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The 315/40 R21 tire has the following characteristics: a width of 315, a height of 40 and a diameter of 21 inches. These dimensions exist for summer tires and winter tires.
These tire dimensions are suitable for vehicles in saloons, people carriers, sports models, SUVs categories.
See our selection of 315/40 R21 tires below, including indications of fuel consumption, adhesion on wet ground and external road noise.

  • Favorites
    Car tire Michelin Primacy Tour A/S
    See product data sheet

    Michelin Primacy Tour A/S

    315/40 R21 111 H
    • MO
    • MO: Mercedes approved tires
    Car tires All seasons winter approved
    • 4 in stock
    • 10 to 13 working days
    $628 ⁠23
    /tire
    Rate this tire
  • Top brand recommended
    Car tire Pirelli Scorpion Winter
    See product data sheet

    Pirelli Scorpion Winter

    315/40 R21 111 V
    • MO
    • MO: Mercedes approved tires
    4x4 road tires Winter
    • In stock
    • 10 to 13 working days
    $673 ⁠39
    /tire
    ★★★★★
    (Reviews: 52)
  • Car tire Michelin Primacy Tour A/S
    See product data sheet

    Michelin Primacy Tour A/S

    315/40 R21 111 H
    • MO
    • MO: Mercedes approved tires
    Car tires All seasons winter approved
    • 4 in stock
    • 10 to 13 working days
    $628 ⁠23
    /tire
    Rate this tire
  • Car tire Pirelli Scorpion Winter
    See product data sheet

    Pirelli Scorpion Winter

    315/40 R21 111 V
    • MO
    • MO: Mercedes approved tires
    4x4 road tires Winter
    • In stock
    • 10 to 13 working days
    $673 ⁠39
    /tire
    ★★★★★
    (Reviews: 52)
  • Car tire Goodyear Ultragrip Performance 3
    See product data sheet

    Goodyear Ultragrip Performance 3

    315/40 R21 115 V
    • XL
    • NC0
    • XL: Reinforced tires. Have a higher load index.
    • NC0: Porsche approved tyres (Cayenne).
    4x4 road tires Winter
    • In stock
    • 10 to 13 working days
    $715 ⁠61
    /tire
    ★★★★★
    (Reviews: 5)
  • Car tire Michelin Pilot Alpin 5
    See product data sheet

    Michelin Pilot Alpin 5

    315/40 R21 115 V
    • XL
    • (N0)
    • XL: Reinforced tires. Have a higher load index.
    • (N0): Porsche approved tires. The numerical escalation of Porsche N-Spec tires reflect either enhancements to the previous generation of the same tire model.
    Car tires Winter
    • 8 in stock
    • 10 to 13 working days
    $891 ⁠00
    /tire
    ★★★★★
    (Reviews: 20)

315/40 R21 car tires
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Speed index
For winter tyres, the speed rating can be lowered to 2 ratings below the original (unless otherwise specified by the maker).
Inversely, for all tyres, you can fit tyres with speed ratings higher than the original ones if necessary.
Load index
You can fit tires with a load index higher than that of your original tires.
Vehicle / usage
Characteristics

Price
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Grip on wet surface
Measure the impact of a vehicle's wet grip
Fuel consumption
Measure the impact of a tire's rolling resistance on a vehicle's fuel efficiency
Noise
Measure a tire's external rolling noise (expressed in decibels) - this is not the tire noise audible inside a vehicle
Don't know which tire to choose? See Pneus Online selections