WedsSport TC105X: The Ultimate Lightweight Performance Wheel for Your Subaru

What Makes the WedsSport TC105X Special

WedsSport is not just another wheel brand—it is a motorsport institution. As the competition division of Weds Co., Ltd., a Japanese manufacturer with roots stretching back decades, WedsSport has earned its reputation on the starting grid. Their wheels have seen duty in Super GT, time attack, rally, and grassroots racing series across Japan and beyond. That racing DNA is baked into every product they release, and the TC105X is the crown jewel of their lightweight performance lineup.

A Legacy Built on the Track

The TC105X evolved from WedsSport's ongoing mission to reduce unsprung weight without sacrificing structural integrity. Unsprung weight—the mass of components not supported by your suspension, including wheels, tires, and brakes—has a direct and measurable impact on how your car accelerates, brakes, and changes direction. Lighter wheels mean your suspension can react faster to surface changes, your brakes work more efficiently, and your drivetrain wastes less energy spinning rotational mass.

For Subaru owners specifically, this matters even more. The symmetrical AWD system is already sending power to all four corners, so reducing the rotational weight at each wheel compounds the benefit across the entire drivetrain. Whether you're launching out of a corner at a track day or navigating a gravel stage, the TC105X was designed to give you an edge.

More Than Just Light

Plenty of wheels claim to be lightweight, but the TC105X backs it up with engineering that prioritizes real-world durability. This is not a fragile show wheel—it's built to absorb the punishment of competition use while maintaining its structural integrity over thousands of hard miles. The five-spoke design is clean, aggressive, and purposeful, with every contour shaped by aerodynamic and strength considerations rather than aesthetics alone.

Why Subaru Enthusiasts Choose TC105X

The Subaru community has long gravitated toward the TC105X for a few key reasons:

• Proven weight savings — Noticeably lighter than most OEM Subaru wheels, translating to sharper turn-in and improved braking
• Motorsport credibility — These wheels aren't styled to look fast; they're engineered by a company that races
• Multiple variants — Street, forged, and gravel options mean there's a TC105X for every type of Subaru build
• Availability in Subaru bolt patterns — Offered in both 5x100 and 5x114.3 to cover nearly every WRX, STI, BRZ, and more

In the next section, we'll pull back the curtain on the specific technologies WedsSport packs into the TC105X that make these weight and strength numbers possible.

Engineering & Technology Breakdown

What separates the TC105X from a generic lightweight wheel is the stack of proprietary technologies WedsSport has developed through years of motorsport R&D. Each innovation targets a specific goal—shave grams, add strength, or improve reliability under extreme conditions. Here's what's happening beneath the surface.

AMF – Advanced Metal Forming

AMF (Advanced Metal Forming) is WedsSport's proprietary flow-forming process applied to the barrel and lip of the wheel. Rather than casting the entire wheel in a single pour and calling it done, AMF uses high-pressure rollers to stretch and compress the barrel section while the metal is still hot. This process aligns the aluminum's grain structure, increasing tensile strength and allowing WedsSport to use thinner material without losing rigidity.

The result is a wheel that approaches forged-level strength in the barrel area at a fraction of the cost. For the TC105X, this means significant weight reduction in the outer portion of the wheel—exactly where rotational mass hurts performance the most.

N-FRAME Spoke Reinforcement

Look at the back side of a TC105X spoke and you'll notice it isn't flat—it features a reinforced rib structure WedsSport calls N-FRAME. This design adds a raised spine along each spoke that dramatically increases bending resistance without adding material to the face. Think of it like the I-beam concept used in structural steel: the shape itself provides strength, not extra bulk.

N-FRAME reinforcement is especially critical for Subaru applications. AWD vehicles place unique torsional loads on wheels during hard launches and cornering, and the N-FRAME design ensures the TC105X can handle those forces lap after lap.

Machined Side Cuts

WedsSport machines material away from the sides of each spoke in areas that contribute the least to structural integrity. These machined side cuts are not cosmetic grooves—they're calculated weight reductions based on finite element analysis (FEA) stress mapping. Every gram removed from these low-stress zones is a gram that doesn't need to spin, accelerate, or stop.

Anti-Slip Knurling & Upsized Back-Pad

Under hard braking and aggressive cornering, the forces between tire bead and wheel can cause micro-slippage—a subtle but real issue in competition settings. The TC105X addresses this with anti-slip knurling on the bead seat, a textured surface that grips the tire bead more securely. Combined with an upsized back-pad that provides a broader, more stable mounting surface against the hub, the wheel maintains precise positioning even under extreme loads.

VDC – Variable Durability Coating

The finish on a TC105X isn't just about looks. WedsSport applies their VDC (Variable Durability Coating) process, which layers a highly durable clear coat over the wheel surface. This coating is engineered to resist chips, scratches, and chemical exposure from brake dust and road debris—critical for wheels that spend time on track or in harsh driving environments.

AIR+ & AIR+α Technology

Available on select TC105X variants, WedsSport's AIR+ technology optimizes the internal barrel profile to increase air volume inside the tire. More air volume means more stable tire pressures during extended high-speed driving sessions when heat builds and pressures climb. The advanced AIR+α version, found on the forged TC105X, takes this further with refined internal geometry for even greater pressure stability.

The Sum of the Parts

No single technology makes the TC105X what it is. It's the combination—AMF barrel construction, N-FRAME spokes, machined side cuts, anti-slip knurling, upsized back-pad, VDC coating, and AIR+ air volume optimization—that creates a wheel purpose-built for performance. Every feature exists to solve a real problem that WedsSport encountered in competition, and that's what separates serious engineering from marketing buzzwords.

TC105X Variants: Standard, Forged & Gravel

One of the TC105X's greatest strengths is that WedsSport doesn't force you into a one-size-fits-all solution. The lineup includes three distinct variants, each engineered for a different type of driving. Understanding the differences will help you pick the right wheel for your build goals.

TC105X (AMF Flow-Formed)

The standard TC105X is the most versatile option in the lineup and the one most Subaru enthusiasts gravitate toward first. Built using WedsSport's AMF flow-forming process, it delivers an outstanding strength-to-weight ratio at a price point that makes sense for daily-driven cars that see occasional track duty.

• Available diameters: 15, 16, 17, and 18 inch
• Construction: Cast disc with AMF flow-formed barrel
• Best for: Street driving, weekend track days, time attack, autocross
• Key features: N-FRAME spokes, machined side cuts, anti-slip knurling, VDC coating, AIR+ technology

The wide range of available sizes means you can run TC105X wheels on everything from a GD-chassis Impreza to a VA STI, in both 5x100 and 5x114.3 bolt patterns depending on size.

TC105X Forged

For builders who want the absolute lightest and strongest option, the TC105X Forged is the pinnacle of the lineup. Rather than casting the disc and flow-forming the barrel, this variant is fully forged in Japan from a single billet of aluminum. The forging process compresses the metal under extreme pressure, creating a denser, tighter grain structure that is both lighter and stronger than any cast or flow-formed equivalent.

• Available diameters: 18 inch
• Construction: Fully forged monoblock
• Finish: Ultra-lightweight EJ-TI paint
• Weight: 7.61 kg (16.78 lbs) in 18x9.5 +35
• Best for: Serious track builds, competitive time attack, grip-focused street cars
• Key features: All standard TC105X tech plus AIR+α (alpha) for maximum internal air volume

At under 17 pounds in an 18x9.5 size, the TC105X Forged is remarkably light for a wheel of this diameter. That weight figure is competitive with some of the most expensive forged wheels on the market, backed by WedsSport's decades of motorsport validation.

TC105X Gravel

The TC105X Gravel is a purpose-built rally and off-road wheel, and it's the spiritual successor to the legendary WedsSport SA-90G. Where the standard and forged TC105X variants prioritize low weight above all else, the Gravel shifts the balance toward impact resistance and durability without abandoning the lightweight philosophy entirely.

• Available diameters: 15 inch
• Size: 15x7 +35, 5x100
• Construction: AMF flow-formed with reinforced structure
• Finish: White with blue line accent
• Best for: Rally, gravel racing, off-road Subaru builds, lifted Crosstreks and Foresters
• Key features: Increased vibration and impact resistance, larger sidewall tire compatibility

The 15-inch diameter is intentional. A smaller wheel allows you to run a tire with a significantly taller sidewall, which acts as additional suspension travel and impact absorption on rough surfaces. For rally-prepped WRXs, lifted Crosstreks, or Foresters built for fire roads, the Gravel is the obvious choice.

Variant Comparison

All three variants share the same TC105X design language and core WedsSport engineering philosophy, but they are tuned for very different environments. Picking the right one starts with knowing how you drive—which we'll cover in the next section.

Choosing the Right TC105X for Your Subaru Build

Now that you understand the engineering and the variants, it's time to match a TC105X to your specific Subaru. Fitment on Subaru's AWD platform is not something you want to guess on—the wrong wheel and tire combination can cause rubbing, drivetrain stress, or handling imbalance. Here's how to get it right.

Know Your Bolt Pattern

Subaru uses two primary bolt patterns across its lineup:

• 5x100 — Found on Impreza, WRX (2001–2014), BRZ, Crosstrek, Forester (most years), and Legacy/Outback (pre-2015)
• 5x114.3 — Found on STI (all years), WRX (2015+), and select newer Subaru models

This is the first filter. The TC105X Gravel is only available in 5x100, so it's off the table for 2015+ WRX and STI owners. The TC105X Forged is only available in 5x114.3, making it a natural fit for VA and VB WRX/STI builds. The standard TC105X covers both bolt patterns depending on the size selected.

Sizing by Platform

Here's a practical breakdown of how the TC105X lineup maps to popular Subaru platforms:

2015–2021 WRX (VA, 5x114.3)

The VA WRX is one of the most popular platforms for TC105X wheels. Common setups include:

• 18x9.5 +45 — Conservative, near-OEM fitment with no modifications needed. Great for daily drivers. Available as the TC105X EJ Titan 18x9.5 +45
• 18x9.5 +35 — Slightly more aggressive, fills the fender nicely on lowered cars. May need minor camber adjustment. Available as the TC105X Forged 18x9.5 +35
• 18x8.5 +45 — A narrower option for those prioritizing lighter weight or running a less aggressive tire. Available as the TC105X EJ Titan 18x8.5 +45

2008–2014 STI (GR/GV, 5x114.3)

The hatchback and sedan STI with Brembo brakes pairs well with 18-inch TC105X wheels. The 18x9.5 +45 is the safe starting point, with the +35 offset Forged variant adding a more flush look if you're running coilovers.

2015–2021 STI (VA, 5x114.3)

Same bolt pattern and similar fender geometry as the VA WRX, but the STI's Brembo 6-pots require an 18-inch minimum diameter. Both the standard and forged 18x9.5 options clear the factory big brakes without issue.

2013+ BRZ / GR86 (5x100)

The BRZ and GR86 chassis responds dramatically to wheel weight savings given its lighter curb weight. The standard TC105X in 17- or 18-inch 5x100 sizes is a popular choice for track-focused builds. For rally-cross or gravel events, the TC105X Gravel 15x7 +35 opens up tall sidewall tire options—though verify clearance with any aftermarket brake upgrades.

Crosstrek / Forester (5x100)

The TC105X Gravel was practically made for lifted Subaru builds. A 15x7 wheel with a 215/75R15 or 215/70R15 all-terrain tire creates a rally-inspired setup that's both functional off-road and visually striking. The 5x100 bolt pattern matches Crosstrek and most Forester model years directly.

Offset: The Number That Matters Most

Offset determines how far inward or outward the wheel sits relative to the hub mounting surface. On Subarus, offset has a huge impact on fitment:

• Higher offset (+45) — Wheel sits closer to the suspension. Safer for stock-height cars, less chance of fender contact
• Lower offset (+35) — Wheel sits further outward. Fills the fender gap on lowered vehicles but may require negative camber adjustment to avoid rubbing

If you're at stock ride height and running stock fenders, start with the higher offset. If you're on coilovers with 1–2 inches of drop, the lower offset will give you the flush, aggressive look without excessive poke.

Ride Height & Alignment Considerations

Lowering your Subaru introduces negative camber as the suspension geometry changes. Running a wider wheel or lower offset on a lowered car amplifies the need for proper alignment. Here's the general rule:

1. Stock height + 18x9.5 +45: No suspension modifications typically needed
2. Mild drop (1 inch) + 18x9.5 +38 to +45: A proper alignment is recommended; factory adjustment range usually sufficient
3. Aggressive drop (1.5+ inches) + 18x9.5 +35: Camber bolts or adjustable control arms likely needed for proper tire wear and fender clearance

Quick Reference: TC105X Options at SubiMods

Final Thoughts

The WedsSport TC105X isn't just a wheel—it's a statement about how seriously you take performance. Born from decades of Japanese motorsport R&D and validated at the highest levels of SuperGT racing, the TC105X delivers measurable improvements in unsprung weight, brake clearance, and driving feel that you'll notice from the first corner.

Whether you choose the versatile AMF flow-formed model for street and track duty, the ultralight Forged variant for competitive time attack, or the impact-resistant Gravel for rally and off-road adventures, you're getting a wheel engineered with purpose and built with precision in Japan.

The key to getting it right is matching the variant, size, and offset to your specific platform and goals. Stick to the fitment guidelines in this guide, pair your wheels with quality tires and a proper alignment, and you'll have a setup that looks incredible and performs even better.

Ready to upgrade? Browse our full WedsSport wheel collection and find the TC105X that fits your build.