225/30R19 in inches

225/30R19 — what does it mean?

• 225 stands for tread width in millimeters
• 30 is an aspect ration between the tread width and the sidewall in percents
• R means that the tire has a radial construction
• 19 is a wheel diameter (or rim) in inches

How to convert 225 30R19 to inches?

First of all, we need to divide 225 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 8.9″. Then, 30% of the 8.9″ will result in 2.7″ sidewall.

To get the total height or tire diameter, we need to sum the 19″ rim diameter with two of the sidewall heights. It will result in a 24.4″ total tire diameter (or height).

For your convenience, below is a table for 225/30R19 conversion to inches:

Alternatives to a 225/30R19 tire

If you're looking to upsize your 225 30R19 tires, try to stay within 3% deviation of an overall diameter for safety reasons.