The Quietest Grand Touring All-Season Tire in Its Class — Michelin Primacy Tour A/S 225/45R21 95W For drivers of premium luxury sedans, coupes, crossovers, and SUVs running 21-inch wheels — vehicles where silence, refinement, and composed all-season performance define the driving experience — the Michelin Primacy Tour A/S 225/45R21 95W is the tire that sets the standard for what a grand touring all-season tire should feel like. Trusted as original equipment by the most demanding premium vehicle manufacturers in the world, this tire has earned its place on 21-inch wheels through a combination of engineering achievements that competing tires in its class simply cannot match.
The Primacy Tour A/S is Michelin’s Grand Touring All-Season tire developed for the drivers of family sedans, coupes, crossovers and SUVs looking to maximize ride and noise comfort and maintain year-round traction. The Primacy Tour A/S is designed to deliver a premium driving experience combined with all-season capability, even in light snow.
Chosen by leading premium car manufacturers like Acura, Lexus, BMW, Mercedes-Benz, and Cadillac — brands whose engineering teams subject tires to the most rigorous OE evaluation processes in the automotive industry — the Primacy Tour A/S earns this trust through measurable, test-verified performance advantages across every metric that matters to luxury vehicle drivers.
Thanks to its innovative PIANO Noise Reduction Tuning, which includes frequency cancelling shoulder grooves and block chamfers, you can say goodbye to road noise and hello to tranquility. Whether you’re cruising on the highway or navigating city streets, this tire ensures that your journeys are peaceful and enjoyable. The result is a tire that has earned the distinction of featuring the quietest tread design among leading competitors — a claim independently verified through objective interior noise tests comparing the Primacy Tour A/S against the Bridgestone Turanza Serenity Plus, Continental PureContact, Pirelli Cinturato P7 All-Season Plus, and Goodyear Assurance ComforTred.
The five-rib pattern of the Primacy Tour A/S’s asymmetric tread design is tuned to provide the refined, quiet ride expected of a luxury touring tire. Wide outboard shoulder blocks aid dry handling and lateral grip, and sweeping grooves help evacuate water for hydroplaning resistance. Zigzag sipes located in the center and inboard ribs, as well as the inside shoulder, provide traction in snow and on ice.
Real-world Michelin Primacy Tour A/S drivers confirm this performance: “These tires are QUIET!!! The wet traction is far superior to the original tires. Well done Michelin.” And: “Wet traction, dry traction and comfort/quietness are top-notch, and dramatically improved every aspect of driving on my 2021 Hyundai Kona.
For drivers shopping the full Michelin Primacy lineup, see the Michelin Primacy MXM4 235/55R18 100H for an alternative grand touring all-season option in a smaller wheel fitment.
✅ KEY FEATURES & BENEFITS
- Quietest Tread Design in Its Class — Michelin Primacy tires are the top choice for premium vehicles. The Tour A/S has the quietest tread design in its class with enhanced noise reduction tuning that combines noise cancelling shoulder grooves with smooth belts for an amazingly quiet ride — verified through independent objective interior noise tests against leading competitors.
- PIANO Noise Reduction Tuning — PIANO Noise Reduction Tuning combines frequency cancelling shoulder grooves and block chamfers with ultra smooth belts — a proprietary Michelin noise engineering system that targets the precise frequency ranges most noticeable to passengers in a luxury vehicle cabin.
- 17% Better Snow Traction Than the Primacy MXM4 — These tires have 17% better snow traction than the Michelin Primacy MXM4, based on third-party snow traction tests using ASTM Test Method F1805-12 — a significant winter capability upgrade for a grand touring all-season tire fitted on a luxury 21-inch wheel.
- Grand Touring All-Season for Premium 21-Inch Vehicles — Developed for drivers of family sedans, coupes, crossovers and SUVs looking to maximize ride and noise comfort and maintain year-round traction, with all-season capability even in light snow. Voguetyre
- Five-Rib Asymmetric Tread Design — The five-rib pattern of the Primacy Tour A/S’s asymmetric tread design is tuned to provide the refined, quiet ride expected of a luxury touring tire. Wide outboard shoulder blocks aid dry handling and lateral grip, and sweeping grooves help evacuate water for hydroplaning resistance. Voguetyre
- Zigzag Sipes for Snow & Ice Traction — Zigzag sipes located in the center and inboard ribs, as well as the inside shoulder, provide traction in snow and on ice — delivering confident winter capability on a tire that is also the quietest in its class in dry and wet conditions.
- Advanced Rubber Compound — Temperature Flexible — Equipped with the latest generation of advanced rubber compound, the Michelin Primacy Tour A/S offers exceptional traction on both wet and dry surfaces — a compound formulated to remain flexible in cold temperatures for consistent all-season grip and braking performance.
- Two-Ply Polyester Cord Casing + Twin Steel Belts — The internal construction of the Primacy Tour A/S consists of a two-ply polyester cord casing that promotes ride comfort, and two steel belts stabilize the tread — the structural architecture that enables the tire’s smooth ride, consistent handling, and extended tread life.
- Polyamide Reinforcement Layer — A polyamide reinforcement layer improves handling and high-speed capability — the belt package enhancement that enables the W-speed rating and high-speed stability expected on a 21-inch luxury tire.
- OE for Acura, Lexus, BMW, Mercedes-Benz & Cadillac — Chosen by leading premium car manufacturers like Acura, Lexus, BMW, Mercedes-Benz, and Cadillac — the most direct endorsement possible of the Primacy Tour A/S’s engineering standards and real-world performance capability.
- Hydroplaning Resistance — Sweeping grooves help evacuate water for hydroplaning resistance — designed to maintain confident, planted handling on rain-soaked roads at highway speeds on 21-inch wheel fitments.
- W-Speed Rated — Up to 168 mph — Certified for sustained performance up to 168 mph — exceeding the performance demands of all standard production luxury sedans, SUVs, and crossovers running 225/45R21 sizing.
- UTQG 540 B A — UTQG 540 B A — an exceptional treadwear grade of 540 with top-tier temperature resistance confirming superior long-term durability and service life. ShopCWO
- 45,000-Mile Limited Treadwear Warranty — Backed by a 45,000 mile limited treadwear warranty — Michelin’s commitment to the long-term quality and durability of the Primacy Tour A/S on premium 21-inch vehicle applications.
- Free Shipping — Free shipping on all orders within the continental U.S.
📐 TECHNICAL SPECIFICATIONS
| Specification | Details |
|---|---|
| Tire Size | 225/45R21 |
| Load Index | 95 |
| Speed Rating | W (up to 168 mph) |
| Load Range | SL (Standard Load) |
| Max Load Capacity | 1,521 lbs @ 51 PSI |
| Max Inflation Pressure | 51 PSI |
| Sidewall | Blackwall (BSW) |
| Season | All-Season (Grand Touring) |
| UTQG Treadwear | 540 |
| UTQG Traction | B |
| UTQG Temperature | A |
| Tread Design | Asymmetric Five-Rib |
| Noise Technology | PIANO Noise Reduction Tuning |
| Sipe Technology | Zigzag Sipes (center, inboard, shoulder) |
| Belt Construction | Two Steel Belts + Polyamide Reinforcement |
| Body Ply | Two-Ply Polyester Cord |
| Overall Diameter | 28.9 inches |
| Section Width | 8.9 inches |
| Measured Rim Width | 7.5 inches |
| Rim Width Range | 7.0 – 8.5 inches |
| Tread Depth | 9/32 inch (9mm) |
| Revolutions Per Mile | 719 |
| Tire Weight | 27.3 lbs |
| Shipping Weight | 27.34 lbs |
| Treadwear Warranty | 45,000 miles |
| Manufacturer Part # | 27145 |
| Tire Type | Grand Touring All-Season |
| Vehicle Application | Luxury Sedans, Coupes, Crossovers, SUVs (21-inch) |








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