Custom Offsets Metric to Imperial Tire Size Converter: Millimeters to Inches
Looking to buy new tires but you're not sure how the tire sizes change from metric to standard? Use this calculator to make sure you're getting the size you need!
In the world of trucks and off-roading, we speak two languages: Metric and Imperial. You might walk into a shop asking for "33s" or "35s" (Imperial/Standard), but the manufacturer specs on the tire sidewall often read something like "285/75R16" (Metric).
Trying to translate these in your head is a nightmare. Metric sizing is calculated using section width in millimeters and sidewall height as a percentage of that width. Imperial sizing—often called "Flotation" sizing—is straightforward: Height x Width x Wheel Size. To get the exact look you want, you need to know how these two systems translate.
The Custom Offsets Metric to Imperial Tire Converter bridges the gap between "Euro-style" specs and American off-road standards. This tool is essential for enthusiasts who want to dial in specific ground clearance and sidewall height.
For example, a common tire size like 285/75R16 isn't just a random string of numbers; our calculator will show you that it converts roughly to a 33x11.2 inch tire. Knowing this helps you source the right tires for your lift kit, as many suspension manufacturers list maximum tire clearance in inches (e.g., "Fits up to 35-inch tires").
Don't let the math scare you away from the perfect set of tires. Input your metric numbers, get the standard conversion, and shop with confidence knowing exactly how much rubber is hitting the road.