225/40R18 Tire Size in Inches

A 225/40R18 tire is about 25.1 inches tall and 8.86 inches wide, with a 3.54-inch sidewall, fitted to a 18-inch wheel.

Source: manufacturer documents (listed below) · Updated 2026-11-05 · By CarWhere Research

Overall diameter
25.1 in
Section width
8.86 in
Sidewall height
3.54 in
Revolutions / mile
804

Calculated nominal dimensions; circumference 78.8 in. Measured size varies slightly by tire model and rim width.

Vehicles with factory 225/40R18 tires

Vehicles fitted with 225/40R18 tires from the factory
VehicleTrimYears
Toyota CorollaType D2020, 2023, 2024[1],[4],[5]
Toyota CorollaType C2021, 2022, 2023, 2024, 2025, 2026[2],[3],[4],[5],[6],[7]
Toyota CorollaType F2021, 2022[2],[3]

Compared with nearby sizes

225/40R18 compared with nearby sizes
SizeDiameterDifference
225/40R1825.1 in—
225/35R1824.2 in-3.6%
225/45R1826 in+3.6%

Width in inches

225 tire size in inches

Check the exact vehicle, not just the model

Trim, package and production changes all move these numbers. Decode the 17-character VIN with the free VIN decoder to confirm the engine and trim, or see the federal engine and MPG specs. Shopping? Browse live inventory and what buyers actually paid.

Frequently asked questions

How tall is a 225/40R18 tire in inches?

About 25.1 inches: a 18-inch wheel plus two 3.54-inch sidewalls (225 × 40% = 90 mm each).

How wide is a 225/40R18 tire?

8.86 inches of section width (225 mm ÷ 25.4).

What vehicles come with 225/40R18 tires?

In our manufacturer-sourced data: Toyota Corolla — trims and years are in the table above.

Sources

  1. Toyota Motor Sales, U.S.A., Inc., Toyota 2020 Corolla Owner's Manual (OM02580U), 8-1. Specifications, Tires and wheels (accessed 2026-11-05).
  2. Toyota Motor Sales, U.S.A., Inc., Toyota 2021 Corolla Owner's Manual (OM02582U), 8-1. Specifications, Tires and wheels (accessed 2026-11-05).
  3. Toyota Motor Sales, U.S.A., Inc., Toyota 2022 Corolla Owner's Manual (OM02617U), 8-1. Specifications, Tires and wheels (accessed 2026-11-05).
  4. Toyota Motor Sales, U.S.A., Inc., Toyota 2023 through Mar. 2023 Prod. Corolla Owner's Manual (OM02525U), 8-1. Specifications, Tires and wheels (accessed 2026-11-05).
  5. Toyota Motor Sales, U.S.A., Inc., Toyota 2024 Corolla Owner's Manual USA and Canada Only (OM02684U), 8-1. Specifications, Tires and wheels (accessed 2026-11-05).
  6. Toyota Motor Sales, U.S.A., Inc., Toyota 2025 Corolla Owner's Manual USA and Canada Only (OM02688U), 8-1. Specifications, Tires and wheels (accessed 2026-11-05).
  7. Toyota Motor Sales, U.S.A., Inc., Toyota 2026 Corolla through Mar. 2026 Prod. Owner's Manual USA and Canada Only (OM02722U), 8-1. Specifications, Tires and wheels (accessed 2026-11-05).