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Pilot Sport 4 SUV

235/50R21 W (101)
4.8/5
(4 reviews)
  • B
    Fuel Efficiency
    Fuel Efficiency / Rolling Resistance: B

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

  • B
    Wet Grip
    Wet Grip / Braking Performance: B

    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.

  • B70 dB
    External Noise
    Noise Emission / Exterior Noise: B (70 dB)

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

  • Tick Icon Car
    Car tyre:

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

Fit from:03-09-2026
Fully Fitted Price
£39532
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What Does 235/50 R21 Mean?

235/50 R21 is the front original-equipment size on electric SUVs, for example the Porsche Macan Electric. 235 refers to the width in millimetres. 50 refers to the aspect ratio, or the sidewall height, which is 50 percent of 235mm, or 118mm. There is also enough space for a 21-inch wheel underneath the Macan's arches. R21 shows that it's a radial tyre which sits on a 21-inch rim, giving it an overall diameter of 768mm. We sell 235/50 R21, including XL, on Tyres.co.uk.

Part of the sizeValueWhat it means
Section width 235 The width of the tyre across the tread, measured in millimetres.
Profile (aspect ratio) 50 Sidewall height as a percentage of the width - here, 50% of 235 mm (about 118 mm).
Construction R Radial construction, which is what nearly all road tyres use.
Rim diameter 21 The wheel diameter the tyre fits, measured in inches.
Your tyre dimensions
MeasurementValue
Sidewall height 117.5 mm (4.63 in)
Overall diameter 768 mm (30.3 in)
Circumference 2,414 mm (95.0 in)
Revolutions 667 per mile · 414 per km
Equivalent sizes
SizeOverall diameter
235/55 R20 766 mm · -0.2%
255/50 R20 763 mm · -0.7%
255/45 R21 763 mm · -0.7%
255/40 R22 763 mm · -0.7%
245/45 R21 754 mm · -1.9%
245/50 R20 753 mm · -2.0%