Primacy 4ST
Recommended: Michelin Primacy 4ST. Ultra-silent luxury acoustic comfort with class-leading wet braking safety. Fully compatible with Porsche 911 Carrera (245/35 R20).
Detailed Parameters
Precision factory engineering parameters, carcass ply architecture, and certified load-speed performance ratings.
Load Index Rating
Total 4-wheel gross load tolerance of 2,760 kg. Provides structural headroom for passengers and cargo.
Speed Rating Symbol
Supercar & Track Grade Spec. Certified for sustained high-speed expressway travel without centrifugal belt delamination or carcass heat fatigue.
Radial (Tubeless Build)
Acoustic MaxTouch Casing with dual high-tensile steel belts and cushioned undertread
Factory Cold Inflation Pressure
Calibrated OEM cold tyre pressure for Porsche 911 Carrera. For full passenger/luggage payload, increase rear tyre to 33 PSI.
Tread Compound & Depth
Michelin FlexMax 2.0 with EverGrip self-regenerating water sipes. Built with integrated Tread Wear Indicators (TWI) calibrated at the 1.6mm legal limit.
Warranty & Genuine Origin
100% Genuine authorized Amman Tyres stock. Certified with BIS / ISI Indian safety marks, manufactured at Michelin World-Class Facility, Chennai (Tamil Nadu) / Thailand.
Tyre Engineering Features
Silent Rib Technology eliminates high-frequency noise
Whisper-quiet highway ride quality
EverGrip Technology maintains wet grip even when worn
Outstanding wet monsoon emergency braking
High-density silica polymer blend for supple ride
Plush bump absorption over potholes
3 Reasons to Choose
High-speed highway travel and everyday city use for Porsche 911 Carrera, Ferrari 296 GTB, Ferrari 296 GTS.
Recommended: Michelin Primacy 4ST. Ultra-silent luxury acoustic comfort with class-leading wet braking safety. Fully compatible with Porsche 911 Carrera (245/35 R20).
Tyre Test Metrics
Empirical proving-ground telemetry covering ISO wet braking distance, acoustic cabin decibels, high-mileage compound longevity, and lateral road adhesion.
Stops 5.7m shorter than standard commuter baseline under monsoon downpour conditions.
Rolling resistance of 7.2 kg/t. Michelin FlexMax 2.0 with EverGrip self-regenerating water sipes minimizes heat drag during highway cruising.
The global benchmark for silent luxury ride comfort and shortest wet stopping distance.
2nd Gen Silent Rib technology eliminates air pumping noise inside the tread grooves.
StabiliGrip self-locking sipes keep blocks rigid under hard steering loads.
Evacuates up to 34 liters of water per second through EverGrip sipes expand as tread wears to maintain 100% water clearance throughout life.
Supported Dimensions
Verified OEM vehicle fitments, factory inflation pressures, and axle load ratings calibrated for daily driving safety.
| Compatible Vehicle & Trims | Required Tyre Size | Load / Speed Index | Factory Cold Pressure (PSI) | OEM Verification |
|---|---|---|---|---|
| Porsche 911 CarreraTrims: Carrera, Carrera S, Carrera 4 GTS etc.Model Years: 2019 - 2024 | 245/35 R20 | 95Y(690 kg / 300 km/h) | 32 PSI (Front) / 30 PSI (Rear)All Axles: Front / Rear (32 PSI Front / 30 PSI Rear) | OEM VERIFIED |
| Ferrari 296 GTBTrims: standard, Assetto FioranoModel Years: 2022 - 2024 | 245/35 R20 | 95Y(690 kg / 300 km/h) | 32 PSI (Front) / 30 PSI (Rear)All Axles: Front / Rear (32 PSI Front / 30 PSI Rear) | OEM VERIFIED |
| Ferrari 296 GTSTrims: standard, Assetto FioranoModel Years: 2022 - 2024 | 245/35 R20 | 95Y(690 kg / 300 km/h) | 32 PSI (Front) / 30 PSI (Rear)All Axles: Front / Rear (32 PSI Front / 30 PSI Rear) | OEM VERIFIED |
| Ferrari Roma SpiderTrims: standardModel Years: 2023 - 2024 | 245/35 R20 | 95Y(690 kg / 300 km/h) | 32 PSI (Front) / 30 PSI (Rear)All Axles: Front / Rear (32 PSI Front / 30 PSI Rear) | OEM VERIFIED |
| Ferrari SF90Trims: Stradale / Spider depending on availabilityModel Years: 2020 - 2024 | 245/35 R20 | 95Y(690 kg / 300 km/h) | 32 PSI (Front) / 30 PSI (Rear)All Axles: Front / Rear (32 PSI Front / 30 PSI Rear) | OEM VERIFIED |
| Maserati MCPURATrims: CoupeModel Years: 2024 | 245/35 R20 | 95Y(690 kg / 300 km/h) | 32 PSI (Front) / 30 PSI (Rear)All Axles: Front / Rear (32 PSI Front / 30 PSI Rear) | OEM VERIFIED |
| Maserati MCPURA CieloTrims: SpiderModel Years: 2024 | 245/35 R20 | 95Y(690 kg / 300 km/h) | 32 PSI (Front) / 30 PSI (Rear)All Axles: Front / Rear (32 PSI Front / 30 PSI Rear) | OEM VERIFIED |
| Maserati GT2 StradaleTrims: GT2 StradaleModel Years: 2024 | 245/35 R20 | 95Y(690 kg / 300 km/h) | 32 PSI (Front) / 30 PSI (Rear)All Axles: Front / Rear (32 PSI Front / 30 PSI Rear) | OEM VERIFIED |
| Aston Martin ValhallaTrims: CoupeModel Years: 2024 | 245/35 R20 | 95Y(690 kg / 300 km/h) | 32 PSI (Front) / 30 PSI (Rear)All Axles: Front / Rear (32 PSI Front / 30 PSI Rear) | OEM VERIFIED |
| Lotus EmiraTrims: Turbo, V6Model Years: 2022 - 2024 | 245/35 R20 | 95Y(690 kg / 300 km/h) | 32 PSI (Front) / 30 PSI (Rear)All Axles: Front / Rear (32 PSI Front / 30 PSI Rear) | OEM VERIFIED |
Frequently Asked Questions
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