Buy 145/80 R12 Tyres

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Milemax

145/80R12 Q (86)
3.5/5
(2 reviews)
  • C
    Fuel Efficiency
    Fuel Efficiency / Rolling Resistance: C

    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.

  • B72 dB
    External Noise
    Noise Emission / Exterior Noise: B (72 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:02-09-2026
Fully Fitted Price
£5503
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CW-25

145/80R12 N (86)
5.0/5
(2 reviews)
  • C
    Fuel Efficiency
    Fuel Efficiency / Rolling Resistance: C

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

  • C
    Wet Grip
    Wet Grip / Braking Performance: C

    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.

  • B72 dB
    External Noise
    Noise Emission / Exterior Noise: B (72 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:02-09-2026
Fully Fitted Price
£6425
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What Does 145/80 R12 Mean?

145/80 R12 spares are common for older small vehicles and some light trailers, so we stock them on Tyres.co.uk. The numbers are straightforward. 145 is the tyre width in millimetres. 80 is the aspect ratio, so the sidewall is 80% of 145mm, which gives you 116mm. R12 means a radial tyre on a 12-inch rim, giving an overall diameter of 537mm. That 116mm of rubber helps cushion broken road surfaces.

Part of the sizeValueWhat it means
Section width 145 The width of the tyre across the tread, measured in millimetres.
Profile (aspect ratio) 80 Sidewall height as a percentage of the width - here, 80% of 145 mm (about 116 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 116.0 mm (4.57 in)
Overall diameter 537 mm (21.1 in)
Circumference 1,686 mm (66.4 in)
Revolutions 954 per mile · 593 per km
Equivalent sizes
SizeOverall diameter
165/70 R12 536 mm · -0.2%
145/70 R13 533 mm · -0.7%
155/65 R13 532 mm · -1.0%
165/65 R13 545 mm · +1.5%
165/60 R13 528 mm · -1.6%
135/80 R13 546 mm · +1.8%