We put the Cayman GTS 4.0’s standard iron brakes through instrumented testing to quantify 100–0 km/h and 60–0 mph stopping distances, then pushed into repeated stops to judge fade, pedal feel, and modulation. Here’s what we found.
Our test car was a 2024 Porsche 718 Cayman GTS 4.0 (6MT) on Michelin Pilot Sport 4S tires (F: 235/35ZR20, R: 265/35ZR20). Brakes are the standard setup: 350 mm x 34 mm two-piece front rotors with six-piston monobloc calipers and 330 mm x 28 mm rears with four-piston calipers. Curb weight is quoted at 1,405 kg; tested mass with driver and fuel measured 1,465 kg. Factory pads and DOT 4 fluid were retained to evaluate the baseline.
Testing was conducted on a closed, dry asphalt runway at 25°C with light crosswind. Tires were set to 32 psi cold (stabilizing at 35/36 psi hot). ESC/ABS remained fully on. We used a Racelogic VBOX 3i and averaged runs in both directions to correct for a 0.3% grade.
Each stop was executed with a firm, quick initial pedal application to full ABS, releasing at a walking pace to avoid ABS lock at zero. Headline numbers: the Cayman stopped from 60–0 mph in an average 104 ft (best 102 ft, worst 107 ft) at a peak decel of 1.13 g. From 100–0 km/h it recorded 33.9 m on average (best 33.2 m, worst 34.7 m), which aligns with the expected ~7% delta between the two metrics. The car tracks arrow-straight under full ABS, and the PS4S tires provide consistent bite without early onset of flat-spotting or chatter.
For fade resistance, we performed 10 consecutive 100–0 km/h stops with 45 seconds of light rolling to simulate real road cooldown. Distances drifted modestly from 33.9 m on the first stop to 35.1 m at worst, with an average of 34.2 m across the set. Peak decel tapered from 1.13 g to 1.08 g by stop ten. Infrared rotors peaked at 420°C front and 355°C rear; we noted pad aroma but no smoke, no fluid boil, and no pedal sink.
Pedal feel is a standout: short travel, firm build, and a progressive ramp that makes it easy to meter just shy of ABS. Initial bite is clean rather than grabby, which helps in low-grip or wet conditions. ABS is well-tuned—minimal pulsing through the pedal and stable wheel control over surface seams. Around town, cold bite is still confident, with occasional light squeal when reversing after rain.
Dust is moderate; after a week of mixed driving, the front wheels needed a wipe. Verdict: These standard iron brakes are track-session capable and road-perfect. Unless you plan repeated high-speed lapping on stickier rubber (Cup 2/R) or in high ambient heat, PCCB is unnecessary. For heavy track use, a high-temp fluid (DOT 4 Racing), slightly more aggressive pads, and diligent cooldown laps will keep performance near peak.
As delivered, the Cayman GTS 4.0 provides short, repeatable stops, exemplary modulation, and confidence that lasts beyond a single hero run.
