Porsche 718 Cayman GT4 Clubsport / Audi R8 LMS GT4

The Porsche 718 Cayman GT4 Clubsport and the Audi R8 LMS GT4 represent two distinct approaches to race car engineering, each excelling in different aspects of performance and track dynamics. Both vehicles are rear-wheel drive race cars, yet their engine configurations, weight, and power outputs highlight contrasting philosophies in achieving competitive lap times. 

The Porsche 718 Cayman GT4 Clubsport is powered by a naturally aspirated aluminum six-cylinder mid-mounted boxer engine producing 425 horsepower and 425.73 lb-ft of torque. Weighing in at 2,910 lbs and equipped with a 6-speed PDK gearbox, it emphasizes balance, agility, and precision. Its mid-engine layout contributes to excellent weight distribution, enhancing cornering stability and responsiveness. The car’s 0-60 mph time of 4.2 seconds underscores its quick acceleration, while its relatively compact dimensions and lighter weight make it exceptionally nimble on technical circuits. 

In contrast, the Audi R8 LMS GT4 boasts a more powerful normally aspirated 5.2-liter V10 engine delivering 495 horsepower. Although heavier at 3,218 lbs, it compensates with a 7-speed double-clutch S tronic transmission and a top speed of 198 mph. The Audi’s wider track and lower height suggest a focus on aerodynamic stability and high-speed grip. While the R8 LMS GT4 lacks published 0-60 mph data, its power advantage and advanced transmission hint at strong straight-line performance and robust acceleration. 

When comparing lap times across various circuits, the Porsche 718 Cayman GT4 Clubsport often demonstrates superior agility and pace on more technical and flowing tracks. For instance, at the Circuit de Spa-Francorchamps, the Porsche recorded a lap time of 2:31.100, edging out the Audi’s 2:32.996 by nearly two seconds. This suggests the Porsche’s lighter weight and mid-engine balance provide an advantage in handling the complex corners and elevation changes of Spa. 

Similarly, at Apex Motor Club I, the Porsche again outpaced the Audi with a 1:33.870 lap compared to the Audi’s 1:32.480, though here the Audi was slightly quicker, indicating that on shorter, possibly more power-dependent tracks, the Audi’s horsepower and transmission may offer an edge. 

On faster, more power-oriented circuits like Road America, the Audi R8 LMS GT4 clearly asserts its dominance with a best lap of 2:19.980, significantly faster than the Porsche’s 2:24.050 in race trim and 2:20.460 in stock trim. This performance gap highlights the Audi’s superior power and aerodynamic capabilities, allowing it to maximize speed on long straights and high-speed corners despite its heavier weight. 

In summary, the Porsche 718 Cayman GT4 Clubsport excels in agility, balance, and technical cornering, making it a formidable competitor on twisty, demanding circuits. The Audi R8 LMS GT4, with its higher horsepower and aerodynamic presence, shines on faster tracks where outright speed and power are paramount. Both cars offer compelling race performances, but their strengths cater to different track characteristics and driving styles, underscoring the diversity in GT4 race car design and engineering.