Home33 inch tires in metric

33 inch tire in metric

A 33 inch tire in metric depends on the wheel. The metric sizes closest to 33 in are 285/75R16 (32.83 in) on a 16 in wheel, 255/80R17 (33.06 in) on a 17 in wheel, 275/70R18 (33.16 in) on an 18 in wheel, 275/60R20 (32.99 in) on a 20 in wheel and 275/50R22 (32.83 in) on a 22 in wheel.

By David Owen. Published 3 November 2026.

Sizes are grouped by calculated diameter rounded to the nearest inch, so this page lists every catalogue size from 32.50 in up to just under 33.50 in, plus the flotation sizes whose code says 33.

15 in wheels

Size	Diameter (in)(mm)	Width (in)(mm)	Revs per mileper km
33x12.50R15 nominal	33.00838.2	12.50318	611380

16 in wheels

Size	Diameter (in)(mm)	Width (in)(mm)	Revs per mileper km
305/70R16	32.81833.4	12.01305	615382
285/75R16	32.83833.9	11.22285	614382
295/75R16	33.42848.9	11.61295	603375

Just under the 33-inch class on a 16 in wheel: 235/85R16 at 31.73 in805.9 mm, a 32-inch tire by calculated diameter.

17 in wheels

Size	Diameter (in)(mm)	Width (in)(mm)	Revs per mileper km
285/70R17	32.71830.8	11.22285	617383
33x12.50R17 nominal	33.00838.2	12.50318	611380
255/80R17	33.06839.8	10.04255	610379
295/70R17	33.26844.8	11.61295	606377

Just under the 33-inch class on a 17 in wheel: 275/70R17 at 32.16 in816.8 mm, a 32-inch tire by calculated diameter.

18 in wheels

Size	Diameter (in)(mm)	Width (in)(mm)	Revs per mileper km
285/65R18	32.59827.7	11.22285	619385
265/70R18	32.61828.2	10.43265	619384
235/80R18	32.80833.2	9.25235	615382
33x12.50R18 nominal	33.00838.2	12.50318	611380
275/70R18	33.16842.2	10.83275	608378
325/60R18	33.35847.2	12.80325	605376

Just under the 33-inch class on an 18 in wheel: 305/60R18 at 32.41 in823.2 mm, a 32-inch tire by calculated diameter.

20 in wheels

Size	Diameter (in)(mm)	Width (in)(mm)	Revs per mileper km
265/60R20	32.52826.0	10.43265	620385
295/55R20	32.78832.5	11.61295	615382
275/60R20	32.99838.0	10.83275	611380
33x12.50R20 nominal	33.00838.2	12.50318	611380
305/55R20	33.21843.5	12.01305	607377
285/60R20	33.46850.0	11.22285	603374

Just under the 33-inch class on a 20 in wheel: 285/55R20 at 32.34 in821.5 mm, a 32-inch tire by calculated diameter.

22 in wheels

Size	Diameter (in)(mm)	Width (in)(mm)	Revs per mileper km
305/45R22	32.81833.3	12.01305	615382
275/50R22	32.83833.8	10.83275	614382
33x12.50R22 nominal	33.00838.2	12.50318	611380
285/50R22	33.22843.8	11.22285	607377

Just under the 33-inch class on a 22 in wheel: 285/45R22 at 32.10 in815.3 mm, a 32-inch tire by calculated diameter.

33x12.50R15, 33x12.50R17, 33x12.50R18, 33x12.50R20 and 33x12.50R22 are flotation sizes: the 33 is in the code, and it's nominal.

Flotation sizes state their height and width in inches, and those numbers are nominal: makers aim at them, and real tires of the same size measure a little differently.

These are size-code figures only. Whether a size fits, clears and carries your load depends on your vehicle and the tire, so check with a tire shop.

Searched comparisons with 33-inch sizes

Sources

Kumho Tire USA: Crugen HT51 size and technical data, retrieved 29 October 2026
Kumho Tire USA: Road Venture AT52 size and technical data, retrieved 29 October 2026
Nitto Dura Grappler: sizes and specifications, retrieved 29 October 2026
Nitto Recon Grappler A/T: sizes and specifications, retrieved 29 October 2026
Nitto Terra Grappler G3: sizes and specifications, retrieved 29 October 2026
Nitto Trail Grappler M/T: sizes and specifications, retrieved 29 October 2026
Toyo Tires: Open Country A/T III sizes and specifications (spec-table data the product page loads), retrieved 29 October 2026
Toyo Tires: Open Country A/T III EV sizes and specifications (spec-table data), retrieved 29 October 2026
Toyo Tires: Open Country M/T sizes and specifications (spec-table data), retrieved 29 October 2026
Toyo Tires: Open Country R/T sizes and specifications (spec-table data), retrieved 29 October 2026

Data verified 29 October 2026 against these sources. See the methodology for how disagreements are resolved.