TireSizeCalc

Tire size chart

53 sizes with their nominal height and width in inches, grouped by rim diameter. Select a size for the full breakdown.

15-inch rim 4 sizes

225/75R1528.29″ × 8.86″235/75R1528.88″ × 9.25″265/75R1530.65″ × 10.43″33x12.50R1532.52″ × 12.52″

16-inch rim 11 sizes

225/75R1629.29″ × 8.86″255/70R1630.06″ × 10.04″245/75R1630.47″ × 9.65″265/70R1630.61″ × 10.43″265/75R1631.65″ × 10.43″235/85R1631.73″ × 9.25″305/70R1632.81″ × 12.01″285/75R1632.83″ × 11.22″255/85R1633.07″ × 10.04″295/75R1633.42″ × 11.61″315/75R1634.60″ × 12.40″

17-inch rim 16 sizes

235/65R1729.03″ × 9.25″245/65R1729.54″ × 9.65″245/70R1730.50″ × 9.65″265/65R1730.56″ × 10.43″255/70R1731.06″ × 10.04″245/75R1731.47″ × 9.65″265/70R1731.61″ × 10.43″255/75R1732.06″ × 10.04″275/70R1732.16″ × 10.83″285/70R1732.71″ × 11.22″33x12.50R1733.00″ × 12.50″295/70R1733.26″ × 11.61″305/70R1733.81″ × 12.01″285/75R1733.83″ × 11.22″315/70R1734.36″ × 12.40″295/75R1734.42″ × 11.61″

18-inch rim 10 sizes

265/60R1830.52″ × 10.43″265/65R1831.56″ × 10.43″275/65R1832.07″ × 10.83″285/65R1832.59″ × 11.22″265/70R1832.61″ × 10.43″275/70R1833.16″ × 10.83″285/70R1833.71″ × 11.22″295/70R1834.26″ × 11.61″325/65R1834.63″ × 12.80″285/75R1834.83″ × 11.22″

20-inch rim 12 sizes

265/50R2030.43″ × 10.43″275/55R2031.91″ × 10.83″285/55R2032.34″ × 11.22″265/60R2032.52″ × 10.43″295/55R2032.78″ × 11.61″275/60R2032.99″ × 10.83″305/55R2033.21″ × 12.01″285/60R2033.46″ × 11.22″295/60R2033.94″ × 11.61″275/65R2034.07″ × 10.83″285/65R2034.59″ × 11.22″295/65R2035.10″ × 11.61″

Height × width, nominal, from the official sizing formula (sources below).

Sizes by width

Printed from https://tiresizecalc.net/tire-size-chart/. Figures as published on 2026-11-01. The sources are listed below.

Sources

  1. UN Regulation No. 30 - Uniform provisions concerning the approval of pneumatic tyres for motor vehicles and their trailers (Revision 3). United Nations Economic Commission for Europe (UNECE). E/ECE/324 E/ECE/TRANS/505 Rev.1/Add.29/Rev.3. 2007-03-29. Para 2.15 and 6.1.2.1: aspect ratio and outer diameter, D = d + 2H. Retrieved 2026-11-01.
  2. UN Regulation No. 54 - Uniform provisions concerning the approval of pneumatic tyres for commercial vehicles and their trailers (Revision 2). United Nations Economic Commission for Europe (UNECE). E/ECE/324 E/ECE/TRANS/505 Rev.1/Add.53/Rev.2. 2004-04-16. Para 6.1.2.1: the same formula for light truck tires. Retrieved 2026-11-01.
  3. UN Regulation No. 30 - Uniform provisions concerning the approval of pneumatic tyres for motor vehicles and their trailers (Revision 3). United Nations Economic Commission for Europe (UNECE). E/ECE/324 E/ECE/TRANS/505 Rev.1/Add.29/Rev.3. 2007-03-29. Para 6.1.5: allowed outer diameter, Dmin = d + 2H x 0.97, Dmax = d + 2H x 1.04. Retrieved 2026-11-01.
  4. UN Regulation No. 54 - Uniform provisions concerning the approval of pneumatic tyres for commercial vehicles and their trailers (Revision 2). United Nations Economic Commission for Europe (UNECE). E/ECE/324 E/ECE/TRANS/505 Rev.1/Add.53/Rev.2. 2004-04-16. Annex 5 Part II Table B: design outer diameter and section width of 33x12.50R15LT. Retrieved 2026-11-01.
  5. UN Regulation No. 54 - Uniform provisions concerning the approval of pneumatic tyres for commercial vehicles and their trailers (Revision 2). United Nations Economic Commission for Europe (UNECE). E/ECE/324 E/ECE/TRANS/505 Rev.1/Add.53/Rev.2. 2004-04-16. Para 6.1.5.1, 6.1.5.3.1 and Table B note 2: allowed outer diameter for table sizes. Retrieved 2026-11-01.
  6. Computed by tiresizecalc.net from the cited formula. Sri Murugan Systems. Not in UN R54 Annex 5 Table B: diameter and width of 33x12.50R17 are the numbers in the size. Retrieved 2026-11-01.
  7. Computed by tiresizecalc.net from the cited formula. Sri Murugan Systems. Circumference = pi x diameter; revolutions per mile = 63,360 / circumference; 1 in = 25.4 mm exactly. Retrieved 2026-11-01.

Last reviewed 2026-11-01. The full source list, with dates and file checksums, is in How the numbers are calculated. To report an error, email contactus@tiresizecalc.net.