225/50R18 99W Michelin e-Primacy ST XL
Original price was: $288.00.$268.00Current price is: $268.00.
Efficiency Unlocked. Electrified Comfort. The Michelin e-Primacy ST (225/50R18 99W XL) is a premium eco-touring summer tyre engineered specifically to maximize battery range and fuel efficiency for modern EVs and hybrid vehicles. Manufactured in China (CN) and guaranteed fresh 2026 (Y26) stock, it features Michelin’s Energy Passive Compound and CoolRunning Sidewall technology to offer unparalleled low rolling resistance. Fully EV-optimized, it combines a heavy-duty Extra Load (99) casing with “ST” (Silence Tuned) acoustic refinement to effortlessly manage the curb weight of electric platforms while delivering a remarkably quiet, plush ride. This 18-inch configuration is the definitive efficiency and comfort upgrade for vehicles like the Toyota C-HR, Lexus UX, and MINI Countryman. Enjoy completely transparent pricing and professional installation at TyresOnline.sg.
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Description
Michelin e-Primacy ST | 225/50R18 99W XL (Fresh 2026)
“Sovereign Efficiency. Extend Your Range, Elevate Your Comfort.”
Electric and premium hybrid vehicles prioritize two things above all else: maximizing battery range and preserving a hushed, serene cabin. The Michelin e-Primacy ST is purpose-built to deliver both. As Michelin’s flagship eco-conscious touring tyre, it is engineered from the ground up to support the energy transition. This highly advanced “ST” (Silence Tuned) variant focuses on dramatically lowering rolling resistance to stretch every kilowatt of battery power, while its acoustic tread design effectively mutes road roar. Guaranteed as a fresh Year 2026 (Y26) batch and featuring an Extra Load (XL) rating, this 18-inch configuration effortlessly supports the heavier battery weight of modern crossovers without compromising on Michelin’s legendary ride comfort or wet-weather safety.
Key Technical Features:
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🔋 Energy Passive Compound: A highly innovative rubber elastomer compound that significantly reduces energy dissipation as the tyre rolls. This best-in-class low rolling resistance directly extends your EV’s battery range (by up to 7% compared to standard tyres) or noticeably lowers fuel consumption for hybrid platforms.
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❄️ CoolRunning Sidewall: The sidewalls are specifically designed to absorb less energy during flexion. By reducing the heat generated as the tyre deforms under heavy loads, it further preserves your vehicle’s energy, making electric journeys smoother and more efficient.
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🔇 “ST” Silence Tuned Acoustic Pattern: Designed with variable-pitch tread blocks and U-shaped grooves to disrupt and absorb cavity resonance. This acoustic optimization effectively silences high-frequency road hum, perfectly complementing the quietness of electric motors.
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🛡️ EnergyAirShield Technology: A highly airtight inner liner compound reduces energy loss and maintains optimal tyre pressure longer, ensuring that the tyre’s eco-performance is sustained over time.
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⏳ MaxTouch Construction: Maximizes the tyre’s contact patch with the road, evenly distributing the immense torque and heavy curb weight of EVs during acceleration, braking, and cornering. This prevents premature wear and ensures excellent longevity.
| Specification | Detail |
| Size | 225/50R18 |
| Load Index | 99 (XL – Extra Load: Max Load 775 kg per tyre) |
| Speed Rating | W (Max Speed: 270 km/h) |
| Technology | Energy Passive Compound / ST (Silence Tuned) / EV-Optimized |
| Origin | CN (Manufactured in Michelin’s Advanced China Facilities) |
| Batch | Y26 (Fresh 2026 Production Compound) |
| Category | Premium Eco Touring / EV-Compatible Summer |
Perfect Fitment For:
In Singapore, this highly efficient, EV-optimized 18-inch configuration is the definitive eco-luxury upgrade for compact electric SUVs, premium hybrids, and crossovers seeking maximum range and absolute silence. It is highly recommended for:
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Toyota: C-HR (Standard 18-inch setups), Corolla Cross
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Lexus: UX (UX250h / UX300e Standard 18-inch setups)
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BMW: X1 (F48 18-inch setups), X2 (F39 18-inch setups)
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MINI: Countryman (F60 including SE ALL4 PHEV 18-inch setups)
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Honda: HR-V (RS / e:HEV 18-inch setups)
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Mazda: CX-30 (18-inch setups)
The TyresOnline.sg Advantage:
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Guaranteed Freshness: Manufactured in China (CN), this premium batch is confirmed Year 2026 (Y26) production—ensuring the advanced energy-saving compound is at peak elasticity to deliver maximum range, plushness, and longevity.
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Focused Precision EV Installation: Book your slot seamlessly online and drive away with freshly balanced, precision-fitted tyres. Our workshop focuses purely on technical tyre fitment and balancing. We understand the specific lifting requirements of heavy electric and hybrid vehicles to safely protect under-floor battery packs, ensuring a fast, specialized service without ever upselling you on additional maintenance parts or services that we do not perform.
Additional information
| Width | 225 |
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| Height | 50 |
| Rim size | 18 |
| Model | E-Primacy |
| Run Flat | No |
| Load / Speed Index | 99W |
| Brands | Michelin |
| Year | 2026 |




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