235/45R18 Tire Size Specifications & Compatible Vehicles

Overall Diameter

668.7 mm

Section Width

235 mm

Sidewall Height

105.8 mm

Circumference

2100.8 mm

Revs/Mile

766

Rim Diameter

18"

Inch Equivalent

26.3x9.3R18

Rim Width (ETRTO)

7.0" – 9.0"

Compatible Vehicles

The following vehicles use 235/45R18 tires from the factory:

2025 Acura Integra Base 2025 Acura Integra A-Spec Technology 2024 Acura Integra Base 2024 Acura Integra A-Spec Technology 2023 Acura Integra A-Spec Technology 2025 Honda Accord Sport/EX-L 2024 Honda Accord Sport/EX-L 2023 Honda Accord Sport/EX-L/Touring 2022 Honda Accord Sport/EX-L/Touring 2021 Honda Accord Sport/EX-L/Touring 2020 Honda Accord Sport/EX-L/Touring 2025 Tesla Model 3 Standard Range/Long Range 2024 Tesla Model 3 Standard Range/Long Range 2023 Tesla Model 3 Standard Range Plus/Long Range 2022 Tesla Model 3 Standard Range Plus/Long Range 2021 Tesla Model 3 Standard Range Plus/Long Range 2020 Tesla Model 3 Standard Range Plus/Long Range 2025 Toyota Camry SE 2025 Toyota Camry XLE/XSE 2024 Toyota Camry SE/XSE 2024 Toyota Camry XLE 2023 Toyota Camry XLE/TRD 2022 Toyota Camry XLE/TRD 2021 Toyota Camry XLE/TRD 2020 Toyota Camry XLE/TRD 2025 Volvo S60 Plus B5 AWD 2024 Volvo S60 Plus B5 AWD

Alternative Tire Sizes

These tire sizes are within 3% overall diameter of 235/45R18 and may be used as replacements:

155/60R19 Safe 0.0% diff 175/75R16 Safe 0.0% diff 215/55R17 Safe 0.1% diff 265/40R18 Safe 0.1% diff 265/35R19 Safe 0.1% diff 295/40R17 Safe 0.1% diff 185/50R19 Safe 0.2% diff 155/85R16 Safe 0.2% diff 175/60R18 Safe 0.2% diff 265/45R17 Safe 0.2% diff 205/45R19 Safe 0.2% diff 165/80R16 Safe 0.3% diff

Popular Comparisons

See how 235/45R18 compares to other common tire sizes:

235/45R18 vs 245/40R18 Wider, lower-profile swap 235/45R18 vs 225/45R17 Plus-one sport comparison 245/45R18 vs 235/45R18 Width comparison on 18-inch 225/45R18 vs 235/45R18 Width upgrade on 18-inch

Understanding 235/45R18

The tire size 235/45R18 means the tire has a section width of 235mm, an aspect ratio of 45% (the sidewall height is 45% of the width), and fits a 18-inch rim.

Sidewall Height = 235 x 0.45 = 105.8 mm
Overall Diameter = (105.8 x 2) + (18 x 25.4) = 668.7 mm
Circumference = 668.7 x π = 2100.8 mm

Frequently Asked Questions

What vehicles use 235/45R18 tires? ▼

The 235/45R18 tire size is used on 27 vehicle trims including the 2025 Acura Integra, 2025 Acura Integra, 2024 Acura Integra and 24 more.

What is the diameter of a 235/45R18 tire? ▼

A 235/45R18 tire has an overall diameter of 668.7mm (26.3 inches). The sidewall height is 105.8mm, and the total circumference is 2101mm.

What rim width do I need for 235/45R18 tires? ▼

For 235/45R18 tires, the ETRTO recommended rim width is 8.0". The acceptable range is 7.0" minimum to 9.0" maximum. Using a rim outside this range can cause improper bead seating and unsafe handling.

Can I replace 235/45R18 with a different size? ▼

Yes, as long as the replacement tire overall diameter is within 3% of the 235/45R18 668.7mm diameter. Compatible alternatives include 155/60R19, 175/75R16, 215/55R17. Use our Tire Size Calculator to compare any two sizes.