255/35R20 Tire Size Specifications & Compatible Vehicles
Overall Diameter
686.5 mm
Section Width
255 mm
Sidewall Height
89.3 mm
Circumference
2156.7 mm
Revs/Mile
746
Rim Diameter
20"
Inch Equivalent
27x10R20
Rim Width (ETRTO)
7.5" – 10.0"
Compatible Vehicles
The following vehicles use 255/35R20 tires from the factory:
Alternative Tire Sizes
These tire sizes are within 3% overall diameter of 255/35R20 and may be used as replacements:
Popular Comparisons
See how 255/35R20 compares to other common tire sizes:
Understanding 255/35R20
The tire size 255/35R20 means the tire has a section width of 255mm, an aspect ratio of 35% (the sidewall height is 35% of the width), and fits a 20-inch rim.
Sidewall Height = 255 x 0.35 = 89.3 mm
Overall Diameter = (89.3 x 2) + (20 x 25.4) = 686.5 mm
Circumference = 686.5 x π = 2156.7 mm
Overall Diameter = (89.3 x 2) + (20 x 25.4) = 686.5 mm
Circumference = 686.5 x π = 2156.7 mm
Frequently Asked Questions
The 255/35R20 tire size is used on 4 vehicle trims including the 2025 Acura TLX, 2024 Acura TLX, 2023 Acura TLX and 1 more.
A 255/35R20 tire has an overall diameter of 686.5mm (27.0 inches). The sidewall height is 89.3mm, and the total circumference is 2157mm.
For 255/35R20 tires, the ETRTO recommended rim width is 8.5". The acceptable range is 7.5" minimum to 10.0" maximum. Using a rim outside this range can cause improper bead seating and unsafe handling.
Yes, as long as the replacement tire overall diameter is within 3% of the 255/35R20 686.5mm diameter. Compatible alternatives include 255/40R19, 255/30R21, 255/45R18. Use our Tire Size Calculator to compare any two sizes.