245/70R16
Overall diameter 749.4 mm
245/70R16 — 749.4 mm tall, and what it swaps with
245/70R16 is 245 mm wide with a 70% sidewall on a 16-inch wheel. That sidewall is 171.5 mm, so the tyre stands 749.4 mm tall and turns 424.8 times per kilometre.
- Section width
- 245 mm
- Aspect ratio
- 70 %
- Wheel size
- 16 in (406.4 mm)
- Sidewall height
- 171.5 mm
- Overall diameter
- 749.4 mm (29.5 in)
- Circumference
- 2354.3 mm
- Turns per km
- 424.8
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.
245/65R17750.3 mm · +0.12% you go faster245/60R18751.2 mm · +0.24% you go faster265/50R19747.6 mm · -0.24% you go slower275/35R22751.3 mm · +0.25% you go faster245/55R19752.1 mm · +0.36% you go faster265/45R20746.5 mm · -0.39% you go slower245/50R20753 mm · +0.48% you go faster275/40R21753.4 mm · +0.53% you go faster265/40R21745.4 mm · -0.53% you go slower245/45R21753.9 mm · +0.6% you go faster265/35R22744.3 mm · -0.68% you go slower275/45R20755.5 mm · +0.81% you go faster
Same profile, different width
Other sizes for this wheel
16-inch wheels
195/45R16 581.9mm195/50R16 601.4mm195/55R16 620.9mm195/60R16 640.4mm205/45R16 590.9mm205/50R16 611.4mm205/55R16 631.9mm205/60R16 652.4mm205/65R16 672.9mm215/55R16 642.9mm215/60R16 664.4mm215/65R16 685.9mm215/70R16 707.4mm225/50R16 631.4mm225/55R16 653.9mm225/60R16 676.4mm225/65R16 698.9mm225/70R16 721.4mm235/60R16 688.4mm235/70R16 735.4mm245/70R16 749.4mm265/70R16 777.4mm265/75R16 803.9mm
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 245/70R16?
749.4 mm — the 406.4 mm wheel plus the 171.5 mm sidewall at top and bottom.
Q. How many turns per kilometre does 245/70R16 make?
Its circumference is 2354.3 mm, so 424.8 turns.
Q. What can I swap it for?
12 sizes stay within 3% of its diameter — the closest is 245/65R17 at 750.3 mm.
Q. Why is the sidewall 171.5 mm?
Because it is 70% of the 245 mm width. The aspect ratio is a proportion of the width, not a length.