The FK8 and FL5 Civic Type R and the DE5 Acura Integra Type S share the same wheel fitment, and the real decision for most owners isn't width or stagger. It's diameter: stay at 19 inches for the street, or step down to 18 for the track.
Why both setups are square
On a front-wheel-drive car, the front tires steer, brake and put down all of the power. Staggered widths add nothing, so both of our recommended setups run the same 9.5-inch width at ET45 on all four corners. Square also lets you rotate tires front to rear, which extends tire life and keeps grip balanced.
The 19-inch street setup
The FL5 leaves the factory on 19x9.5 wheels, so a 19x9.5 ET45 keeps the stock rolling diameter, ride height, speedometer calibration and ABS sensor accuracy. The factory-spec tire is 265/30R19. If you want a taller sidewall for ride quality and pothole protection, 255/35R19 is the alternative.
The gain here is weight. A forged 19x9.5 can come in under 19 lbs, compared with the FL5's 22 lb factory forged wheel. That's about 3 lbs saved per corner, and you feel it in the car's turn-in.
The 18-inch track setup
For HPDE, time attack and autocross, 18x9.5 ET45 is the setup we recommend. The smaller diameter cuts unsprung and rotational mass, and a 35-series sidewall is more compliant than the 30-series you run at 19 inches, so the front end stays settled over mid-corner bumps and curbs. It also opens up 265/35R18 and, for more aggressive track use, 275/35R18. That extra width gives the front tires a bigger contact patch when they're braking, steering and putting down power at the same time. A forged 18x9.5 can weigh under 17 lbs.
One check before you order: confirm spoke clearance with the factory Brembo front calipers. Our GT-02 and GT-03 designs clear with the right spoke geometry.
| Setup | Wheel (all four) | Tire options | Forged weight | Best for |
|---|---|---|---|---|
| 19" Street | 19x9.5 ET45 | 265/30R19 (factory spec) or 255/35R19 | Under 19 lbs | Daily driving, street |
| 18" Track | 18x9.5 ET45 | 265/35R18 or 275/35R18 | Under 17 lbs | HPDE, time attack, autocross |
Don't chase a lower offset
Whichever diameter you pick, keep the offset high. ET42 to ET48 is the safe range. Below ET38 you risk the tire contacting the inner fender liner at full steering lock, and pushing the contact patch outward increases scrub radius, which brings torque steer and steering kickback under hard acceleration.
Specs that stay the same
- Bolt pattern: 5x120
- Center bore: 64.1mm
- Seat type: conical
- Lug torque: 108 Nm (80 ft-lb)
Standard Civics use 5x114.3, so don't cross-shop wheels between a regular Civic and a Type R or Type S.
Which one?
If the car spends most of its time on the street, 19x9.5 ET45 keeps everything Honda calibrated and still takes weight off each corner. If it sees regular track days, an 18x9.5 ET45 set on 200TW tires is the better tool for the job.