Curious Axle

Tire sizes

What size is a 33-inch tire?

These common sizes all measure between 32.5 and 33.5 inches tall, so they get called 33s. Pick one for its exact dimensions.

SizeHeightWidthWheel
33x10.50R1533.0 in10.5 in15 in
33x12.50R1533.0 in12.5 in15 in
305/70R1632.8 in12.0 in16 in
285/75R1632.8 in11.2 in16 in
255/85R1633.1 in10.0 in16 in
265/75R1732.6 in10.4 in17 in
285/70R1732.7 in11.2 in17 in
33x12.50R1733.0 in12.5 in17 in
255/80R1733.1 in10.0 in17 in
295/70R1733.3 in11.6 in17 in
285/65R1832.6 in11.2 in18 in
265/70R1832.6 in10.4 in18 in
33x12.50R1833.0 in12.5 in18 in
295/65R1833.1 in11.6 in18 in
275/70R1833.2 in10.8 in18 in
325/60R1833.4 in12.8 in18 in
265/60R2032.5 in10.4 in20 in
295/55R2032.8 in11.6 in20 in
275/60R2033.0 in10.8 in20 in
33x12.50R2033.0 in12.5 in20 in
305/55R2033.2 in12.0 in20 in
285/60R2033.5 in11.2 in20 in
305/45R2232.8 in12.0 in22 in
275/50R2232.8 in10.8 in22 in
What 33s do to your speedometer and gearing Full tire size chart

Questions

What size is a 33-inch tire in metric?

Metric sizes that measure between 32.5 and 33.5 inches tall include 305/70R16, 285/75R16, 255/85R16, 265/75R17, 285/70R17, 255/80R17, 295/70R17, 285/65R18, 265/70R18, 295/65R18.

Is a 33-inch tire exactly 33 inches tall?

Not always. '33s' is a class: metric sizes from about 32.5 to 33.5 inches get called 33s, and inch-sized tires often measure a little under their label once mounted.

What gear ratio do I need for 33-inch tires?

From a 31.5-inch stock tire, 3.73 gears need about 3.91 and 4.10 gears about 4.30 to drive the same on 33s, so 3.91 and 4.30 are the nearest common sets. Use the calculator with your exact sizes.

Nominal dimensions. Fitment depends on your vehicle, lift and wheels. Updated 2026-11-14.