245/45R20 In Inches – Tire Size & Rim Fitment Guide


What size tire is 245/45R20 in Inches?

The 245/45R20 tire has an overall diameter of 28.7 inches, a section width of 9.6 inches, and can be mounted on 20 x 7.5-9.0 inches rim. The equivalent tire size in the high flotation system is 28.7x9.6R20.

InchesMillimeters
Tire Diameter28.7728.5
Section Width9.6245
Rim Height20508
Sidewall Height4.3110.3
Circumference90.12288.7
tire diameter
9.6"
28.7"
Tire Side
Tire Circumference
90.1"
20"
4.3"
703.2 Revs/Mile

To make it clear, we'll break down each part of the 245/45R20 tire size to know what these numbers represent & how they may affect your vehicle tire's performance:



How tall is a 245/45R20 tire?

A 245/45R20 tire has a height of 28.7 inches (728.5 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 no load.

Tire Diameter
Tire diameter: 28.7 In.


How wide is a 245/45R20 tire?

The 245/45R20 has a width of 9.6 inches (245 mm). This is the tire measurement at its thickest point, the distance between the inner sidewall’s and the outer sidewall’s widest point, also known as section width or tread width.

tread width
Tread width: 9.6 In.


245/45R20 sidewall height

The sidewall height of a 245/45R20 is 4.3 inches (110.3 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: 4.3 In.


What size rim do I need for 245/45R20 tire?

You can put on a rim with a height of 20 inches and a rim width ranging from 7.5-9.0 inches for a 245/45R20 tire. (Based on recommendations of The Tire and Rim Association (TRA))

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

Rim Diameter
Rim height: 20 In.
rim width
Rim width: 7.5-9.0 In.


245/45R20 circumference

The 245/45R20 tire has a circumference of 90.1 inches (2288.7 mm), This is the measurement of the distance the tire covers in one full rotation.

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

Circumference
Circumference: 90.1 In.


245/45R20 Revolutions

The 245/45R20 performs 703.2 revs/mile. Revolutions per mile indicate the number of times a tire rotates while it covers the distance of one mile.

Revolutions
703.2 revs/mile


Alternative Tire Sizes for 245/45R20

As a rule, you can replace the tire within a 3% difference in tire diameter (height) of the OEM tire size. Here is the full list of replacement sizes compatible with 245/45R20:

Tire SizeDiameterRim (H x W)
295/45R1929.5″ (+2.7%)19″ x 9.5-11.0″
265/50R1929.4″ (+2.4%)19″ x 7.5-9.5″
265/45R2029.4″ (+2.4%)20″ x 8.5-10.0″
305/35R2129.4″ (+2.4%)21″ x 10.0-12.0″
315/30R2229.4″ (+2.4%)22″ x 10.5-11.5″
235/50R2029.3″ (+2%)20″ x 6.5-8.5″
295/40R2029.3″ (+2%)20″ x 10.0-11.5″
235/45R2129.3″ (+2%)21″ x 7.5-9.0″
265/40R2129.3″ (+2%)21″ x 9.0-10.5″
265/35R2229.3″ (+2%)22″ x 9.0-10.5″
235/55R1929.2″ (+1.7%)19″ x 6.5-8.5″
305/30R2229.2″ (+1.7%)22″ x 10.5-11.5″
315/25R2329.2″ (+1.7%)23″ x 11.0-12.0″
285/45R1929.1″ (+1.4%)19″ x 9.0-10.5″
145/80R2029.1″ (+1.4%)20″ x n/a
295/35R2129.1″ (+1.4%)21″ x 10.0-11.5″
255/50R1929″ (+1%)19″ x 7.0-9.0″
255/45R2029″ (+1%)20″ x 8.0-9.5″
285/40R2029″ (+1%)20″ x 9.5-11.0″
325/35R2029″ (+1%)20″ x 11.0-13.0″
255/40R2129″ (+1%)21″ x 8.5-10.0″
255/35R2229″ (+1%)22″ x 8.5-10.0″
295/30R2229″ (+1%)22″ x 10.0-11.0″
305/25R2329″ (+1%)23″ x 10.5-11.5″
315/40R1928.9″ (+0.7%)19″ x 11.0-12.0″
285/35R2128.9″ (+0.7%)21″ x 9.5-11.0″
155/80R1928.8″ (+0.3%)19″ x n/a
245/35R2228.8″ (+0.3%)22″ x 8.0-9.5″
225/55R1928.7″ (Equal)19″ x 6.0-8.0″
275/45R1928.7″ (Equal)19″ x 8.5-10.5″
275/40R2028.7″ (Equal)20″ x 9.0-11.0″
315/35R2028.7″ (Equal)20″ x 10.5-12.5″
245/40R2128.7″ (Equal)21″ x 8.0-9.5″
325/30R2128.7″ (Equal)21″ x 11.0-12.0″
285/30R2228.7″ (Equal)22″ x 9.5-10.5″
245/50R1928.6″ (-0.3%)19″ x 7.0-8.5″
275/35R2128.6″ (-0.3%)21″ x 9.0-11.0″
335/25R2228.6″ (-0.3%)22″ x 11.5-12.5″
345/35R1928.5″ (-0.7%)19″ x 11.5-13.5″
275/30R2228.5″ (-0.7%)22″ x 9.0-10.0″
265/45R1928.4″ (-1.1%)19″ x 8.5-10.0″
305/35R2028.4″ (-1.1%)20″ x 10.0-12.0″
315/30R2128.4″ (-1.1%)21″ x 10.5-11.5″
235/50R1928.3″ (-1.4%)19″ x 6.5-8.5″
295/40R1928.3″ (-1.4%)19″ x 10.0-11.5″
235/45R2028.3″ (-1.4%)20″ x 7.5-9.0″
265/40R2028.3″ (-1.4%)20″ x 9.0-10.5″
265/35R2128.3″ (-1.4%)21″ x 9.0-10.5″
265/30R2228.3″ (-1.4%)22″ x 9.0-10.0″
305/30R2128.2″ (-1.8%)21″ x 10.5-11.5″
315/25R2228.2″ (-1.8%)22″ x 11.0-12.0″
265/25R2328.2″ (-1.8%)23″ x 9.5-10.0″
145/80R1928.1″ (-2.1%)19″ x n/a
295/35R2028.1″ (-2.1%)20″ x 10.0-11.5″
345/30R2028.1″ (-2.1%)20″ x 12.0-13.0″
255/45R1928″ (-2.5%)19″ x 8.0-9.5″
285/40R1928″ (-2.5%)19″ x 9.5-11.0″
225/45R2028″ (-2.5%)20″ x 8.0-9.5″
255/40R2028″ (-2.5%)20″ x 8.5-10.0″
255/35R2128″ (-2.5%)21″ x 8.5-10.0″
295/30R2128″ (-2.5%)21″ x 10.0-11.0″
355/25R2128″ (-2.5%)21″ x 12.5-13.5″
255/30R2228″ (-2.5%)22″ x 8.5-9.5″
305/25R2228″ (-2.5%)22″ x 10.5-11.5″
155/65R2027.9″ (-2.9%)20″ x n/a
285/35R2027.9″ (-2.9%)20″ x 9.5-11.0″
335/30R2027.9″ (-2.9%)20″ x 11.5-12.5″

More tire sizes for 20" Wheel:

25″ Tire Diameter

26″ Tire Diameter

27″ Tire Diameter


28″ Tire Diameter

29″ Tire Diameter

30″ Tire Diameter


31″ Tire Diameter

32″ Tire Diameter

33″ Tire Diameter


34″ Tire Diameter

35″ Tire Diameter

36″ Tire Diameter

37″ Tire Diameter

39″ 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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