fender liner clearance.
On a 10.5-inch-wide wheel, ET30 (with some builds at +30 to +32) is the offset the Explorer ST community consistently cites for a clean flush stance. Tire choice at this offset compounds clearance: a 305/35 is commonly reported to clear all four corners, while a taller-sidewall 305/40 on the same wheel is documented as tight when turning and can contact the front fender liner at steering lock. Evaluate clearance through the full steering range, and pair any wide tire with careful sidewall selection.
Overall tire diameter on downsized wheels.
The OEM 21-inch setup sits at roughly 30.7 inches overall diameter. Community measurement work places the practical clearance ceiling around 32 inches — taller than that is documented as not clearing. The common 20-inch tire choice, 295/45R20, measures about 30.5 inches, staying within a fraction of OEM so no speedometer correction is required. When downsizing wheel diameter, match tire diameter back toward the OEM 30.7-inch figure.
AWD rolling diameter — why this platform runs square.
The Explorer ST is offered in RWD and AWD, and every documented aftermarket fitment on the platform is square. Staggered configurations introduce a front-to-rear rolling-diameter mismatch that can stress the AWD driveline over time, and owners have reported AWD-system faults from mismatched front and rear tire sizes. The math should be checked against your owner manual before committing — we document tire dimensions on every card; verifying compatibility is your responsibility.
Square Setup
Most Popular
Stanceflush → poke
OEM
Aggressive
RWD + AWDDaily
Wheels (All 4)
22×10.5 ET30 (Front and Rear)
Tires
305/35R22 (All 4)
Sources
Strongly documented
4 community
2 vendor
The most frequently documented aftermarket setup on the Explorer ST, and the platform's anchor flush spec. ET30 on a 10.5-inch-wide wheel is the offset the community consistently lands on for a clean flush stance; owners typically report the 305/35R22 clears all four corners, including the front fender liner at steering lock, with no spacers or fender work at stock height. Documented across multiple owner builds, including cars running H&R lowering springs (some paired with a Steeda rear sway bar), with owners reporting no rubbing even loaded for a road trip. Overall diameter lands near 30.4-30.7 inches, so no speedometer correction is needed. Tire variants on this same wheel: a taller-sidewall 305/40R22 is run by owners who want extra ride compliance, but it sits closer to the front fender liner at steering lock; a 315/35R22 is the documented outer limit for width on this wheel. Hub-centric rings are commonly required — OEM bore is 70.5mm and most aftermarket wheels use a larger 72.6mm or 76.1mm bore. Commonly paired tire options: Michelin Pilot Sport 4S, Continental ExtremeContact Sport 02, Pirelli Scorpion Zero All Season Plus.
Stanceflush → poke
OEM
Aggressive
RWD + AWDDaily
Wheels (All 4)
20×10.5 ET30 (Front and Rear)
Tires
295/45R20 (All 4)
Sources
Documented
1 community
1 vendor
The 20-inch take on the platform's ET30 flush spec — same 10.5-inch width and ET30 face position as the 22-inch setup above, stepped down a wheel diameter for more sidewall and a softer ride. The 295/45R20 measures about 30.5 inches overall, within a fraction of the OEM 30.7 inches, so no speedometer correction is needed while the 295mm width fills the arch flush. For a 2025+ owner coming off the standard 21-inch Magnetite, this is a deliberate diameter downsize in exchange for the wider tire and taller sidewall — a documented and common preference on the platform. Documented on a stock-suspension owner build and listed across community fitment references as the diameter-matched 20-inch option. Hub-centric rings are commonly required — OEM bore is 70.5mm and most aftermarket wheels use a larger 72.6mm or 76.1mm bore. Commonly paired tire options: Michelin Pilot Sport All Season 4, Continental CrossContact RX, Pirelli Scorpion Zero All Season Plus.
Our Process
What happens when you build with FMB
The configurations above are a starting point — not a final spec. When you start your Ford Explorer ST build, here's what actually happens before anything is forged:
FMB sanity check.
We cross-reference the configuration you're ordering against your trim and brake package, and compare it to what's commonly documented on similar builds. If the setup you want falls outside what we've seen work on this platform, we'll flag it before you commit.
Manufacturer engineering verification.
Our manufacturing partner verifies the wheel itself — backspace, brake caliper clearance for your brake package, and structural spec — before production begins.
Design render approval.
You see the final design and confirmed specs before any aluminum is touched.
Ride height, tire choice, alignment, and suspension setup are variables your installer handles on the car — not things we verify from our end. That's why we ask for the vehicle details we do on the build form: they're the inputs we can actually check against.
What wheels come stock on the 2025-2026 Ford Explorer ST?
The 2025-2026 Explorer ST comes standard with 21×9 ET37.5 15-spoke Magnetite-painted aluminum wheels (Ford part number RB5Z-1007-D) wrapped in 275/45R21 Pirelli Scorpion Zero A/S tires, in a square setup at all four corners. Unlike the 2020-2024 model, where 21-inch wheels required the optional ST Street Pack, the 21-inch wheel is now standard on every ST.
What are the bolt pattern, center bore, and torque specs for the Explorer ST?
Bolt pattern is 5×114.3 (also expressed as 5×4.5-inch). Center bore is 70.5mm. The Explorer ST uses lug nuts with M14×1.5 thread pitch and a 60-degree conical seat. Torque specification is 150 lb-ft (204 Nm). These specs are unchanged from the 2020-2024 generation.
What aftermarket wheel sizes are commonly documented on the Explorer ST at stock ride height?
The platform is run square, and two setups dominate the documented builds, both on a 10.5-inch-wide wheel at ET30. The most frequently documented is 22×10.5 ET30 with 305/35R22, reported across multiple owner builds as a clean flush fitment with no spacers or fender work at stock height. The 20-inch equivalent, 20×10.5 ET30 with 295/45R20, keeps overall diameter near OEM (about 30.5 inches versus the factory 30.7) and is the diameter-matched choice for owners who want more sidewall. Both fit without fender work at stock ride height; verifying clearance through the full steering range is commonly cited as best practice.
What is the critical offset for the 2025-2026 Explorer ST?
On a 10.5-inch-wide wheel, the Explorer ST community consistently cites ET30 — with some builds at +30 to +32 — as the flush target. Tire choice at this offset matters as much as the offset itself: a 305/35 is commonly reported to clear all four corners, while a taller-sidewall 305/40 on the same wheel is documented as tight when turning and can contact the front fender liner at steering lock. A 315/35 is the documented outer limit for width on a 10.5-inch wheel. Evaluate clearance through the full steering range, and pair any wide tire with careful sidewall selection.
What's the difference between flush and aggressive fitment on the Explorer ST?
Flush fitment means the tire sits level with or just inside the fender edge at stock ride height — on the Explorer ST that is the 10.5-inch-wide, ET30 territory the documented setups occupy. More aggressive stance on this platform comes mainly from tire choice (a taller or wider tire like 305/40 or 315/35 on the same wheel) and from lowering, rather than from dropping offset further, because lower offsets push a wide tire toward the front suspension and liner. The stance dots on each card map this spectrum — 1 dot is the most conservative documented setup, 5 dots the most aggressive.
Should I run a square or staggered setup on my Explorer ST?
Run square. The OEM configuration is square, and every documented aftermarket fitment on the Explorer ST is square — the same size at all four corners. The platform is offered in RWD and AWD, and a staggered setup introduces a front-to-rear rolling-diameter mismatch that can stress the AWD driveline; owners have reported AWD-system faults from mismatched front and rear tire sizes. Square setups also allow tire rotation across all four corners and are simpler to source. If you are set on any front-to-rear size difference, verify it against your owner manual first.
How do RWD and AWD fitments compare on the Explorer ST?
Wheel hardware is identical on both drivetrains — 5×114.3 bolt pattern, 70.5mm center bore, M14×1.5 lug nuts, 60-degree conical seat. The documented square setups apply to both RWD and AWD cars. The AWD-specific consideration is rolling diameter: because the platform is run square, front and rear diameters stay matched, which keeps AWD owners within tolerance. Any move to mismatched front/rear sizes is where AWD owners need to verify against the owner manual; that is the buyer's responsibility.
What lug nuts do I need for aftermarket wheels on the Explorer ST?
The Explorer ST uses M14×1.5 thread-pitch lug nuts with a 60-degree conical seat. Many aftermarket wheels use a ball-seat or flat-seat design, which requires matching aftermarket lug nuts — the OEM conical nuts will not seat correctly in a ball-seat wheel. Always verify the seat type your aftermarket wheel requires before buying lug hardware.
Do aftermarket fitments from the 2020-2024 Explorer ST apply to the 2025-2026?
Yes. The 2025-2026 ST shares the same U625 platform, suspension geometry, and clearance envelope as the 2020-2024 model. The bolt pattern, center bore, thread pitch, and torque spec are all unchanged. The offset limits, tire-size guidance, and documented square setups carry over directly — the main difference is that the standard wheel is now the 21-inch Magnetite rather than the earlier 20-inch base wheel.
What about spacers on the Explorer ST?
Spacers are sometimes used to fine-tune stance with off-the-shelf wheels, and extended lug hardware sized to the spacer thickness is required for safe thread engagement. For custom forged aftermarket wheels, FMB delivers at the effective offset directly — the cards above show as-forged offsets, so you get the intended face position without stacking a spacer behind a higher-offset wheel. That is a cleaner installation than running a spacer to reach the same stance.
What are the best winter wheel options for the Explorer ST?
The OEM 21×9 ET37.5 wheels pair with winter-specific 275/45R21 tires — Nokian Hakkapeliitta R5 SUV and Michelin X-Ice Snow have been used successfully by ST owners on this rim size. A dedicated 18-inch or 19-inch winter wheel with a 255/65 or 265/60 winter tire gives a taller sidewall and better snow traction at lower cost per season. Narrower tires typically outperform wide low-profile setups in snow, so a step down in width for winter is worth considering in serious snow climates.
What load rating do I need for aftermarket wheels and tires on the Explorer ST?
The Explorer ST is a roughly 4,800 lb SUV, and OEM tires use extra-load (XL) construction. Aftermarket wheels should be load-rated with a safety margin for a fully loaded ST, and aftermarket tires should maintain XL or equivalent reinforced construction — standard-load tires at the same nominal size are not a like-for-like replacement. Both matter more if you tow, since the ST's towing capacity assumes OEM-spec load ratings are preserved. Always verify the wheel manufacturer's published load rating and match or exceed the OEM tire load index before purchasing.
How does FMB verify fitment before forging my wheels?
Every FMB order goes through a sanity check and an engineering verification before any aluminum is forged. First, our team cross-references the configuration you're ordering against your trim and brake package and flags anything that falls outside what's commonly documented on similar Explorer ST builds. Second, our manufacturing partner verifies the wheel itself — backspace, brake caliper clearance, and structural spec — before production begins. You then approve the final design render and confirmed specs before any work starts. Ride height, tire choice, and alignment are things your installer handles on the car; the fitment guides on this site are researched starting points for making those decisions with your installer.
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