FK8 Honda Civic Type R Compatible Tire Sizes (2017-2021)

The FK8 Honda Civic Type R (2017-2021) represents a significant milestone in front-wheel-drive performance engineering, featuring a Nürburgring-tuned chassis and advanced dual axis strut suspension. While the factory 245/30R20 tires were selected by Honda engineers to maximize steering response and cornering stability on smooth circuits, they present significant durability challenges on public roads. The minimal sidewall height offers insufficient vertical deflection to absorb kinetic energy from road irregularities such as potholes or expansion joints, leading to frequent wheel damage.

This guide provides a comprehensive reference for compatible tire sizes across multiple wheel diameters, with emphasis on the widely recommended 18-inch downsizing strategy. For detailed wheel fitment information including offset recommendations and brake clearance, see the FK8 Civic Type R Wheel Guide. For quick-reference wheel and tire combinations, consult the FK8 Wheel and Tire Cheatsheet.

FK8 Factory Tire Specifications

All FK8 Civic Type R models (2017-2021) came with a single factory tire specification across all markets:

The factory 245/30R20 tire carries a 90Y XL (Extra Load) rating, indicating a reinforced internal structure capable of carrying heavier loads at higher inflation pressures (up to 41 psi) compared to Standard Load tires. This load rating is critical for the FK8’s front-heavy weight distribution and high cornering loads. When shopping for a tire, ensure the load rating exceeds 90 and it is an XL rather than SL Load Range designated tire.

When using a tire size different from the OEM tires, the rule of thumb is to maintain a 3% plus or minus variance in overall tire diameter. This ensures:

• Speedometer and odometer accuracy remains acceptable
• ABS, traction control, and VSA systems function properly
• Vehicle dynamics such as braking and handling are not adversely affected
• Sufficient tire clearance is maintained within the wheel wells
• Indirect TPMS system can properly calibrate

The following sections list all compatible tire sizes within 3% of the factory diameter. Please note that these are theoretical tire size fitments based on diameter calculations. Having a size listed here does not mean a tire is made in that size, nor that your desired tire model will be available in that size.

18” Tire Sizes for the FK8 Civic Type R

The 18-inch wheel diameter is the consensus recommendation for FK8 owners seeking improved durability, reduced unsprung weight, and access to superior tire compounds. The factory 245/30R20 has an overall diameter of 25.75 inches (65.5 cm). The 18-inch sizes below maintain this diameter within the 3% tolerance.

19” Tire Sizes for the FK8 Civic Type R

The 19-inch wheel diameter represents a middle ground between the OEM 20-inch setup and the recommended 18-inch downsizing. The FL5 (2023+ Civic Type R) uses 19-inch OEM wheels, making this diameter relevant for cross-generation compatibility.

For more 19” tire size options, check out our tire size table or tire size calculator.

20” Tire Sizes for the FK8 Civic Type R (OEM)

Despite the fragility of the OEM 20” wheels, they are still the setup of choice for many FK8 owners. Many owners successfully use 245/35R20s and 255/35R20s, even though the 245/35 exceed our ±3% diameter tolerance. We mention this because 245/35 increases winter tire selection.

Caution: All 20-inch tire sizes suffer from minimal sidewall height, making them highly susceptible to wheel damage from potholes and road irregularities. Consider 18” or 19” downsizing for superior durability.

Tire Recommendations by Category

The FK8’s front-wheel-drive layout and high cornering capabilities make tire selection critical for performance. The 18-inch diameter offers the widest variety of options across all categories.

Extreme Performance Summer Tires

For track days, autocross, and maximum dry grip, extreme performance summer tires deliver the ultimate in cornering capability. These tires typically feature 200-treadwear ratings or lower, aggressive tread compounds, and stiff sidewalls that provide exceptional steering response and lateral grip. The trade-off is cost, reduced treadlife, and unsuitable performance in cold temperatures.

Popular choices in this category include the Yokohama ADVAN A052, Bridgestone Potenza RE-71RS, Falken Azenis RT660+, and Nankang Sportnex CR-S. These tires are purpose-built for competitive driving where ultimate grip outweighs daily usability.

Max Performance Summer Tires

The sweet spot for enthusiastic street driving and occasional track use, max performance summer tires deliver exceptional dry and wet performance while maintaining the road manners expected of high-end vehicle fitments. These tires typically feature 300-treadwear ratings, refined ride quality, and predictable behavior that can handle spirited driving and daily commutes with equal capability. The trade-off is reduced ultimate grip compared to extreme performance tires, though they compensate with superior wet traction, longer tread life, and better everyday usability.

Popular choices in this category include the Michelin Pilot Sport 4S, Continental ExtremeContact Sport 02, Bridgestone Potenza Sport, and Goodyear Eagle F1 Asymmetric 6. These tires are engineered for drivers seeking performance that can transition from track days to grocery runs without compromise.

Ultra High Performance All-Season Tires

For drivers seeking year-round capability without sacrificing performance, ultra high performance all-season tires balance dry and wet grip while remaining usable in light winter conditions. These tires typically feature 500+ treadwear ratings, refined ride quality, and the quiet comfort expected of premium vehicle fitments. The trade-off is reduced ultimate dry grip compared to summer tires, though they compensate with genuine winter capability that summer tires cannot provide.

Popular choices in this category include the Michelin Pilot Sport All Season 4, Continental ExtremeContact DWS06 Plus, and Bridgestone Potenza RE980AS+. These tires are engineered for drivers in moderate climates who want one set of tires capable of handling everything from spirited driving to snow-dusted morning commutes.

Winter / Snow Wheels and Tires

For true winter conditions, dedicated winter tires are essential. The FK8’s front-wheel-drive layout and high power output demand proper winter tires for safe operation in snow and ice. A popular winter setup is downsizing to 18x8” or 18x8.5” wheels with around a +40 offset with 235/40R18 or 245/40R18 winter tires. The narrower footprint maximizes contact pressure to cut through snow and slush.

Performance Winter and Snow

Performance winter tires balance winter grip with year-round usability. These tires feature aggressive tread patterns with sipes (small slits) to enhance snow and ice traction, while maintaining reasonable handling on dry roads. These tires are engineered for drivers in moderate winter climates who need reliable cold-weather performance without sacrificing too much summer handling.

Studless Ice and Snow

Studless ice and snow tires deliver maximum winter performance without metal studs, using advanced siping and tread rubber compounds that remain pliable in extreme cold. These tires excel in severe winter conditions including ice, packed snow, and slush, but trade away some dry-road handling and tread life. These tires are best suited for regions with long, harsh winters where maximum winter grip outweighs summer usability concerns.

Tire Pressure and TPMS Calibration

The FK8 Civic Type R employs an indirect TPMS system that infers pressure loss by comparing relative wheel speeds, rather than using physical sensors mounted in each wheel. This means you do not need to transfer sensors or purchase additional TPMS units when installing aftermarket wheels.

Calibration Protocol

Whenever wheel size or tire pressure is adjusted, the TPMS system must be recalibrated:

1. In your infotainment system navigate to: Settings > Vehicle > TPMS Calibration
2. Ensure all tires are set to desired cold pressure
3. Initiate calibration - the system will learn the new rolling radius
4. Drive for 10-20 minutes to complete the learning cycle

Important Fitment Notes

While all sizes listed are within 3% diameter tolerance, tire size alone does not determine fitment. You must also consider:

Wheel Width: Tire manufacturers publish recommended wheel width ranges for each tire size. A 265/35R18 tire on an 18x8.5” wheel will have different fitment characteristics than the same tire on an 18x9.5” wheel. See our FK8 wheel/tire cheatsheet for enthusiast validated combinations.

Wheel Offset: Lower offsets push the tire outward toward the fender, increasing the likelihood of rubbing. See our FK8 wheel fitment guide for offset recommendations.

Suspension Height: Lowered cars have reduced fender-to-tire clearance. What fits on stock suspension may rub when lowered.

Fender Modifications: Aggressive wheel offsets (+38mm or lower) with wide tires (265/35R18) often require front fender liner tab modification. See the wheel fitment guide for detailed instructions.

Tire Shoulder Profile: Some high-performance tires, particularly 200TW “competition” tires, feature “square” shoulders that measure wider than their stated section width. For instance, a 265/35R18 Federal 595RS-RR may measure closer to 275mm in actual width. This can affect fender clearance on aggressive fitments.

Where to Buy Tires

For purchasing tires, we highly recommend Tire Rack. Their prices are highly competitive, and their comprehensive network of recommended installers ensures you have a nearby expert for mounting and balancing. You can also ship directly to your installer for ultimate convenience.

For complete wheel fitment information including offset recommendations, brake clearance considerations, and real-world fitment examples, see our FK8 Civic Type R Wheel Guide.

For quick-reference wheel and tire combinations, consult the FK8 Wheel/Tire Combo Cheatsheet.