what size is a 33 inch tire
A “33 inch tire” means a tire with an overall diameter of about 33 inches, but the exact size depends on the specific width and wheel size it’s built for.
Quick Scoop
- Overall diameter: about 33 inches from the ground to the top of the tire when mounted and inflated.
- Common “33-inch” formats in off‑road style sizing:
- 33x10.50R15 → ~33" tall, ~10.5" wide, for a 15" wheel.
* 33x12.50R15 → ~33" tall, ~12.5" wide, for a 15" wheel.
* 33x12.50R20 → ~33" tall, ~12.5" wide, for a 20" wheel.
- In metric sizing, several sizes are roughly equivalent to 33s, for example:
- 285/70R17 ≈ 32.7"–33" diameter, about 11.2" wide.
* 315/65R17 and 305/55R20 are also commonly listed as 33" equivalents.
How to think about “33 inch”
When people ask “what size is a 33 inch tire,” they’re usually trying to match:
- A metric size (like 285/70R17) to the “33-inch” nickname.
- Or find the width and wheel size behind labels like 33x12.50R20.
A simple example:
A 285/70R17 tire is often marketed as a 33" tire because its calculated diameter comes out just under 33 inches, even though the exact number can vary slightly by brand and tread.
Mini FAQ
- Is every 33-inch tire the same width?
No. You can have 33x10.50, 33x11.50, 33x12.50, 33x13.50, etc.—all about 33" tall but with different section widths.
- Why do some “33s” measure like 32.8" or 32.7"?
The “33” is a rounded, nominal size; real diameter varies with brand, tread pattern, and inflation, so many “33s” are just under 33".
- How do I find the metric size that matches my 33s?
Look up a tire size converter or chart; it will list metric sizes whose calculated diameter is around 33 inches (for example, 285/70R17, 315/65R17, 305/55R20).
TL;DR: A 33 inch tire is any tire with an overall diameter of roughly 33 inches, commonly labeled in inch format as 33x10.50R15 or 33x12.50R20, or in metric format by sizes like 285/70R17 that work out to about 33 inches tall.
Information gathered from public forums or data available on the internet and portrayed here.