Castrol TOM’S Supra Legendary Rework. Part of AW Assetto Corsa mods collection.
The #36 Castrol TOM’S Toyota Supra is arguably the most recognizable silhouette in JGTC history, capturing Toyota’s first GT500 title in 1997. Yet, most versions available for Assetto Corsa treat it like a generic, modern GT3 car or a glorified highway cruiser with massive turbo lag and infinite grip.
Many popular community models ship with placeholder physics that completely ignore the technical regulations of late-’90s Japanese GT racing. This update is a meticulous “Ground-Up” physics and visual overhaul, built to replicate the brutal, high-downforce, restricted-engine reality of the 1997 GT500 champion.
🚗 The GT500 “Unicorn” Rework Philosophy
The mission was clear: strip away the generic modern GT behaviors and make the Supra feel like the highly specialized, front-mid engined weapon it was. The ’97 season was defined by extreme engineering adaptations, specifically Toyota’s choice to run a lightweight, high-boost inline-4 over the heavy factory 2JZ. This rework respects that mechanical lineage, demanding precise driving, aggressive momentum management, and respect for late-’90s tire technology.
🛠️ Key Technical Changes in This Update
- Restricted Turbo Logic & Power CurveThe real ’97 GT500 platform was entirely shaped by mandatory air restrictors that choked high-RPM breathing.
- The Restrictor Wall: We discarded the linear “infinite boost” curves. The new powerband models the exact behavior of the 2.0L 3S-GTE racing engine under JGTC choke regulations. Peak torque hits hard at 4,500 RPM, while peak power hits a flat plateau of 493 bhp at 6,900 RPM before suffocating near the limiter.
- Period-Correct Drivetrain: The 6-speed sequential gearbox and final drive ratios have been re-engineered to factory TOM’S specifications. Shifting efficiently within the narrow, restricted powerband is now vital to keeping the car in its sweet spot.
- Chassis Balance & Weight DistributionMoving the engine back and dropping the inline-6 transformed the Supra’s chassis dynamics in 1997.
- Front-Mid Layout Realism: The total weight and weight distribution have been corrected to meet the strict 1,150 kg GT500 minimum class limit, capturing the exact 52/48 front-heavy bias.
- Suspension Redesign: The independent double-wishbone suspension kinematics have been completely rewritten. Roll centers, track widths, and anti-roll bar geometry are completely overhauled to handle the direct, ultra-fast $360^\circ$ lock-to-lock steering rack. The car now demands immediate, sharp turn-in bite but requires stable rear-end management to prevent mid-corner washouts.
- Endurance Brake Tuning & Fuel ConsumptionGT500 racing wasn’t just about single-lap pace; it was about managing a platform over multi-hour stints.
- Thermal Brake Simulation: The carbon brake performance has been re-calibrated. Instead of modern over-assisted stopping power, you will feel a distinct change in initial bite and cooling behavior, requiring deliberate entry planning.
- Realistic Fuel Logic: Fuel consumption parameters have been mapped to authentic race consumption rates. Fuel weight now dynamically alters your center of gravity and braking markers throughout longer endurance stints.
- Tire Compounds & 3D Collider Rebuild
- New Tire Compounds: The ’97 season featured a fierce tire war. This update introduces custom-built slick compounds that capture the high-grip but narrow operating windows of late-’90s racing rubber. Warm-up cycles and slip-angle thresholds are highly sensitive.
- Collider Refit: The 3D collider has been entirely rebuilt from scratch. No more clipping invisible track geometry or getting violently launched by standard apex curbs—the car’s physical collision matches its physical footprint perfectly.
🏁 Visuals, Audio & Polish
To complete the immersion, this rework touches every layer of the mod’s presentation:
- Sound Improvements: The audio has been enhanced to capture the high-boost, high-frequency scream of the race-spec inline-4 and the mechanical whine of the sequential straight-cut gears.
- Material Refinements: Utilizing modern CSP shaders, visual assets have been updated to fix flat textures, correct headlight refractions, and polish bodywork reflectivity.
- General Bug Fixes: Eliminated legacy bugs including broken digital dash indicators, improper suspension graphical clipping, and aero map calculation errors.
By replacing fictionalized performance values with data-driven accuracy, this legendary rework transforms the Castrol Supra from a simple straight-line novelty into a demanding, authentic time capsule of JGTC’s golden era.
Real question?!
Can you master this legendary track monster, or will the restrictor wall and raw chassis feedback catch you off guard? Download the update now and find out.
11/07/2026 Update: Changed default brake balance for braking stability, added option to change it in setup. Reduced display emissive light. Added camera trajectory by MasterFocus.
14/07/2026 Update: Turbo logic updated to better mimic huge single turbo setup. New tire compound physics. New brake thermal performance. Stronger AI performance. BOP.
Installation Requirements
- Base Model: orig model by Yuki Is required and needs to be installed first.
- Method: Extract the contents into the content car’s folder, overwriting the
data,extension, anduifolders. - Requirement: Latest version of Custom Shaders Patch (CSP) is highly recommended for the lighting and tire shader fixes.
Download the Technical Physics Data (Google Drive
AC Mod – Toyota Supra GT500 ’97 Rework
AC Mod – Toyota Supra GT500 ’97 Data driven Rework.
Price Currency: €
Operating System: Windows 11
Application Category: GameApplication