What is the diameter of a 275/30R20 tire?

A 275/30R20 tire has an overall diameter of 26.5 inches (673.1mm).

How many revolutions per mile does a 275/30R20 tire make?

A 275/30R20 tire makes approximately 761 revolutions per mile.

What rim width is recommended for 275/30R20 tires?

The recommended wheel rim width for a 275/30R20 tire is 6.9" - 9.6".

275/30R20

Standard Metric

Factory Specs, Physical Dimensions & Compatible Vehicle Applications

Factory Spec Overview

The 275/30R20 tire size features an overall diameter of 26.5 inches, a section width of 10.8 inches (275mm), and rotates 761 times per mile. It is a standard factory tire fitment on 74+ vehicle models including Audi RS 5, Audi RS 5 Sportback.

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Physical Dimensions & Specs

Overall Diameter

26.5"

673.1 mm

Section Width

275 mm

10.83" wide

Sidewall Height

3.25"

82.5 mm (30% aspect)

Revolutions / Mile

761

Circumference: 83.24"

Rim Diameter

20"

Wheel size

Recommended Rim Width

6.9" - 9.6"

Optimal rim width range

Where to Buy & Install 275/30R20 Tires

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Speedometer & Alternate Size Calculator

Testing an alternate size for your vehicle? Compare 275/30R20 against any proposed tire size below:

Popular Comparisons:

Tire 1 (Stock / Base)275/30R20

Section Width (mm)

Aspect Ratio (%)

Rim Diameter (in)

Wheel Width (in)

Offset ET (mm)

Overall Height:26.5"

Sidewall:3.2"

Revs/Mile:761

Tire 2 (New / Compare)245/60R18

Section Width (mm)

Aspect Ratio (%)

Rim Diameter (in)

Wheel Width (in)

Offset ET (mm)

Overall Height:29.6"

Sidewall:5.8"

Revs/Mile:682

Visual Tire & Wheel Comparison

Speedometer Variance

+11.6%At 60 mph reading, actual speed is 67.0 mph

Indicated	Actual Speed	Diff
20 mph	22.3 mph	+2.3 mph
30 mph	33.5 mph	+3.5 mph
45 mph	50.2 mph	+5.2 mph
60 mph	67.0 mph	+7.0 mph
75 mph	83.7 mph	+8.7 mph
90 mph	100.5 mph	+10.5 mph

Fender & Suspension Clearance

Fitment Status: MODERATE RISK

Flush fitment. Extends 17.7mm outwards. Check wheel arch clearance under full suspension compression.

Inner Strut Space:7.7mm LESS clearance

Outer Fender Push:Extends 17.7mm further out

Ride Height Delta:+1.54" ground clearance

Vehicles That Fit 275/30R20 (74+ Models)

Factory standard and optional vehicle fitments utilizing 275/30R20 tires:

Year	Make & Model	Trim / Variant	Lookup Specs
2021	Audi RS 5	RS 5	View 2021 RS 5 ›
2021	Audi RS 5 Sportback	RS 5 Sportback	View 2021 RS 5 Sportback ›
2023	Audi RS 5	RS 5	View 2023 RS 5 ›
2023	Audi RS 5 Sportback	RS 5 Sportback	View 2023 RS 5 Sportback ›
2024	Audi RS 5	RS 5	View 2024 RS 5 ›
2024	Audi RS 5 Sportback	RS 5 Sportback	View 2024 RS 5 Sportback ›
2025	Audi RS 5 Sportback	RS 5 Sportback	View 2025 RS 5 Sportback ›
2018	BMW M550i xDrive	M550i xDrive	View 2018 M550i xDrive ›
2019	BMW M850i xDrive	2D Convertible	View 2019 M850i xDrive ›
2019	BMW M850i xDrive	2D Coupe	View 2019 M850i xDrive ›
2019	BMW M550i xDrive	M550i xDrive	View 2019 M550i xDrive ›
2020	BMW 840i	2D Convertible	View 2020 840i ›
2020	BMW 840i	2D Coupe	View 2020 840i ›
2020	BMW 840i xDrive	2D Convertible	View 2020 840i xDrive ›
2020	BMW 840i xDrive	2D Coupe	View 2020 840i xDrive ›
2020	BMW M850i xDrive	2D Convertible	View 2020 M850i xDrive ›
2020	BMW M850i xDrive	2D Coupe	View 2020 M850i xDrive ›
2020	BMW 840i Gran Coupe	840i Gran Coupe	View 2020 840i Gran Coupe ›
2020	BMW 840i Gran Coupe xDrive	840i Gran Coupe xDrive	View 2020 840i Gran Coupe xDrive ›
2020	BMW M550i xDrive	M550i xDrive	View 2020 M550i xDrive ›
2020	BMW M850i Gran Coupe xDrive	M850i Gran Coupe xDrive	View 2020 M850i Gran Coupe xDrive ›
2021	BMW 840i	2D Coupe	View 2021 840i ›
2021	BMW 840i xDrive	2D Convertible	View 2021 840i xDrive ›
2021	BMW 840i xDrive	2D Coupe	View 2021 840i xDrive ›
2021	BMW 840i	2D Convertible	View 2021 840i ›
2021	BMW M850i xDrive	2D Convertible	View 2021 M850i xDrive ›
2021	BMW M850i xDrive	2D Coupe	View 2021 M850i xDrive ›
2021	BMW 840i Gran Coupe	840i Gran Coupe	View 2021 840i Gran Coupe ›
2021	BMW 840i Gran Coupe xDrive	840i Gran Coupe xDrive	View 2021 840i Gran Coupe xDrive ›
2021	BMW M850i Gran Coupe xDrive	M850i Gran Coupe xDrive	View 2021 M850i Gran Coupe xDrive ›
2022	BMW 840i	2D Convertible	View 2022 840i ›
2022	BMW 840i	2D Coupe	View 2022 840i ›
2022	BMW 840i xDrive	2D Convertible	View 2022 840i xDrive ›
2022	BMW 840i xDrive	2D Coupe	View 2022 840i xDrive ›
2022	BMW M850i xDrive	2D Convertible	View 2022 M850i xDrive ›
2022	BMW M850i xDrive	2D Coupe	View 2022 M850i xDrive ›
2022	BMW 840i Gran Coupe	840i Gran Coupe	View 2022 840i Gran Coupe ›
2022	BMW 840i Gran Coupe xDrive	840i Gran Coupe xDrive	View 2022 840i Gran Coupe xDrive ›
2022	BMW M850i Gran Coupe xDrive	M850i Gran Coupe xDrive	View 2022 M850i Gran Coupe xDrive ›
2023	BMW 840i	2D Convertible	View 2023 840i ›
2023	BMW 840i	2D Coupe	View 2023 840i ›
2023	BMW 840i xDrive	2D Convertible	View 2023 840i xDrive ›
2023	BMW 840i xDrive	2D Coupe	View 2023 840i xDrive ›
2023	BMW M850i xDrive	2D Convertible	View 2023 M850i xDrive ›
2023	BMW M850i xDrive	2D Coupe	View 2023 M850i xDrive ›
2023	BMW 840i Gran Coupe	840i Gran Coupe	View 2023 840i Gran Coupe ›
2023	BMW 840i Gran Coupe xDrive	840i Gran Coupe xDrive	View 2023 840i Gran Coupe xDrive ›
2023	BMW M850i Gran Coupe xDrive	M850i Gran Coupe xDrive	View 2023 M850i Gran Coupe xDrive ›
2024	BMW M850i xDrive	2D Convertible	View 2024 M850i xDrive ›
2024	BMW M850i xDrive	2D Coupe	View 2024 M850i xDrive ›
2024	BMW 840i Gran Coupe	840i Gran Coupe	View 2024 840i Gran Coupe ›
2024	BMW 840i Gran Coupe xDrive	840i Gran Coupe xDrive	View 2024 840i Gran Coupe xDrive ›
2024	BMW M850i Gran Coupe xDrive	M850i Gran Coupe xDrive	View 2024 M850i Gran Coupe xDrive ›
2025	BMW M850i xDrive	2D Convertible	View 2025 M850i xDrive ›
2025	BMW M850i xDrive	2D Coupe	View 2025 M850i xDrive ›
2025	BMW M850i Gran Coupe xDrive	M850i Gran Coupe xDrive	View 2025 M850i Gran Coupe xDrive ›
2023	Chevrolet Corvette	Z06, 2D Convertible	View 2023 Corvette ›
2024	Chevrolet Corvette	E-Ray, 2D Convertible	View 2024 Corvette ›
2024	Chevrolet Corvette	E-Ray, 2D Coupe	View 2024 Corvette ›
2024	Chevrolet Corvette	Z06, 2D Convertible	View 2024 Corvette ›
2024	Chevrolet Corvette	Z06, 2D Coupe	View 2024 Corvette ›
2025	Chevrolet Corvette	Z06, 2D Convertible	View 2025 Corvette ›
2025	Chevrolet Corvette	E-Ray, 2D Coupe	View 2025 Corvette ›
2025	Chevrolet Corvette	ZR1, 2D Convertible	View 2025 Corvette ›
2025	Chevrolet Corvette	Z06, 2D Coupe	View 2025 Corvette ›
2025	Chevrolet Corvette	E-Ray, 2D Convertible	View 2025 Corvette ›
2025	Chevrolet Corvette	ZR1, 2D Coupe	View 2025 Corvette ›
2018	Infiniti Q60	Red Sport 400, RWD	View 2018 Q60 ›
2019	Infiniti Q60	Red Sport 400, RWD	View 2019 Q60 ›
2020	Infiniti Q60	Red Sport 400, RWD	View 2020 Q60 ›
2021	Infiniti Q60	Red Sport 400, RWD	View 2021 Q60 ›
2022	Infiniti Q60	Red Sport 400, RWD	View 2022 Q60 ›
2024	Tesla Model 3	Performance	View 2024 Model 3 ›
2025	Tesla Model 3	Long Range, RWD	View 2025 Model 3 ›