275/40R20 Tire Size Specifications
This tire size 275/40R20 fits 9 vehicles in our database.
Everything to know about the 275/40R20 tire size
Size geometry
A 275/40R20 tire has a 275mm section width and a 40% aspect ratio, mounted on a 20-inch rim. Sidewall height works out to 110.0mm (4.33") and overall outside diameter is 728.0mm (28.66"). At highway speed the tire completes about 437 revolutions per kilometre â your speedometer and odometer were calibrated against this number.
Direct substitute sizes
If 275/40R20 is unavailable, the closest same-diameter substitutes on the same rim are 265/42R20 and 285/39R20. Both keep your speedometer reading within 1% â safe for daily use, ABS, and stability control. Always verify load and speed ratings before swapping.
Plus / minus sizing options
For a 275/40R20 you can upsize to 285/34R21 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 265/46R19 (minus-one) for a softer ride or winter setup. Both stay inside the Âą3% diameter tolerance that ABS and TPMS systems expect.
Vehicle compatibility
9 vehicles in our database run the 275/40R20 tire size from the factory. Aftermarket fitment depends on rim width, offset, and clearance â match these specs to your wheel before purchasing tires.
Vehicles Using 275/40R20
Bentley Continental GT
Years: 2011 - 2018
Bentley Flying Spur
Years: 2013 - 2019
BMW X6
Years: 2014 - 2019
Chevrolet Camaro
Years: 2010 - 2015
Dodge Challenger
Years: 2015 - 2023
Land Rover Range Rover Sport
Years: 2005 - 2013
Lexus LS
Years: 2017 - 2026
Porsche Cayenne
Years: 2003 - 2010
Volkswagen Touareg
Years: 2010 - 2018