What is the diameter of a 245/35R20 tire?

A 245/35R20 tire has an overall diameter of 26.75 inches (679.4mm).

How many revolutions per mile does a 245/35R20 tire make?

A 245/35R20 tire makes approximately 754 revolutions per mile.

What rim width is recommended for 245/35R20 tires?

The recommended wheel rim width for a 245/35R20 tire is 6.1" - 8.6".

245/35R20

Standard Metric

Factory Specs, Physical Dimensions & Compatible Vehicle Applications

Factory Spec Overview

The 245/35R20 tire size features an overall diameter of 26.75 inches, a section width of 9.6 inches (245mm), and rotates 754 times per mile. It is a standard factory tire fitment on 150+ vehicle models including BMW M550i xDrive, BMW M850i xDrive.

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Physical Dimensions & Specs

Overall Diameter

26.75"

679.4 mm

Section Width

245 mm

9.65" wide

Sidewall Height

3.38"

85.9 mm (35% aspect)

Revolutions / Mile

754

Circumference: 84.04"

Rim Diameter

20"

Wheel size

Recommended Rim Width

6.1" - 8.6"

Optimal rim width range

Speedometer & Alternate Size Calculator

Testing an alternate size for your vehicle? Compare 245/35R20 against any proposed tire size below:

Popular Comparisons:

Tire 1 (Stock / Base)245/35R20

Section Width (mm)

Aspect Ratio (%)

Rim Diameter (in)

Wheel Width (in)

Offset ET (mm)

Overall Height:26.8"

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 66.3 mph

Indicated	Actual Speed	Diff
20 mph	22.1 mph	+2.1 mph
30 mph	33.2 mph	+3.2 mph
45 mph	49.7 mph	+4.7 mph
60 mph	66.3 mph	+6.3 mph
75 mph	82.9 mph	+7.9 mph
90 mph	99.5 mph	+9.5 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:+1.41" ground clearance

Vehicles That Fit 245/35R20 (150+ Models)

Factory standard and optional vehicle fitments utilizing 245/35R20 tires:

Year	Make & Model	Trim / Variant	Lookup Specs
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 ›
2017	Ford GT	GT	View 2017 GT ›
2018	Ford GT	GT	View 2018 GT ›
2019	Ford GT	GT	View 2019 GT ›
2020	Ford GT	GT	View 2020 GT ›
2021	Ford GT	GT	View 2021 GT ›
2022	Ford GT	GT	View 2022 GT ›
2012	Porsche 911	Carrera S, 2D Convertible, 3.8L Eng VIN B, Automatic DCT Trans	View 2012 911 ›
2012	Porsche 911	Carrera S, 2D Convertible, 3.8L Eng VIN B, Standard Trans	View 2012 911 ›
2012	Porsche 911	Carrera S, 2D Convertible, 3.8L Eng, Eng CD MA1.01, Automatic DCT Trans	View 2012 911 ›
2012	Porsche 911	Carrera S, 2D Convertible, 3.8L Eng, Eng CD MA1.01, Standard Trans	View 2012 911 ›
2012	Porsche 911	Carrera S, 2D Convertible, 3.8L Eng, Eng CD MA1.03, Automatic DCT Trans	View 2012 911 ›
2012	Porsche 911	Carrera S, 2D Convertible, 3.8L Eng, Eng CD MA1.03, Standard Trans	View 2012 911 ›
2012	Porsche 911	Carrera S, 2D Coupe, 3.8L Eng VIN B, Automatic DCT Trans	View 2012 911 ›
2012	Porsche 911	Carrera S, 2D Coupe, 3.8L Eng VIN B, Standard Trans	View 2012 911 ›
2012	Porsche 911	Carrera S, 2D Coupe, 3.8L Eng, Eng CD MA1.01, Automatic DCT Trans	View 2012 911 ›
2012	Porsche 911	Carrera S, 2D Coupe, 3.8L Eng, Eng CD MA1.01, Standard Trans	View 2012 911 ›
2012	Porsche 911	Carrera S, 2D Coupe, 3.8L Eng, Eng CD MA1.03, Automatic DCT Trans	View 2012 911 ›
2012	Porsche 911	Carrera S, 2D Coupe, 3.8L Eng, Eng CD MA1.03, Standard Trans	View 2012 911 ›
2013	Porsche 911	Carrera 4S, 2D Convertible, Automatic DCT Trans	View 2013 911 ›
2013	Porsche 911	Carrera 4S, 2D Coupe, Automatic DCT Trans	View 2013 911 ›
2013	Porsche 911	Carrera 4S, 2D Convertible, Standard Trans	View 2013 911 ›
2013	Porsche 911	Carrera S, 2D Convertible, Automatic DCT Trans	View 2013 911 ›
2013	Porsche 911	Carrera 4S, 2D Coupe, Standard Trans	View 2013 911 ›
2013	Porsche 911	Carrera S, 2D Convertible, Standard Trans	View 2013 911 ›
2013	Porsche 911	Carrera S, 2D Coupe, Automatic DCT Trans	View 2013 911 ›
2013	Porsche 911	Carrera S, 2D Coupe, Standard Trans	View 2013 911 ›
2014	Porsche 911	50th Anniversary Edition, Automatic DCT Trans	View 2014 911 ›
2014	Porsche 911	50th Anniversary Edition, Standard Trans	View 2014 911 ›
2014	Porsche 911	Carrera S, 2D Convertible, Standard Trans	View 2014 911 ›
2014	Porsche 911	Carrera 4S, 2D Coupe, Standard Trans	View 2014 911 ›
2014	Porsche 911	Carrera 4S, 2D Coupe, Automatic DCT Trans	View 2014 911 ›
2014	Porsche 911	Carrera 4S, 2D Convertible, Standard Trans	View 2014 911 ›
2014	Porsche 911	Carrera S, 2D Convertible, Automatic DCT Trans	View 2014 911 ›
2014	Porsche 911	Carrera S, 2D Coupe, Automatic DCT Trans	View 2014 911 ›
2014	Porsche 911	Carrera S, 2D Coupe, Standard Trans	View 2014 911 ›
2014	Porsche 911	Carrera 4S, 2D Convertible, Automatic DCT Trans	View 2014 911 ›
2014	Porsche 911	GT3	View 2014 911 ›
2014	Porsche 911	Turbo S, 2D Convertible	View 2014 911 ›
2014	Porsche 911	Targa 4S, Standard Trans	View 2014 911 ›
2014	Porsche 911	Targa 4S, Automatic DCT Trans	View 2014 911 ›
2014	Porsche 911	Turbo S, 2D Coupe	View 2014 911 ›
2014	Porsche 911	Turbo, 2D Convertible	View 2014 911 ›
2014	Porsche 911	Turbo, 2D Coupe	View 2014 911 ›
2015	Porsche 911	Carrera 4S, 2D Convertible, Standard Trans	View 2015 911 ›
2015	Porsche 911	Carrera 4S, 2D Convertible, Automatic DCT Trans	View 2015 911 ›
2015	Porsche 911	Carrera 4GTS, 2D Convertible, Standard Trans	View 2015 911 ›
2015	Porsche 911	Carrera 4GTS, 2D Coupe, Automatic DCT Trans	View 2015 911 ›
2015	Porsche 911	Carrera GTS, 2D Coupe, Standard Trans	View 2015 911 ›
2015	Porsche 911	Carrera S, 2D Convertible, Standard Trans	View 2015 911 ›
2015	Porsche 911	Carrera GTS, 2D Convertible, Automatic DCT Trans	View 2015 911 ›
2015	Porsche 911	Carrera 4GTS, 2D Convertible, Automatic DCT Trans	View 2015 911 ›
2015	Porsche 911	Carrera S, 2D Coupe, Automatic DCT Trans	View 2015 911 ›
2015	Porsche 911	Carrera GTS, 2D Convertible, Standard Trans	View 2015 911 ›
2015	Porsche 911	Carrera GTS, 2D Coupe, Automatic DCT Trans	View 2015 911 ›
2015	Porsche 911	Carrera 4S, 2D Coupe, Standard Trans	View 2015 911 ›
2015	Porsche 911	Carrera 4S, 2D Coupe, Automatic DCT Trans	View 2015 911 ›
2015	Porsche 911	Carrera S, 2D Convertible, Automatic DCT Trans	View 2015 911 ›
2015	Porsche 911	Carrera 4GTS, 2D Coupe, Standard Trans	View 2015 911 ›
2015	Porsche 911	Turbo S, 2D Convertible	View 2015 911 ›
2015	Porsche 911	Targa 4S, Automatic DCT Trans	View 2015 911 ›
2015	Porsche 911	Targa 4S, Standard Trans	View 2015 911 ›
2015	Porsche 911	Turbo S, 2D Coupe	View 2015 911 ›
2015	Porsche 911	Turbo, 2D Convertible	View 2015 911 ›
2015	Porsche 911	Turbo, 2D Coupe	View 2015 911 ›
2015	Porsche 911	Carrera S, 2D Coupe, Standard Trans	View 2015 911 ›
2015	Porsche 911	GT3	View 2015 911 ›
2016	Porsche 911	Carrera GTS, 2D Coupe, Standard Trans	View 2016 911 ›
2016	Porsche 911	Carrera 4S, 2D Coupe, Standard Trans	View 2016 911 ›
2016	Porsche 911	Carrera 4S, 2D Convertible, Automatic DCT Trans	View 2016 911 ›
2016	Porsche 911	Carrera 4S, 2D Coupe, Automatic DCT Trans	View 2016 911 ›
2016	Porsche 911	Carrera GTS, 2D Convertible, Standard Trans	View 2016 911 ›
2016	Porsche 911	Carrera GTS, 2D Convertible, Automatic DCT Trans	View 2016 911 ›
2016	Porsche 911	Carrera 4S, 2D Convertible, Standard Trans	View 2016 911 ›
2016	Porsche 911	Carrera 4GTS, 2D Convertible, Standard Trans	View 2016 911 ›
2016	Porsche 911	Carrera GTS, 2D Coupe, Automatic DCT Trans	View 2016 911 ›
2016	Porsche 911	Carrera 4GTS, 2D Convertible, Automatic DCT Trans	View 2016 911 ›
2016	Porsche 911	Carrera 4GTS, 2D Coupe, Standard Trans	View 2016 911 ›
2016	Porsche 911	Carrera S, 2D Convertible, Standard Trans	View 2016 911 ›
2016	Porsche 911	Carrera S, 2D Convertible, Automatic DCT Trans	View 2016 911 ›
2016	Porsche 911	Carrera S, 2D Coupe, Standard Trans	View 2016 911 ›
2016	Porsche 911	Carrera S, 2D Coupe, Automatic DCT Trans	View 2016 911 ›
2016	Porsche 911	Carrera 4GTS, 2D Coupe, Automatic DCT Trans	View 2016 911 ›
2016	Porsche 911	GT3	View 2016 911 ›
2016	Porsche 911	Targa 4 GTS, Automatic DCT Trans	View 2016 911 ›
2016	Porsche 911	Targa 4 GTS, Standard Trans	View 2016 911 ›
2016	Porsche 911	Targa 4S, Automatic DCT Trans	View 2016 911 ›
2016	Porsche 911	Turbo S, 2D Convertible	View 2016 911 ›
2016	Porsche 911	Targa 4S, Standard Trans	View 2016 911 ›
2016	Porsche 911	Turbo S, 2D Coupe	View 2016 911 ›
2016	Porsche 911	Turbo, 2D Convertible	View 2016 911 ›
2016	Porsche 911	Turbo, 2D Coupe	View 2016 911 ›
2016	Porsche Cayman	GT4	View 2016 Cayman ›
2017	Porsche 911	Carrera S, 2D Convertible, Automatic DCT Trans	View 2017 911 ›
2017	Porsche 911	Carrera 4S, 2D Convertible, Standard Trans	View 2017 911 ›
2017	Porsche 911	Carrera 4S, 2D Coupe, Automatic DCT Trans	View 2017 911 ›
2017	Porsche 911	Carrera 4S, 2D Convertible, Automatic DCT Trans	View 2017 911 ›
2017	Porsche 911	Carrera S, 2D Convertible, Standard Trans	View 2017 911 ›
2017	Porsche 911	Carrera S, 2D Coupe, Automatic DCT Trans	View 2017 911 ›
2017	Porsche 911	Carrera 4S, 2D Coupe, Standard Trans	View 2017 911 ›
2017	Porsche 911	Turbo S, 2D Coupe	View 2017 911 ›
2017	Porsche 911	Turbo S, 2D Convertible	View 2017 911 ›