195/70R13 vs 185/70R13 tire size comparison
Change either size and everything below updates.
Start from your car make, model, year
That size does not exist: the overall diameter must be larger than the rim. The results below still show the last valid pair.
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
Within the usual 3% rule
−2.32% diameterMost fitment guides accept up to 3%. Check clearance at full lock and full suspension compression before committing.
- 10 mm narrower: check the tire is approved for your rim width.
Check what fits your car Factory tire sizes for every make, model and year.
Tires in 185/70R13
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| Measurement | 195/70R13 | 185/70R13 | Diff | % |
|---|---|---|---|---|
| Overall diameter | 23.75″603 mm | 23.20″589 mm | −0.55″ | −2.3% |
| Section width | 195.0 mm | 185.0 mm | −10.0 mm | −5.1% |
| Sidewall height | 136.5 mm | 129.5 mm | −7.0 mm | −5.1% |
| Rim diameter | 13″ | 13″ | 0″ | 0.0% |
| Circumference | 74.61″1895 mm | 72.88″1851 mm | −1.73″ | −2.3% |
| Revolutions per mileturns per distance; drives the odometer | 849528 /km | 869540 /km | +20 | +2.4% |
| Ride height change | — | — | −0.28″ −7.0 mm | |
Speedometer reading
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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
- Section width in millimetres
- 45
- Aspect ratio — sidewall height as a % of width
- R
- Radial construction
- 17
- Rim diameter in inches