255/45R20 Tire Size Specifications
This tire size 255/45R20 fits 16 vehicles in our database.
Everything to know about the 255/45R20 tire size
Size geometry
A 255/45R20 tire has a 255mm section width and a 45% aspect ratio, mounted on a 20-inch rim. Sidewall height works out to 114.8mm (4.52") and overall outside diameter is 737.5mm (29.04"). At highway speed the tire completes about 432 revolutions per kilometre â your speedometer and odometer were calibrated against this number.
Direct substitute sizes
If 255/45R20 is unavailable, the closest same-diameter substitutes on the same rim are 245/47R20 and 265/43R20. 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 255/45R20 you can upsize to 265/39R21 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 245/52R19 (minus-one) for a softer ride or winter setup. Both stay inside the Âą3% diameter tolerance that ABS and TPMS systems expect.
Vehicle compatibility
16 vehicles in our database run the 255/45R20 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 255/45R20
Acura RDX
Years: 2019 - 2026
Aito M5
Years: 2022 - 2026
Alfa Romeo Stelvio
Years: 2017 - 2026
BMW 7 Series
Years: 2022 - 2026
Hyundai Ioniq 5
Years: 2021 - 2026
Hyundai Santa Fe
Years: 2018 - 2023
Infiniti QX50
Years: 2019 - 2026
Jeep Grand Cherokee
Years: 2005 - 2010
Kia Sorento
Years: 2021 - 2026
Leapmotor C11
Years: 2020 - 2026
Lynk & Co 08
Years: 2023 - 2026
Mercedes-Benz EQE
Years: 2023 - 2026
Mercedes-Benz EQS
Years: 2022 - 2026
Mitsubishi Outlander
Years: 2022 - 2026
Nissan Ariya
Years: 2022 - 2026
Seres 5
Years: 2021 - 2026