GT and Formula driving positions ask different things of a sim racing seat. A Formula-style setup usually places the driver lower and more reclined, with the pedals raised relative to the seat. A GT setup is generally more upright, with the pedals lower. The seat is one part of that geometry, alongside the wheel, pedals and screen.
You can enjoy both disciplines in one rig. The key is to choose a position that supports you properly and offers the adjustment you need, rather than assuming that changing the backrest angle alone recreates a different cockpit.
Understanding a Formula-style seating position
In a Formula-style setup, your torso leans farther back and your legs extend towards a relatively high pedal position. The seat needs to support your pelvis and back throughout that recline, while the wheel remains within comfortable reach.
There is no single backrest angle that suits every driver or rig. Seat shape, pedal height, leg support and your proportions all influence the result. A more reclined position should still let you apply the brake without sliding forward, locking your knees or pulling against the wheel to brace yourself.
A fixed bucket seat can provide defined support through its shell and bolsters. In a stationary simulator, however, you do not experience the cornering forces of a real Formula car. The practical benefits are support under pedal pressure and a repeatable seating position, rather than restraint against real on-track lateral loads.
Check the installed seat height as well as the backrest angle. Brackets and sliders add height, which can reduce the range available to bring the pedals into the position you want.

A GT position: more upright, with comfort for longer stints
A GT setup normally places your torso more upright and your feet lower relative to your hips. You should be able to turn the wheel with your shoulders supported and operate the pedals while maintaining a bend in your knees. Set reach and support together rather than copying one angle from another driver's rig.
For endurance sessions, pay attention to pressure points as well as the first impression of comfort. Seat width, lumbar support, cushion shape and upholstery all influence how the seat feels after a longer stint. Neither a bucket seat nor a reclining seat is automatically the most comfortable choice for every driver.
The compromise for drivers who switch between disciplines
A reclining seat makes it easier to adjust the backrest without changing the seat brackets. The SIMGASM Core Recline Seat is one option to consider for an adjustable setup. Check its adjustment range and mounting requirements against the driving position you want.
Reclining the backrest does not, on its own, turn a GT rig into a Formula rig. You may also need to change the pedal height and angle, wheel position and screen height. A slider helps with forward and backward reach, as explained in what seat sliders do in a sim racing rig, but does not replace those other adjustments.

The cockpit needs to support the complete position
Before choosing a frame, check whether the seat mounts, pedal tray and wheel mount can reach the positions you need. A Formula-style arrangement may require a lower seat, raised pedals and sufficient length for a more extended posture. A GT arrangement needs enough adjustment to keep your thighs supported and your controls within comfortable reach.
The SIMGASM Club measures 500 × 1350 × 620 mm, the Sport 580 × 1320 × 720 mm and the Pro 580 × 1320 × 750 mm, in width × length × height. That is approximately 19.7 × 53.1 × 24.4 inches, 22.8 × 52.0 × 28.3 inches and 22.8 × 52.0 × 29.5 inches respectively.
These overall dimensions help you plan floor space. They do not, by themselves, establish the seat-height range or confirm Formula-position compatibility. Check the adjustment of the actual seat brackets, pedal mounting and wheel mount, including any optional parts required.
Your screen position needs to follow your eye line
Changing the seating position also changes where your eyes sit relative to the screen. After reclining or lowering the seat, review the screen height, distance and in-game field of view. You should be able to look ahead comfortably while keeping your head supported naturally.
A suitable sim racing monitor stand can make those adjustments easier. Check its travel and screen compatibility, particularly if you expect to switch positions regularly.

Choose the construction for support and fit
A rigid shell can provide consistent support under braking, while a padded reclining seat offers convenient backrest adjustment. Neither construction belongs exclusively to one discipline. A well-fitting bucket can work for endurance racing, and a reclining seat can be useful for drivers who value flexibility.
Shell stiffness also does not create simulated weight transfer in a stationary rig. For tactile or motion-equipped setups, the response depends on the complete system, including the mounts, padding, actuators or transducers and their settings. Read steel, fibreglass or carbon fibre: choosing a sim racing seat for a practical material comparison.
For the adjustment trade-offs, see bucket seat or reclining seat: which suits your driving style? Whichever type you prefer, start with your measurements using how to measure the right sim racing seat size.
Compare the available sim racing seats, noting the seat dimensions, backrest shape and mounting requirements. Then check the corresponding aluminium sim racing cockpits for the adjustment needed to complete your position.
Frequently asked questions
Can one seat work for both GT and Formula racing?
Yes, if it supports you comfortably in your chosen positions and the cockpit offers the necessary adjustment. A reclining backrest and slider can help, but the pedals and wheel also need to move into suitable positions.
What backrest angle should I use for Formula?
Use a more reclined position as a starting point, then adjust it together with the pedals and wheel. There is no universal angle: you need continuous back support, comfortable reach and room to operate the pedals without locking your knees.
What backrest angle should I use for GT?
Start more upright than a Formula-style position. Adjust until your shoulders remain supported when steering and you can apply the brake without shifting your pelvis. Fit and comfort matter more than a particular number.
Does seat height matter as much as seat width?
Both matter for different reasons. Width affects fit and support; installed height affects your relationship to the pedals, wheel and screen. Include brackets and sliders when checking the final seat height.
Can I use a Formula-style bucket seat for endurance racing?
Yes, provided it fits and supports you comfortably over a full session. Pressure points depend on the shell shape, padding and your body, rather than the discipline label alone.
Building one rig for both disciplines? Contact SIMGASM with your height, seat preference and hardware so the team can help you check the available adjustment.