Tire Size 315/30r20 in inches

The tire size 315/30R20 is equivalent to 27.4×12.4R20 in inches and has a diameter of 27.4 inches, a section width of 12.4 inches, a wheel diameter of 20 inches, and is approved to be mounted on 10.5 – 11.5 inches wide wheels. This tire size is widely preferred for its excellent performance capabilities and dynamic fitment range.

315/30r20 in inches

Gain a comprehensive understanding of inches and millimeters with the help of this Table chart.

Feature Inches Metric
Tire Diameter 27.4 697
Section Width 12.4 315
Rim Height 20 508
Sidewall Height 3.7 94.5
Circumference 86.2 2189.7
Revolutions 456 per km 733 per mile
Rim Width Range 10.5-11.5 266.7 – 292.1

How Tall Is A 315/30R20 Tire?

The Tire Height of the 315/30R20 tire size is 27.4 inches or 697 millimeters. This overall diameter refers to the total height of the tire when properly inflated and not under load. The tire’s height can impact factors such as ride comfort, fuel economy, and capacity to handle heavy loads.

What Is the 315/30R20 Width In Inches?

The tread width of the 315/30R20 tire size is approximately 12.4 inches, equivalent to 315 millimeters. The width is the distance from one side of the tire’s tread to the other. A wider tread width often means enhanced grip and handling, especially in wet conditions or at high speeds.

What Is the 315/30R20 Sidewall Height?

The sidewall height of the 315/30R20 tire size is about 3.7 inches, which translates to 94.5 millimeters. The sidewall height, or aspect ratio, is a percentage of the tire’s width; in this case, it is 30% of 315mm. The sidewall height can affect ride quality, with shorter sidewalls typically providing a stiffer but more responsive ride.

What Is the 315/30R20 Tire Circumference?

The circumference of the 315/30R20 tire size is approximately 86.2 inches or 2189.7 millimeters. The circumference, or the distance around the tire, is crucial in determining the tire’s revolutions per mile and impacts factors like speedometer accuracy.

What Is the 315/30R20 Revolutions Per Mile?

For the 315/30R20 tire size, there are about 733 revolutions per mile. This measure indicates how many times the tire will rotate in one mile. Lower revolutions per mile mean a larger circumference and could impact speedometer readings and fuel efficiency.

What Is the 315/30R20 Rims Size?

The 315/30R20 tire size, the rim diameter is 20 inches or 508 millimeters. This tire size is approved to be mounted on rims with a width ranging between 10.5 – 11.5 inches, which is equivalent to 266.7 – 292.1 millimeters.

Fitment Guide
This table will guide you on which vehicle the 315/30R20 tire size fits. Various high-performance cars and luxury SUVs, especially from brands such as Ferrari, Ford, McLaren, Mercedes-Benz, and Porsche, typically use these tires. Refer to your vehicle’s manual or consult a tire expert for specific fitment information.

Brand Name Model
Ferrari SF90 Spider [2020-2022], SF90 Stradale [2019-2022]
Ford Mustang [2020-2023], Mustang Shelby GT500 [2020-2023]
McLaren P1 [2013-2016], Senna [2018-2021]
Mercedes-Benz AMG GT 4 [2018-2023]
Porsche 911 [2014-2019]

Replacement Tire Size
Replacement tires have to be within 3% of the diameter of the original tire size to ensure safety and compatibility. Therefore, if you’re considering replacing your 315/30R20 tire size, make sure the diameter of the new tire is within 0.822 inches or 20.9 mm.

Tire Size Overall Diameter Difference
285/30R20 26.8″ (680 mm) -2.6%
345/25R20 26.8″ (680 mm) -2.6%
245/35R20 26.8″ (680 mm) -2.6%
145/60R20 26.9″ (682 mm) -2.3%
295/30R20 27.0″ (686 mm) -1.7%
255/35R20 27.0″ (686 mm) -1.7%
225/40R20 27.1″ (688 mm) -1.4%
265/25R22 27.2″ (691 mm) -1.0%
305/30R20 27.2″ (692 mm) -0.9%
265/35R20 27.3″ (694 mm) -0.6%
155/60R20 27.3″ (694 mm) -0.6%
235/40R20 27.4″ (696 mm) -0.3%
145/65R20 27.4″ (696 mm) -0.3%
175/55R20 27.6″ (700 mm) 0.3%
275/35R20 27.6″ (700 mm) 0.3%
215/45R20 27.6″ (702 mm) 0.6%
245/40R20 27.7″ (704 mm) 0.9%
325/30R20 27.7″ (704 mm) 0.9%
195/50R20 27.7″ (704 mm) 0.9%
165/60R20 27.8″ (706 mm) 1.1%
285/35R20 27.9″ (708 mm) 1.4%
335/30R20 28.0″ (710 mm) 1.7%
225/45R20 28.0″ (710 mm) 1.7%
155/65R20 28.0″ (710 mm) 1.7%
255/40R20 28.0″ (712 mm) 2.0%
295/35R20 28.1″ (714 mm) 2.3%
345/30R20 28.2″ (716 mm) 2.6%

Our Observation
The 315/30R20 tire size, with its wide tread width and relatively low aspect ratio, is ideal for drivers looking for superior handling and grip, especially at high speeds or during cornering. However, the reduced sidewall height might contribute to a stiffer ride, which might need to be more comfortable on uneven surfaces.

Additionally, its large diameter might require careful consideration for fitment. Nevertheless, this tire size is a popular choice among performance vehicles and luxury cars, balancing performance, aesthetics, and handling characteristics.

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