215/70R15
Overall diameter 682 mm
215/70R15 — 682 mm tall, and what it swaps with
215/70R15 is 215 mm wide with a 70% sidewall on a 15-inch wheel. That sidewall is 150.5 mm, so the tyre stands 682 mm tall and turns 466.7 times per kilometre.
- Section width
- 215 mm
- Aspect ratio
- 70 %
- Wheel size
- 15 in (381 mm)
- Sidewall height
- 150.5 mm
- Overall diameter
- 682 mm (26.85 in)
- Circumference
- 2142.6 mm
- Turns per km
- 466.7
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.
225/50R18682.2 mm · +0.03% you go faster245/35R20679.5 mm · -0.37% you go slower225/55R17679.3 mm · -0.4% you go slower295/30R20685 mm · +0.44% you go faster285/30R20679 mm · -0.44% you go slower225/45R19685.1 mm · +0.45% you go faster245/40R19678.6 mm · -0.5% you go slower215/65R16685.9 mm · +0.57% you go faster245/45R18677.7 mm · -0.63% you go slower255/35R20686.5 mm · +0.66% you go faster255/40R19686.6 mm · +0.67% you go faster255/45R18686.7 mm · +0.69% you go faster
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 215/70R15?
682 mm — the 381 mm wheel plus the 150.5 mm sidewall at top and bottom.
Q. How many turns per kilometre does 215/70R15 make?
Its circumference is 2142.6 mm, so 466.7 turns.
Q. What can I swap it for?
12 sizes stay within 3% of its diameter — the closest is 225/50R18 at 682.2 mm.
Q. Why is the sidewall 150.5 mm?
Because it is 70% of the 215 mm width. The aspect ratio is a proportion of the width, not a length.