Alpha Rider wheel fitment tool for 13"–22" wheels, 4/5-lug hub — offset gauge, aluminum 6061

Fitment mistakes cost time and money. The Alpha Rider tool streamlines wheel mock-ups by attaching to the hub and giving clear, front-facing readings for diameter, width, and offset so you can verify clearance against fenders and suspension before mounting tires. Built from 6061 aluminum with stainless hand screws, this updated model measures inner and outer lips and accepts most common bolt patterns.

How do I use the Alpha Rider tool to check wheel offset and clearance?

Mount the tool base to the hub, enter wheel height and width, then align the indicator to the wheel lip. Read the offset from the front-facing scale and compare the red reference line to your fender or mock-up surface to confirm fitment. The device simplifies repeatable checks during test-fitting or fabrication.

• Attach base to hub using existing lug pattern (4 or 5 lugs supported).
• Set wheel diameter (13"–22") and width (6"–16") on the gauge.
• Use front-facing scale to read offset (-65mm to +65mm) and lip positions.
• Compare red line to fender or inner guard for clearance verification.

What measurements and wheel sizes does this tool handle?

The Alpha Rider tool covers a wide range of wheel specs so you can evaluate most passenger and light-truck wheels. It reports both inner and outer lip locations in addition to diameter, width, and offset, reducing guesswork when selecting spacers or adjusting backspacing.

• Wheel diameters: 13" through 22".
• Wheel widths: 6" to 16".
• Offset range: -65mm to +65mm.
• Compatible with 4- and 5-lug bolt patterns; measures inner and outer lips.

What materials and design upgrades improve usability?

Alpha Rider improved durability and operator convenience with corrosion-resistant materials and hand-adjustable hardware. The 6061 aluminum body resists rust and heat, while 304 stainless hand screws eliminate the need for Allen keys during on-car adjustments, speeding setup and reducing tool clutter.

• Main body: 6061 aluminum alloy for strength and rust resistance.
• Adjustment hardware: 304 stainless steel hand-tightening screws.
• Front-facing scale for easier, more accurate reading under load.
• Design measures both inner and outer wheel lips for full lip-to-fender assessment.

Can this tool be used for installation planning or shop workflow?

Yes — it’s designed for mock-ups, spacer selection, and quick shop checks prior to committing to tires or fender work. Technicians and DIYers can standardize fitment procedures, document readings, and avoid trial-and-error that leads to wasted parts or rework.

• Quick on-car checks speed decision-making during installations.
• Repeatable readings help document fitment for clients or records.
• Reduces risk of incorrect spacers, incorrect backspacing, or fender interference.
• Useful for fabrication, wheel/tire shops, and enthusiasts testing multiple setups.

Who this is for: The Alpha Rider Wheel Fitment Tool is aimed at automotive shops, wheel and tire professionals, custom fabricators, and serious enthusiasts who need a reliable, portable method to verify wheel diameter, width, and offset on 13"–22" wheels with 4- or 5-lug hubs. If you frequently test-fit wheels, choose spacers, or modify fenders, this tool reduces guesswork and speeds installations. For purchase questions or post-sale support, Alpha Rider provides customer assistance to resolve setup or compatibility concerns.