Sedans, coupes, CUVs and SUVs are the targets of the Michelin Primacy Tour, an all-season tire built for longer wear, comfort and year-round capability. The asymmetric five-rib tread gives a quiet, refined drive, wide shoulder blocks add dry grip, and zigzag sipes help when light winter weather appears.
The 315/40R21 size is rated 111H for load and speed. It offers 8.5/32-inch tread depth, a 44 psi maximum inflation pressure, a UTQG rating of 540AA and an overall diameter of about 30.9 inches. This size carries a 55,000-mile treadwear warranty.
| Tire size | 315/40R21 |
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| Tire load index | 111 |
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| Tire speed rating | H |
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| Tire load range | B |
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| Tire season | All-Season |
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| Tire terrain | Highway Terrain |
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| Uniform tire quality grade (utqg) | 540 A A |
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| Tire treadwear rating | 540 |
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| Tire sidewall style | Black Sidewall |
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| Tread depth | 8.5/32 |
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| Overall diameter | 30.9 in |
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| Manufacturer | MICHELIN NORTH AMERICA |
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| Tire width | 315 mm |
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| Vehicle fitment type | Universal |
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| Is run flat | N |
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| Vehicle type | Car |
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| Construction type | Radial |
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| Electric vehicle tire | Y |
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| Wheel diameter | 21 in |
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| Flotation tire | N |
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| Maximum vehicle rim width | 12.5 in |
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| Features | Wet or Dry, Low Maintenance, All-Weather |
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| Minimum vehicle rim width | 10.5 in |
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| Total count | 1 |
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| Vehicle class designator | P |
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| Tire location | Front and Rear Tires |
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| Tire diameter | 21 in |
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| Tire type | Passenger Car Tires |
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| Model | 57260 |
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| Maximum inflation pressure | 44 psi |
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| Tire aspect ratio | 40 |
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Specifications are as published by the manufacturer. Please confirm the size against the placard on your vehicle before ordering.
