255/55R19 Tire Size Specifications & Compatible Vehicles

Overall Diameter

763.1 mm

Section Width

255 mm

Sidewall Height

140.3 mm

Circumference

2397.3 mm

Revs/Mile

671

Rim Diameter

19"

Inch Equivalent

30x10R19

Rim Width (ETRTO)

7.5" – 10.0"

Compatible Vehicles

The following vehicles use 255/55R19 tires from the factory:

2025 Acura MDX Base 2024 Acura MDX Base 2023 Acura MDX Base 2022 Acura MDX Base 2025 Audi Q7 Premium 55 TFSI quattro 2024 Audi Q7 Premium 55 TFSI quattro 2023 Audi Q7 Premium 55 TFSI quattro 2022 Audi Q7 Premium 55 TFSI quattro 2021 Audi Q7 Premium 55 TFSI quattro 2020 Audi Q7 Premium 55 TFSI quattro 2025 Genesis GV80 2.5T Standard 2024 Genesis GV80 2.5T Standard 2023 Genesis GV80 2.5T Standard 2022 Genesis GV80 2.5T Standard 2021 Genesis GV80 2.5T

Alternative Tire Sizes

These tire sizes are within 3% overall diameter of 255/55R19 and may be used as replacements:

165/85R19 Safe 0.0% diff 255/60R18 Safe 0.0% diff 255/50R20 Safe 0.0% diff 195/85R17 Safe 0.0% diff 255/65R17 Safe 0.0% diff 255/45R21 Safe 0.0% diff 235/65R18 Safe 0.1% diff 175/80R19 Safe 0.1% diff 305/50R18 Safe 0.1% diff 215/65R19 Safe 0.1% diff 275/60R17 Safe 0.2% diff 165/70R21 Safe 0.2% diff

Popular Comparisons

See how 255/55R19 compares to other common tire sizes:

255/55R19 vs 275/55R20 Luxury SUV rim upgrade 255/55R19 vs 235/55R19 Luxury SUV width comparison 235/60R18 vs 255/55R19 SUV width and rim upgrade

Understanding 255/55R19

The tire size 255/55R19 means the tire has a section width of 255mm, an aspect ratio of 55% (the sidewall height is 55% of the width), and fits a 19-inch rim.

Sidewall Height = 255 x 0.55 = 140.3 mm
Overall Diameter = (140.3 x 2) + (19 x 25.4) = 763.1 mm
Circumference = 763.1 x π = 2397.3 mm

Frequently Asked Questions

What vehicles use 255/55R19 tires? ▼

The 255/55R19 tire size is used on 15 vehicle trims including the 2025 Acura MDX, 2024 Acura MDX, 2023 Acura MDX and 12 more.

What is the diameter of a 255/55R19 tire? ▼

A 255/55R19 tire has an overall diameter of 763.1mm (30.0 inches). The sidewall height is 140.3mm, and the total circumference is 2397mm.

What rim width do I need for 255/55R19 tires? ▼

For 255/55R19 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.

Can I replace 255/55R19 with a different size? ▼

Yes, as long as the replacement tire overall diameter is within 3% of the 255/55R19 763.1mm diameter. Compatible alternatives include 165/85R19, 255/60R18, 255/50R20. Use our Tire Size Calculator to compare any two sizes.