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145/70R12 T (69)
4.7/5
(3 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.

  • 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.

Great Value
  • Tick Icon Car
    Car tyre:

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

Fit from:05-09-2026
Fully Fitted Price
£6362
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145/70 R12 Numbers Explained

145/70 R12 gives the size of the classic Mini tyre, used for small cars. 145 is the width of the tyre in millimetres. 70 is the aspect ratio, which in this case makes 102mm the sidewall height. R12 means a radial tyre on a 12-inch rim, making an overall diameter of 508mm. Driving a Classic Mini means those small wheels will be able to absorb some of the roughness of the road thanks to the sidewall height. Tyres.co.uk has 145/70 R12 in stock.

Part of the sizeValueWhat it means
Section width 145 The width of the tyre across the tread, measured in millimetres.
Profile (aspect ratio) 70 Sidewall height as a percentage of the width - here, 70% of 145 mm (about 102 mm).
Construction R Radial construction, which is what nearly all road tyres use.
Rim diameter 12 The wheel diameter the tyre fits, measured in inches.
Your tyre dimensions
MeasurementValue
Sidewall height 101.5 mm (4.00 in)
Overall diameter 508 mm (20.0 in)
Circumference 1,595 mm (62.8 in)
Revolutions 1,009 per mile · 627 per km
Similar sizes
SizeOverall diameter
165/55 R13 512 mm · +0.8%
165/60 R12 503 mm · -1.0%
155/70 R12 522 mm · +2.8%