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Pilot Sport 4 S

285/25R20 Y (93)
  • D
    Fuel Efficiency
    Fuel Efficiency / Rolling Resistance: D

    How much fuel the tyre uses as it rolls. Graded A to E, where A is the most efficient and E the least.

  • A
    Wet Grip
    Wet Grip / Braking Performance: A

    How well the tyre stops in the wet. Graded A to E, where A is the shortest stopping distance. Each grade is worth roughly 3 metres, about a car length.

  • B73 dB
    External Noise
    Noise Emission / Exterior Noise: B (73 dB)

    How loud the tyre is from outside the car, measured in decibels. Graded A to C, where A is the quietest.

Wet Grip Excellence
  • Tick Icon Car
    Car tyre:

    Designed for cars, rather than vans, 4x4s or commercial vehicles.

  • Tick Icon Reinforced (XL)
    Extra Load or Reinforced tyres:

    A stronger sidewall lets this tyre carry more weight than a standard tyre of the same size. Marked XL on the sidewall.

Fit from:03-09-2026
Fully Fitted Price
£31942
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AS-2+

285/25R20 Y (93)
4.0/5
(1 reviews)
  • D
    Fuel Efficiency
    Fuel Efficiency / Rolling Resistance: D

    How much fuel the tyre uses as it rolls. Graded A to E, where A is the most efficient and E the least.

  • A
    Wet Grip
    Wet Grip / Braking Performance: A

    How well the tyre stops in the wet. Graded A to E, where A is the shortest stopping distance. Each grade is worth roughly 3 metres, about a car length.

  • B73 dB
    External Noise
    Noise Emission / Exterior Noise: B (73 dB)

    How loud the tyre is from outside the car, measured in decibels. Graded A to C, where A is the quietest.

Wet Grip Excellence
  • Tick Icon Car
    Car tyre:

    Designed for cars, rather than vans, 4x4s or commercial vehicles.

  • Tick Icon Reinforced (XL)
    Extra Load or Reinforced tyres:

    A stronger sidewall lets this tyre carry more weight than a standard tyre of the same size. Marked XL on the sidewall.

Fit from:03-09-2026
Fully Fitted Price
£21064
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285/25 R20 Numbers Explained

285/25 R20 is a tyre size used for high-performance cars fitted with aftermarket large wheels. The first number 285 is the width of the tyre in millimetres. The second number is the aspect ratio, so in this case the sidewall is 25% of 285mm, or 71mm. R20 indicates the radial tyre is on a 20-inch rim. The overall diameter is 650mm. Tyres.co.uk sells this size and its XL versions.

Part of the sizeValueWhat it means
Section width 285 The width of the tyre across the tread, measured in millimetres.
Profile (aspect ratio) 25 Sidewall height as a percentage of the width - here, 25% of 285 mm (about 71 mm).
Construction R Radial construction, which is what nearly all road tyres use.
Rim diameter 20 The wheel diameter the tyre fits, measured in inches.
Your tyre dimensions
MeasurementValue
Sidewall height 71.2 mm (2.81 in)
Overall diameter 650 mm (25.6 in)
Circumference 2,044 mm (80.5 in)
Revolutions 788 per mile · 489 per km
Equivalent sizes
SizeOverall diameter
275/30 R19 648 mm · -0.4%
285/30 R19 654 mm · +0.5%
295/25 R20 656 mm · +0.8%
265/30 R19 642 mm · -1.4%
295/30 R19 660 mm · +1.4%
305/25 R20 660 mm · +1.5%