235/45R21 97W Michelin E-Primacy S1
$485.00
The Michelin e.Primacy in size 235/45R21 97W is a flagship eco-responsible summer tyre, widely recognized as the 2026 leader in rolling resistance and efficiency. The S1 marking indicates a technically improved version of the original compound for enhanced performance, while (TH) confirms it was manufactured in Michelin’s high-tech Thailand facility.
The Y23 batch signifies 2023 production, making it a high-value option for drivers who want premium EV-specific technology at a more accessible price point.
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Description
Michelin e.Primacy (235/45R21 97W S1 TH Y23)
“Efficiency for the Long Run.” The 2026 Choice for Maximum EV Range.
The e.Primacy is Michelin’s first “CO2-neutral” tyre at the time of purchase. It is specifically engineered to bridge the gap between internal combustion engine (ICE) vehicles and Electric Vehicles (EVs), focusing on maximizing battery range and fuel economy.
| Specification | Detail |
| Size | 235/45R21 |
| Load Index | 97 (Max Load: 730 kg per tyre) |
| Speed Rating | W (Max Speed: 270 km/h) |
| Marking | S1 (Improved Technical Compound) |
| Batch | Y23 (2023 Production) |
| EU Label | Fuel: A / Wet Grip: B / Noise: 69dB |
✨ Key 2026 Technical Features
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⚡ Range Maximizer Technology:
The e.Primacy offers the lowest rolling resistance in its category. For EVs, this can translate to an increase in range of up to 7% (approx. 30km for a 400km charge). For petrol cars, it reduces fuel consumption by roughly 0.2L/100km.
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🧪 Energy Passive Compound:
This S1-spec compound is based on an elastomer with high connectivity to silica, which limits energy dissipation as the tyre flexes. This ensures the tyre remains “cool” during operation, further improving efficiency and longevity.
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🔇 Silent-Drive Tread Pattern:
Despite the large 21-inch size, the e.Primacy is engineered to be “eerily quiet” at 69dB. The tread design disrupts air resonance, which is essential for preserving the hushing silence inside luxury EVs like the Tesla Model Y or Mercedes EQE.
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📏 MaxTouch Construction:
This technology maximizes the tyre’s contact with the road and evenly distributes the forces of acceleration, braking, and cornering. This leads to a longer tread life, with some users reporting over 65,000 km of usable wear.
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🌧️ U-Shape Grooves:
Even as the tyre wears down, the U-shaped grooves maintain their width to ensure effective water evacuation. This provides consistent safety in the wet throughout the entire life of the tyre, essential for Singapore’s tropical rain.
📊 Performance Summary
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Battery/Fuel Efficiency: ⭐⭐⭐⭐⭐ (The 2026 industry leader)
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Cabin Silence: ⭐⭐⭐⭐⭐ (Optimized for EV refinement)
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Tread Longevity: ⭐⭐⭐⭐⭐ (Engineered to last an “extra year”)
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Wet Safety: ⭐⭐⭐⭐ (Solid Class-B braking performance)
The Michelin e.Primacy S1 is the premier “efficiency” choice for 2026. It is the best option if you drive a high-end electric SUV or a luxury hybrid and want to extract every possible kilometer from your battery while enjoying a silent, premium ride.
Additional information
| Width | 235 |
|---|---|
| Height | 45 |
| Rim size | 21 |
| Model | E-Primacy |
| Run Flat | No |
| Load / Speed Index | 97W |
| Brands | Michelin |
| Year | 2023 |








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