235/60R15 vs 205/75R14 tire size comparison

Change either size and everything below updates.

Start from your car make, model, year
Current tire size
/R
xR
New tire size
/R
xR

Width in mm · aspect = sidewall height as a % of width · rim in inches

Flotation (LT) sizes, all in inches: overall diameter × section width, then rim

Well within tolerance

+0.02% diameter

The overall diameter changes by less than 1.5%, so speedometer error is negligible and ride height barely moves.

  • Needs 14″ wheels: this tire does not fit your 15″ rims.
  • 30 mm narrower: check the tire is approved for your rim width.

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Measurement235/60R15205/75R14Diff%
Overall diameter26.10″663 mm26.11″663 mm+0.00″+0.0%
Section width235.0 mm205.0 mm−30.0 mm−12.8%
Sidewall height141.0 mm153.8 mm+12.8 mm+9.0%
Rim diameter15″14″−1″−6.7%
Circumference82.00″2083 mm82.02″2083 mm+0.01″+0.0%
Revolutions per mileturns per distance; drives the odometer773480 /km773480 /km−0−0.0%
Ride height change——+0.00″ +0.1 mm

Speedometer reading

Speedo shows
60mph
97 km/h
Actual speed
60.0mph
97 km/h

Overlay

235/60R15205/75R14

How to use the tire size calculator

Put your current tire size — width, aspect ratio and rim diameter — into the first form, then your desired size into the second. You’ll get the difference between the new and the old size, plus the speedometer reading difference and your actual speed on the new set. Both metric and flotation (LT inch) sizes are supported.

The calculator helps you decide whether a set of tires and wheels will fit your car. To compare tires by brand and model instead, use our tire comparison tool; to look up factory sizes, browse by car make.

Reading a tire size

225/45R17
225
Section width in millimetres
45
Aspect ratio — sidewall height as a % of width
R
Radial construction
17
Rim diameter in inches

Full guide to the tire sidewall →

Sizes often compared with 235/60R15