Car TyresBridgestone

Sturdo

Recommended: Bridgestone Sturdo. Designed with advanced polymers to yield up to 29% longer tyre mileage and comfortable cruising. Fully compatible with Porsche 911 Carrera (245/35 R20).

FITMENT SUMMARYPorsche 911 Carrera, Ferrari 296 GTB, Ferrari 296 GTS, Ferrari Roma Spider, Ferrari SF90, Maserati MCPURA, Maserati MCPURA Cielo, Maserati GT2 Stradale, Aston Martin Valhalla, Lotus Emira

AVAILABLE SIZES

165/80 R14 185/65 R15 195/55 R16 +50 more

View full specifications

TECH SPECS & MANUFACTURING TOLERANCES

Detailed Parameters

Precision factory engineering parameters, carcass ply architecture, and certified load-speed performance ratings.

Geometry & Dimension Telemetry

FORM FACTOR: 245/35 R20 • 95Y

Rolling Diameter

679.5 mm

Circumf: 2135 mm

Revolutions / KM

~468

Odometer Calibration

MAX LOAD SPECIFICATION

Load Index Rating

95(690 kg / tyre)

Total 4-wheel gross load tolerance of 2,760 kg. Provides structural headroom for passengers and cargo.

CERTIFIED LOAD RESERVE690 KG SPEC

HIGH-SPEED CERTIFICATION

Speed Rating Symbol

Y(300 km/h)

Supercar & Track Grade Spec. Certified for sustained high-speed expressway travel without centrifugal belt delamination or carcass heat fatigue.

CERTIFIED VELOCITY300 km/h

CARCASS ARCHITECTURE

Radial (Tubeless Build)

Tubeless Radial

Dual steel belt with spiral-wrapped nylon cap ply and pothole-resistant sidewall buffer

PLY: 6-PLY RATEDSTEEL BELTED RADIAL

OEM PRESSURE SPECIFICATION

Factory Cold Inflation Pressure

32 PSI / 30 PSI(Front / Rear)

Calibrated OEM cold tyre pressure for Porsche 911 Carrera. For full passenger/luggage payload, increase rear tyre to 33 PSI.

NITROGEN COMPATIBLE99.2% N₂ OPTIMAL

RUBBER FORMULATION

Tread Compound & Depth

8 mm(New Factory Tread)

Bridgestone Wear-Resistant 3D Polymer Matrix with reinforced carbon black. Built with integrated Tread Wear Indicators (TWI) calibrated at the 1.6mm legal limit.

UTQG WEAR INDEX: 460 A ATROPICALIZED

DEALER PROTECTION

Warranty & Genuine Origin

5 Years Manufacturer Warranty

100% Genuine authorized Amman Tyres stock. Certified with BIS / ISI Indian safety marks, manufactured at Bridgestone India Kheda (Indore) / Chakan (Pune) Facilities.

ORIGIN: IndiaAUTHORIZED HUB

INNOVATIVE TECH

Tyre Engineering Features

🧪

Wear-Resistant Polymer Matrix

Highly durable carbon compound slows tread wear rates by up to 29%.

🎯

Large Flat Contact Patch

Uniform force distribution limits asymmetric block shoulder wear.

BENCHMARK STANDARDS

3 Reasons to Choose

Exceptional Longevity

Specially built to match Indian city street road textures and pothole zones.

PERFORMANCE CHARACTERISTICS & PROVING GROUND LABS

Tyre Test Metrics

Empirical proving-ground telemetry covering ISO wet braking distance, acoustic cabin decibels, high-mileage compound longevity, and lateral road adhesion.

Laboratory & Proving Ground Test Suite • Bridgestone Sturdo

WET BRAKING (80-0 KM/H)GRADE B+

30.2METERS

Stops 2.3m shorter than standard commuter baseline under monsoon downpour conditions.

DECELERATION SAFETY INDEX77% SCORE

ROLLING RESISTANCE (RRC)ARAI GRADE B

+4.8%FUEL SAVINGS

Rolling resistance of 7.6 kg/t. Bridgestone Wear-Resistant 3D Polymer Matrix with reinforced carbon black minimizes heat drag during highway cruising.

FUEL CONSERVATION BOOST+4.8% REAL-WORLD

PROJECTED TREAD LIFEHIGH MILEAGE

85,000KM LIFE

Built specifically for rough Indian roads with up to 29% longer wear life.

UTQG TREADWEAR INDEX460 A A

ACOUSTIC CABIN NOISECOMFORT GRADE

69.2dB PASS-BY

Variable pitch tread design dampens rhythmic road impact noise.

CABIN SILENCE RATINGCERTIFIED (SUB-72dB)

DRY SLALOM & CORNERINGLATERAL STABLE

0.85PEAK G-FORCE

Wide flat contact patch distributes load evenly across turns.

LATERAL ROAD ADHESION85% G-LIMIT

HYDROPLANING CLEARANCE3D WATER SIPES

86KM/H THRESHOLD

Evacuates up to 28 liters of water per second through Continuous lateral channels direct monsoon water away from contact patch.

WATER CLEARANCE THRESHOLD86 KM/H SAFE

OFFICIAL FITMENT SPECIFICATIONS

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