Formula vs Round Steering Wheel for Sim Racing: How to Choose

Quick answer

Choose a formula or GT-style wheel if you mostly race open-wheel, prototype, or GT cars and want your hands close to the paddles and buttons. Choose a round wheel if you drift, rally, drive road cars, or frequently rotate the rim past 180 degrees. If you can only buy one, a 300 mm GT-style rim like the MOZA Racing GS V2 GT Steering Wheel is the most flexible middle ground.

Wheel shape changes how your hands sit, how far your thumbs reach for buttons, and how much rim you have to grab during a big correction. That makes it one of the few sim racing choices you feel on every single lap, not just when you change cars.

This comparison looks at formula and round rims as two ends of a spectrum, using real wheels from the catalog to show what each shape actually gives you. There is no universal winner here, only a shape that matches the cars you drive most.

What actually changes between formula and round rims

A formula or GT-style wheel uses a wider, flatter hub with the rim cut away at the top and bottom. Your hands sit at roughly nine and three, close to the shift paddles and rotary dials, which shortens the distance your fingers travel. The MOZA Racing CS Pro Steering Wheel shows this layout clearly with its 325 mm rim, GT3-style hub, and programmable lighting and input system.

A round wheel keeps a continuous circular rim, so you can grab it at any point as it rotates. That matters in rally, drifting, and road-car driving where you cross your arms or shuffle-steer through large lock. The trade-off is that buttons and paddles sit further from your resting grip, and the rim itself takes up more space on your wheel deck.

• Measure your available wheel deck width before buying: a 325 mm rim needs more clearance than a 300 mm one.
• Sit in your rig and check where your thumbs naturally land. If they rest near the top of the rim, a formula layout will feel cramped.

Rim size and grip: the numbers that matter

The MOZA Racing GS V2 GT Steering Wheel uses a 300 mm rim with perforated leather grips and a 5 mm forged carbon fiber frame and paddles. That 300 mm size is the common GT compromise: wide enough for leverage, narrow enough that your hands stay near the controls. Perforated leather also gives more grip than plain rubber over a long stint.

The MOZA Racing CS Pro Steering Wheel goes larger at 325 mm with a carbon fiber-reinforced construction. A bigger rim gives finer steering resolution because the same wheelbase rotation moves your hands further, but it also needs more torque from the base to feel equally strong. Neither size is wrong, they simply suit different cars and different hand sizes.

• Smaller hands generally prefer 300 mm or below; larger hands often find 320-325 mm more comfortable.
• If your wheelbase feels weak after switching to a bigger rim, that is physics, not a fault.

Paddles, buttons, and where your thumbs go

Formula-style rims put dual clutch paddles and programmable controls right behind your fingers. The MOZA Racing Lamborghini Revuelto Steering Wheel is built from original CAD data with an aluminum frame, carbon fiber dual-clutch paddles, and fully programmable controls, which is exactly the layout you want for standing starts and quick brake-bias changes.

Round rims usually carry fewer integrated controls because your hands move around the rim. That is fine for cars where you rarely change settings mid-corner, but it becomes a real limitation in formula or GT racing where you adjust traction control or fuel mix several times a lap. If you race those cars, the paddle and button placement is worth more than rim shape alone.

• Count how many inputs you actually use per lap before paying for a button-heavy rim.
• Dual clutch paddles are genuinely useful for race starts, not just a spec-sheet feature.

Mounting and quick release considerations

Shape also affects how the wheel sits on your rig. A formula rim's flat profile can push the display or dashboard further from your eyes, while a round rim's deeper dish may bring the rim closer to your chest. The Asetek SimSports Side Mount with Tilt lets you slide your wheelbase back and forth in the t-slots and angle it 10 degrees using four screws, two per side, which is a practical way to fix reach without buying a new rim.

If you plan to swap between a formula and round wheel, a consistent quick release matters more than either shape. The Ascher Racing Buchfink Q1R Base Side is designed for a reliable connection without play, and the base side is sold separately from the wheel side, so one base can serve multiple rims.

• Set your wheelbase position with your most-used rim, then accept small compromises on the second wheel.
• A no-play quick release protects force feedback detail, which matters more as wheelbase torque rises.

Trade-offs to weigh before you buy

• Control access vs rim freedom: Formula rims put paddles and buttons under your fingertips but limit where you can grip the rim. Round rims let you grab anywhere but push controls further from your resting hands. Pick based on how often you change settings mid-lap versus how often you steer past 180 degrees.
• Rim size vs required torque: A 325 mm rim like the MOZA Racing CS Pro gives finer steering resolution than a 300 mm rim, but the same wheelbase produces less felt force at the rim edge. Match rim size to your wheelbase torque and hand size rather than chasing the largest number.
• Single wheel vs multi-wheel setup: Buying one rim forces a compromise. Buying two only works if your quick release makes swapping fast and repeatable, which is where a no-play system like the Ascher Racing Buchfink Q1R Base Side earns its place. If you race both formula and rally cars regularly, budget for two rims and one good quick release.

Catalog facts behind these recommendations

• MOZA Racing GS V2 GT Steering Wheel: 300 mm GT-style wheel with perforated leather grips and a 5 mm high-strength forged carbon fiber frame and paddles. The 300 mm size and leather grips make it a practical all-rounder for GT and mixed driving without feeling oversized.
• MOZA Racing CS Pro Steering Wheel: 325 mm standard rim with carbon fiber-reinforced construction, a customizable high-definition display, and a fully programmable lighting and input system. The larger rim and on-wheel display suit drivers who want more steering resolution and live data in view.
• MOZA Racing Lamborghini Revuelto Steering Wheel: Officially licensed wheel recreated from original CAD data with an aluminum frame, carbon fiber dual-clutch paddles, and fully programmable controls. Dual-clutch paddles and a dense control layout are aimed at drivers who race formula and GT cars seriously.
• Asetek SimSports Side Mount with Tilt: Adjustable mounting option that slides the wheelbase back and forth in the t-slots and angles it 10 degrees with four screws, two on each side. Lets you correct reach and angle when you switch between a flat formula rim and a deeper round rim.

Which shape fits your driving

Choose a formula or GT-style wheel if you

• Race open-wheel, prototype, or GT cars most of the time and want paddle access without moving your hands
• Use dual clutch paddles for standing starts and adjust brake bias or traction control mid-race
• Have a wheelbase with enough torque to make a 300-325 mm rim feel strong

Choose a round wheel instead if you

• Drift, rally, or drive road cars where you regularly rotate the rim past 180 degrees
• Prefer to grab the rim at any point rather than keeping a fixed nine-and-three grip
• Rarely use on-wheel buttons and would rather spend the budget on a better wheelbase

Start with the cars you drive most, not the shape that looks best on a rig photo. If that answer is mixed, a 300 mm GT-style rim is the safest single purchase, and a no-play quick release lets you add a round rim later without starting over.