Tyre sizes·195/50R16
195/50R16
Overall diameter 601.4 mm

195/50R16 — 601.4 mm tall, and what it swaps with

195/50R16 is 195 mm wide with a 50% sidewall on a 16-inch wheel. That sidewall is 97.5 mm, so the tyre stands 601.4 mm tall and turns 529.3 times per kilometre.

Section width
195 mm
Aspect ratio
50 %
Wheel size
16 in (406.4 mm)
Sidewall height
97.5 mm
Overall diameter
601.4 mm (23.68 in)
Circumference
1889.4 mm
Turns per km
529.3

Sizes you can swap to

Only sizes whose overall diameter stays within 3% are listed. A different diameter covers a different distance per turn, and that gap becomes speedometer error.

Same profile, different width

Other sizes for this wheel

How the code reads

The 205 is millimetres, the 55 is a percentage of that width, and only the 16 is inches. The R stands for radial construction.

How to read this

  • The first three digits are the width in mm, the middle two are the aspect ratio in percent, the last two the wheel in inches.
  • Sidewall height = width × aspect ÷ 100. For 205/55 that is 112.75 mm.
  • Overall diameter = wheel diameter + twice the sidewall. A 16-inch wheel is 406.4 mm.
  • Once the diameter shifts by more than 3%, the speedometer and odometer drift by the same amount.

Frequently asked questions

Q. What is the overall diameter of 195/50R16?

601.4 mm — the 406.4 mm wheel plus the 97.5 mm sidewall at top and bottom.

Q. How many turns per kilometre does 195/50R16 make?

Its circumference is 1889.4 mm, so 529.3 turns.

Q. What can I swap it for?

12 sizes stay within 3% of its diameter — the closest is 205/60R14 at 601.6 mm.

Q. Why is the sidewall 97.5 mm?

Because it is 50% of the 195 mm width. The aspect ratio is a proportion of the width, not a length.