# 155/60R18 in inches

## How tall is a 155 60R18 tire?

When converted to inches, the equivalent of a 155/60R18 tire size is 25.4x6.1R18. It means that:

• height overall (or diameter) is 25.4 inches
• tread width is 6.1 inches
• wheel diameter is 18 inches

## 155/60R18 tire size in inches

Height / overall diameter
25.4 inches
6.1 inches
Sidewall
3.7 inches
Wheel diameter
18 inches
Circumference
79.8 inches
Revolutions
795 per mile

## 155/60R18 — what does it mean?

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

## How to convert 155 60R18 to inches?

First of all, we need to divide 155 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 6.1″. Then, 60% of the 6.1″ will result in 3.7″ sidewall.

To get the total height or tire diameter, we need to sum the 18″ rim diameter with two of the sidewall heights. It will result in a 25.4″ total tire diameter (or height).

For your convenience, below is a table for 155/60R18 conversion to inches:

Inches Metric
Overall diameter (height) 25.4″ 645 mm
Wheel diameter 18″ 645 mm
Sidewall height 3.7″ 93 mm
Circumference 79.8″ 2025 mm
Revolutions 795 / ml 494 / km

## Alternatives to a 155/60R18 tire

If you're looking to upsize your 155 60R18 tires, try to stay within 3% deviation of an overall diameter for safety reasons.

Tire Tire diameter Width Wheel Size
245/40R18 25.8″ 0.38% 9.6″ 18″
125/70R18 25″ -0.39% 4.9″ 18″
135/70R18 25.4″ 0% 5.3″ 18″
145/65R18 25.4″ 0% 5.7″ 18″
145/70R18 26″ 0.57% 5.7″ 18″
185/55R18 26″ 0.57% 7.3″ 18″
205/45R18 25.2″ -0.19% 8.1″ 18″
205/50R18 26.2″ 0.76% 8.1″ 18″
215/40R18 24.8″ -0.59% 8.5″ 18″
215/45R18 25.6″ 0.19% 8.5″ 18″