What size tires are on a Ford Focus ST?
The standard tire size for a Ford Focus ST is 235/40R18. This high-performance compact car comes equipped with 18-inch alloy wheels and tires that provide a balance of sporty handling and comfortable ride quality.
Tire Specifications for the Ford Focus ST
The Ford Focus ST is designed to deliver an engaging driving experience, and its tire specifications play a key role in achieving that goal. The 235/40R18 tire size means:
- 235 - The tire width in millimeters
- 40 - The aspect ratio, which is the ratio of the tire's sidewall height to the tread width
- R - The tire construction is radial
- 18 - The wheel diameter in inches
This tire size provides the Focus ST with a sportier, lower-profile look compared to the standard Focus model. The wider 235mm tread width and 40 series aspect ratio offer improved grip and handling performance, while the 18-inch wheel diameter helps fill out the wheel wells for a more aggressive stance.
Tire Upgrade Options
While the factory 235/40R18 tires are well-suited for the Focus ST, some owners may choose to upgrade to larger or higher-performance tires to further enhance the driving dynamics. Common tire upgrade options include:
- 245/35R19 - Slightly wider tread width for increased grip
- 255/35R19 - Even wider tread for maximum performance
- Summer performance tires - Offer better dry and wet weather grip than all-season tires
However, it's important to ensure any tire upgrades are compatible with the Focus ST's suspension and braking system. Consulting with a tire or automotive specialist is recommended before making any changes.
