What is the diameter of a 285/30R20 tire?

A 285/30R20 tire has an overall diameter of 26.73 inches (678.9mm).

How many revolutions per mile does a 285/30R20 tire make?

A 285/30R20 tire makes approximately 754 revolutions per mile.

What rim width is recommended for 285/30R20 tires?

The recommended wheel rim width for a 285/30R20 tire is 7.1" - 10".

285/30R20

Standard Metric

Factory Specs, Physical Dimensions & Compatible Vehicle Applications

Factory Spec Overview

The 285/30R20 tire size features an overall diameter of 26.73 inches, a section width of 11.2 inches (285mm), and rotates 754 times per mile. It is a standard factory tire fitment on 140+ vehicle models including BMW Z8, BMW M4.

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Physical Dimensions & Specs

Overall Diameter

26.73"

678.9 mm

Section Width

285 mm

11.22" wide

Sidewall Height

3.37"

85.6 mm (30% aspect)

Revolutions / Mile

754

Circumference: 83.98"

Rim Diameter

20"

Wheel size

Recommended Rim Width

7.1" - 10"

Optimal rim width range

Speedometer & Alternate Size Calculator

Testing an alternate size for your vehicle? Compare 285/30R20 against any proposed tire size below:

Popular Comparisons:

Tire 1 (Stock / Base)285/30R20

Section Width (mm)

Aspect Ratio (%)

Rim Diameter (in)

Wheel Width (in)

Offset ET (mm)

Overall Height:26.7"

Sidewall:3.4"

Revs/Mile:754

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

+10.6%At 60 mph reading, actual speed is 66.4 mph

Indicated	Actual Speed	Diff
20 mph	22.1 mph	+2.1 mph
30 mph	33.2 mph	+3.2 mph
45 mph	49.8 mph	+4.8 mph
60 mph	66.4 mph	+6.4 mph
75 mph	83.0 mph	+8.0 mph
90 mph	99.6 mph	+9.6 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:+1.42" ground clearance

Vehicles That Fit 285/30R20 (140+ Models)

Factory standard and optional vehicle fitments utilizing 285/30R20 tires:

Year	Make & Model	Trim / Variant	Lookup Specs
2003	BMW Z8	Alpina	View 2003 Z8 ›
2016	BMW M4	GTS	View 2016 M4 ›
2019	BMW M4	CS	View 2019 M4 ›
2020	BMW M4	Base, 2D Coupe, Standard Trans	View 2020 M4 ›
2020	BMW M4	Base, 2D Convertible, Standard Trans	View 2020 M4 ›
2020	BMW M4	Base, 2D Coupe, Automatic DCT Trans	View 2020 M4 ›
2020	BMW M4	Base, 2D Convertible, Automatic DCT Trans	View 2020 M4 ›
2020	BMW M4	CS	View 2020 M4 ›
2022	BMW M3	Competition xDrive	View 2022 M3 ›
2022	BMW M3	Competition	View 2022 M3 ›
2022	BMW M4	Competition xDrive, 2D Coupe	View 2022 M4 ›
2022	BMW M4	Competition xDrive, 2D Convertible	View 2022 M4 ›
2022	BMW M4	Competition	View 2022 M4 ›
2023	BMW M2	Standard Trans	View 2023 M2 ›
2023	BMW M2	Automatic Trans	View 2023 M2 ›
2023	BMW M4	Competition xDrive, 2D Coupe	View 2023 M4 ›
2023	BMW M4	Competition xDrive, 2D Convertible	View 2023 M4 ›
2023	BMW M4	CSL	View 2023 M4 ›
2023	BMW M4	Competition	View 2023 M4 ›
2023	BMW M3	Competition	View 2023 M3 ›
2023	BMW M3	Competition xDrive	View 2023 M3 ›
2024	BMW M2	Automatic Trans	View 2024 M2 ›
2024	BMW M4	Competition xDrive, 2D Convertible	View 2024 M4 ›
2024	BMW M4	Competition xDrive, 2D Coupe	View 2024 M4 ›
2024	BMW M3	CS	View 2024 M3 ›
2024	BMW M2	Standard Trans	View 2024 M2 ›
2024	BMW M4	Competition	View 2024 M4 ›
2024	BMW M3	Competition	View 2024 M3 ›
2024	BMW M3	Competition xDrive	View 2024 M3 ›
2025	BMW M4	Competition	View 2025 M4 ›
2025	BMW M2	Automatic Trans	View 2025 M2 ›
2025	BMW M4	Base	View 2025 M4 ›
2025	BMW M4	Competition xDrive, 2D Convertible	View 2025 M4 ›
2025	BMW M4	Competition xDrive, 2D Coupe	View 2025 M4 ›
2025	BMW M3	Base	View 2025 M3 ›
2025	BMW M2	Standard Trans	View 2025 M2 ›
2017	Chevrolet Camaro	ZL1, 2D Convertible, Standard Trans	View 2017 Camaro ›
2017	Chevrolet Camaro	SS, 2D Coupe, Automatic Trans	View 2017 Camaro ›
2017	Chevrolet Camaro	SS, 2D Convertible, Standard Trans	View 2017 Camaro ›
2017	Chevrolet Camaro	SS, 2D Coupe, Standard Trans	View 2017 Camaro ›
2017	Chevrolet Camaro	ZL1, 2D Coupe, Standard Trans	View 2017 Camaro ›
2017	Chevrolet Camaro	ZL1, 2D Convertible, Automatic Trans	View 2017 Camaro ›
2017	Chevrolet Camaro	SS, 2D Convertible, Automatic Trans	View 2017 Camaro ›
2017	Chevrolet Camaro	ZL1, 2D Coupe, Automatic Trans	View 2017 Camaro ›
2018	Chevrolet Camaro	SS, 2D Convertible, Automatic Trans	View 2018 Camaro ›
2018	Chevrolet Camaro	ZL1, 2D Coupe, Standard Trans	View 2018 Camaro ›
2018	Chevrolet Camaro	SS, 2D Coupe, Automatic Trans	View 2018 Camaro ›
2018	Chevrolet Camaro	ZL1, 2D Coupe, Automatic Trans	View 2018 Camaro ›
2018	Chevrolet Camaro	ZL1, 2D Convertible, Automatic Trans	View 2018 Camaro ›
2018	Chevrolet Camaro	SS, 2D Coupe, Standard Trans	View 2018 Camaro ›
2018	Chevrolet Camaro	ZL1, 2D Convertible, Standard Trans	View 2018 Camaro ›
2018	Chevrolet Camaro	SS, 2D Convertible, Standard Trans	View 2018 Camaro ›
2019	Chevrolet Camaro	SS, 2D Convertible, Automatic Trans	View 2019 Camaro ›
2019	Chevrolet Camaro	SS, 2D Convertible, Standard Trans	View 2019 Camaro ›
2019	Chevrolet Camaro	ZL1, 2D Convertible, Automatic Trans	View 2019 Camaro ›
2019	Chevrolet Camaro	SS, 2D Coupe, Standard Trans	View 2019 Camaro ›
2019	Chevrolet Camaro	SS, 2D Coupe, Automatic Trans	View 2019 Camaro ›
2019	Chevrolet Camaro	ZL1, 2D Convertible, Standard Trans	View 2019 Camaro ›
2019	Chevrolet Camaro	ZL1, 2D Coupe, Automatic Trans	View 2019 Camaro ›
2019	Chevrolet Camaro	ZL1, 2D Coupe, Standard Trans	View 2019 Camaro ›
2020	Chevrolet Camaro	SS, 2D Convertible, Automatic Trans	View 2020 Camaro ›
2020	Chevrolet Camaro	SS, 2D Convertible, Standard Trans	View 2020 Camaro ›
2020	Chevrolet Camaro	ZL1, 2D Coupe, Automatic Trans	View 2020 Camaro ›
2020	Chevrolet Camaro	ZL1, 2D Convertible, Standard Trans	View 2020 Camaro ›
2020	Chevrolet Camaro	SS, 2D Coupe, Automatic Trans	View 2020 Camaro ›
2020	Chevrolet Camaro	ZL1, 2D Coupe, Standard Trans	View 2020 Camaro ›
2020	Chevrolet Camaro	SS, 2D Coupe, Standard Trans	View 2020 Camaro ›
2020	Chevrolet Camaro	ZL1, 2D Convertible, Automatic Trans	View 2020 Camaro ›
2021	Chevrolet Camaro	SS, 2D Coupe, Automatic Trans	View 2021 Camaro ›
2021	Chevrolet Camaro	SS, 2D Convertible, Standard Trans	View 2021 Camaro ›
2021	Chevrolet Camaro	SS, 2D Coupe, Standard Trans	View 2021 Camaro ›
2021	Chevrolet Camaro	ZL1, 2D Convertible, Automatic Trans	View 2021 Camaro ›
2021	Chevrolet Camaro	SS, 2D Convertible, Automatic Trans	View 2021 Camaro ›
2021	Chevrolet Camaro	ZL1, 2D Convertible, Standard Trans	View 2021 Camaro ›
2021	Chevrolet Camaro	ZL1, 2D Coupe, Automatic Trans	View 2021 Camaro ›
2021	Chevrolet Camaro	ZL1, 2D Coupe, Standard Trans	View 2021 Camaro ›
2022	Chevrolet Camaro	SS, 2D Coupe, Standard Trans	View 2022 Camaro ›
2022	Chevrolet Camaro	SS, 2D Coupe, Automatic Trans	View 2022 Camaro ›
2022	Chevrolet Camaro	SS, 2D Convertible, Standard Trans	View 2022 Camaro ›
2022	Chevrolet Camaro	SS, 2D Convertible, Automatic Trans	View 2022 Camaro ›
2022	Chevrolet Camaro	ZL1, 2D Coupe, Automatic Trans	View 2022 Camaro ›
2022	Chevrolet Camaro	ZL1, 2D Convertible, Automatic Trans	View 2022 Camaro ›
2022	Chevrolet Camaro	ZL1, 2D Coupe, Standard Trans	View 2022 Camaro ›
2022	Chevrolet Camaro	ZL1, 2D Convertible, Standard Trans	View 2022 Camaro ›
2023	Chevrolet Camaro	SS, 2D Convertible, Standard Trans	View 2023 Camaro ›
2023	Chevrolet Camaro	ZL1, 2D Convertible, Automatic Trans	View 2023 Camaro ›
2023	Chevrolet Camaro	SS, 2D Coupe, Standard Trans	View 2023 Camaro ›
2023	Chevrolet Camaro	ZL1, 2D Convertible, Standard Trans	View 2023 Camaro ›
2023	Chevrolet Camaro	SS, 2D Coupe, Automatic Trans	View 2023 Camaro ›
2023	Chevrolet Camaro	SS, 2D Convertible, Automatic Trans	View 2023 Camaro ›
2023	Chevrolet Camaro	ZL1, 2D Coupe, Automatic Trans	View 2023 Camaro ›
2023	Chevrolet Camaro	ZL1, 2D Coupe, Standard Trans	View 2023 Camaro ›
2024	Chevrolet Camaro	SS, 2D Convertible, Standard Trans	View 2024 Camaro ›
2024	Chevrolet Camaro	SS, 2D Convertible, Automatic Trans	View 2024 Camaro ›
2024	Chevrolet Camaro	SS, 2D Coupe, Automatic Trans	View 2024 Camaro ›
2024	Chevrolet Camaro	SS, 2D Coupe, Standard Trans	View 2024 Camaro ›
2024	Chevrolet Camaro	ZL1, 2D Convertible, Automatic Trans	View 2024 Camaro ›
2024	Chevrolet Camaro	ZL1, 2D Convertible, Standard Trans	View 2024 Camaro ›
2024	Chevrolet Camaro	ZL1, 2D Coupe, Standard Trans	View 2024 Camaro ›
2024	Chevrolet Camaro	ZL1, 2D Coupe, Automatic Trans	View 2024 Camaro ›
2001	Jaguar XKR	2D Coupe	View 2001 XKR ›
2001	Jaguar XKR	2D Convertible	View 2001 XKR ›
2002	Jaguar XKR	100, 2D Convertible	View 2002 XKR ›
2002	Jaguar XKR	100, 2D Coupe	View 2002 XKR ›
2006	Jaguar XK8	2D Convertible	View 2006 XK8 ›
2006	Jaguar XK8	2D Coupe	View 2006 XK8 ›
2009	Jaguar XF	Supercharged	View 2009 XF ›
2010	Jaguar XF	Supercharged	View 2010 XF ›
2010	Jaguar XFR	XFR	View 2010 XFR ›
2011	Jaguar XF	Supercharged	View 2011 XF ›
2011	Jaguar XFR	XFR	View 2011 XFR ›
2012	Jaguar XF	Supercharged	View 2012 XF ›
2012	Jaguar XFR	XFR	View 2012 XFR ›
2013	Jaguar XF	2.0	View 2013 XF ›
2013	Jaguar XF	Supercharged	View 2013 XF ›
2013	Jaguar XF	3.0, RWD	View 2013 XF ›
2013	Jaguar XFR	XFR	View 2013 XFR ›
2014	Jaguar XF	3.0L, 3.0L Eng VIN X	View 2014 XF ›
2014	Jaguar XF	3.0L, 3.0L Eng VIN F	View 2014 XF ›
2014	Jaguar XF	Supercharged	View 2014 XF ›
2014	Jaguar XKR	2D Convertible	View 2014 XKR ›
2014	Jaguar XK	Base, 2D Convertible	View 2014 XK ›
2014	Jaguar XK	Base, 2D Coupe	View 2014 XK ›
2014	Jaguar XKR	2D Coupe	View 2014 XKR ›
2014	Jaguar XFR	XFR	View 2014 XFR ›
2015	Jaguar XF	Sport, 3.0L Eng VIN F	View 2015 XF ›
2015	Jaguar XF	Sport, 3.0L Eng VIN 7	View 2015 XF ›
2015	Jaguar XF	Supercharged, 5.0L Eng VIN E	View 2015 XF ›
2015	Jaguar XFR	5.0L Eng VIN H	View 2015 XFR ›
2015	Jaguar XF	Supercharged, 5.0L Eng VIN P	View 2015 XF ›
2015	Jaguar XFR	5.0L Eng VIN C	View 2015 XFR ›
2015	Jaguar XK	2D Convertible	View 2015 XK ›
2015	Jaguar XK	2D Coupe	View 2015 XK ›
2015	Jaguar XKR	2D Coupe	View 2015 XKR ›
2015	Jaguar XKR	2D Convertible	View 2015 XKR ›
2014	Mercedes-Benz SL65 AMG	SL65 AMG	View 2014 SL65 AMG ›
2015	Mercedes-Benz SL65 AMG	SL65 AMG	View 2015 SL65 AMG ›
2016	Mercedes-Benz SL65 AMG	SL65 AMG	View 2016 SL65 AMG ›
2017	Mercedes-Benz SL65 AMG	SL65 AMG	View 2017 SL65 AMG ›
2018	Mercedes-Benz SL65 AMG	SL65 AMG	View 2018 SL65 AMG ›