Sturdo SUV
Recommended: Bridgestone Sturdo SUV. Engineered specifically for compact and mid-size SUVs to provide 29% longer tread life and comfort. Fully compatible with BMW X7 (285/45 R21).
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 2,240 kg. Provides structural headroom for passengers and cargo.
Speed Rating Symbol
High-Speed Performance Rated. Certified for sustained high-speed expressway travel without centrifugal belt delamination or carcass heat fatigue.
Radial (Tubeless Build)
Dual steel belt with spiral-wrapped nylon cap ply and pothole-resistant sidewall buffer
Factory Cold Inflation Pressure
Calibrated OEM cold tyre pressure for BMW X7. For full passenger/luggage payload, increase rear tyre to 33 PSI.
Tread Compound & Depth
Bridgestone Wear-Resistant 3D Polymer Matrix with reinforced carbon black. 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 Bridgestone India Kheda (Indore) / Chakan (Pune) Facilities.
Tyre Engineering Features
Specialized wear-resistant polymer layout
Longest tyre tread life in its class
Double ply steel belt package for rigidity
Silent vibration-free cabin experience
Wide central channels evacuate water fast
Excellent stability on national highways
3 Reasons to Choose
High-speed highway travel and everyday city use for BMW X7.
Recommended: Bridgestone Sturdo SUV. Engineered specifically for compact and mid-size SUVs to provide 29% longer tread life and comfort. Fully compatible with BMW X7 (285/45 R21).
Tyre Test Metrics
Empirical proving-ground telemetry covering ISO wet braking distance, acoustic cabin decibels, high-mileage compound longevity, and lateral road adhesion.
Stops 2.3m shorter than standard commuter baseline under monsoon downpour conditions.
Rolling resistance of 7.6 kg/t. Bridgestone Wear-Resistant 3D Polymer Matrix with reinforced carbon black minimizes heat drag during highway cruising.
Built specifically for rough Indian roads with up to 29% longer wear life.
Variable pitch tread design dampens rhythmic road impact noise.
Wide flat contact patch distributes load evenly across turns.
Evacuates up to 28 liters of water per second through Continuous lateral channels direct monsoon water away from contact patch.
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 |
|---|---|---|---|---|
| BMW X7Trims: xDrive40i, xDrive40dModel Years: 2019 - 2024 | 285/45 R21 | 88H(560 kg / 210 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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