165/45R15 In Inches – Tire Size & Wheel Fitment Guide


What size tire is 165/45R15 in Inches?

The 165/45R15 tire has an overall diameter of 20.8 inches, a section width of 6.5 inches, and can be mounted on 15 x 5.0-6.0 inches rim. The equivalent tire size in the high flotation system is 20.8x6.5R15.

InchesMillimeters
Tire Diameter20.8529.5
Section Width6.5165
Rim Height15381
Sidewall Height2.974.3
Circumference65.51663.5
tire diameter
6.5"
20.8"
Tire Side
Tire Circumference
65.5"
15"
2.9"
967.5 Revs/Mile

To help you understand, we'll break down each part of the 165/45R15 tire size to know what these numbers represent & how they may affect your tire's performance:


How wide is a 165/45R15 tire?

The 165/45R15 tire has a width of 6.5 inches (165 mm). This is the measurement at its thickest point, the distance between the outer sidewall and the inner sidewall’s widest point, also called as tread width or section width.

tread width
Tread width: 6.5 In.

How tall is a 165/45R15 tire?

The 165/45R15 tire has a height of 20.8 inches (529.5 mm). This is the measurement from the bottom to the highest point at the top of a tire through its exact center when inflated and unloaded.

Tire Diameter
Tire diameter: 20.8 In.

165/45R15 sidewall height

The 165/45R15 has a sidewall height of 2.9 inches (74.3 mm). It’s measured from the rim to the outer edge of the tire's tread, expressed as a percentage of tire width.

sidewall height
Sidewall height: 2.9 In.

What size rim do you need for 165/45R15 tire?

You can mount the 165/45R15 tire on a rim with a height of 15 inches and a width ranging from 5.0-6.0 inches. (Based on recommendations of The Tire and Rim Association (TRA))

Putting very narrow tires on wide rims or vice versa can result in reduced performance of the tire.

Rim Diameter
Rim height: 15 In.
rim width
Rim width: 5.0-6.0 In.

165/45R15 circumference

The 165/45R15 tire has a circumference of 65.5 inches (1663.5 mm), This is the measurement of the distance the tire travels in one revolution.

The tire circumference is important for your vehicle's overall performance, affecting its speedometer acceleration, accuracy and fuel efficiency.

Circumference
Circumference: 65.5 In.

165/45R15 Revolutions

The 165/45R15 performs 967.5 revs/mile. Revolutions per mile indicate the number of times a tire rotates while it covers the distance of one mile.

Revolutions
967.5 revs/mile

Replacement Tire Sizes for 165/45R15

As a rule, you can replace the tire within a 3% difference in tire diameter (height) of the OEM tire size. Here is a list of compatible tire sizes for 165/45R15:

Tire SizeDiameterRim (H x W)
145/65R1421.4″ (+2.8%)14″ x 4.0-5.0″
185/50R1421.3″ (+2.3%)14″ x 5.0-6.5″
205/45R1421.3″ (+2.3%)14″ x 6.5-7.5″
115/70R1521.3″ (+2.3%)15″ x n/a
165/40R1621.2″ (+1.9%)16″ x 5.5-6.5″
165/55R1421.1″ (+1.4%)14″ x 4.5-6.0″
225/40R1421.1″ (+1.4%)14″ x 7.5-9.0″
255/35R1421″ (+1%)14″ x 8.5-10.0″
125/70R1420.9″ (+0.5%)14″ x n/a
175/50R1420.9″ (+0.5%)14″ x 5.0-6.0″
195/45R1420.9″ (+0.5%)14″ x 6.0-7.5″
215/40R1420.8″ (Equal)14″ x 7.0-8.5″
105/70R1520.8″ (Equal)15″ x n/a
155/55R1420.7″ (-0.5%)14″ x 4.5-5.5″
165/50R1420.5″ (-1.5%)14″ x n/a
115/70R1420.3″ (-2.5%)14″ x n/a

More tire sizes for 15" Wheel:

19″ Tire Diameter

20″ Tire Diameter

21″ Tire Diameter


22″ Tire Diameter

23″ Tire Diameter

24″ Tire Diameter


25″ Tire Diameter

26″ Tire Diameter

27″ Tire Diameter


28″ Tire Diameter

29″ Tire Diameter

30″ Tire Diameter

31″ Tire Diameter

32″ Tire Diameter


*Disclaimer: Please note that our tire dimensions & measurements are an approximation number, while the tire manufacturers may have different ways in calculating or rounding numbers. We recommend referring to the vehicle manufacturer's manual or checking with the tire technician to find out the correct tire size for your vehicle.


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