Know your track width.
Angle kits that add track width move the wheel outward. Kits such as the FDF Mini do not add track width and can allow a more aggressive wheel. Check your exact kit and bodywork together.
THE DETAILS MAKE THE DIFFERENCE.
Find your fit.
Keep your style.
Start with the wheel. Match it to your bodywork, brakes and suspension. Here’s a closer look at the setups behind the FF6, FF6-TA and FF3.
Every build is different. Use these setups as starting points, then confirm clearance for your bodywork, brakes and suspension before ordering.
18-INCH LINEUP / OFFSETS IN MMBEFORE YOU CHOOSE
Your whole setup matters.
Leave room to move.
Low ride height, tire shape and camber all change clearance. Check through steering lock and suspension travel. The same labeled tire size can fit differently between tire models.
Check the complete package.
Wheel diameter alone does not confirm brake clearance. Verify your caliper, rotor and wheel specification. Spacer figures below describe particular setups; they are not a universal prescription.
01 / THE ORIGINAL SIX-SPOKE
FF6
Four sizes. From narrowbody drift setups
to grip-focused track builds.
NARROWBODY / DRIFT
18×8.5 +35
For stock narrowbody C5 and C6 builds with an angle kit that does not increase track width.
- Typical setups have room; very low ride heights can bring the outer fender into play.
- Track-width-adding kits, including PBM knuckles, FDF Mega and the discussed Wisefab full-kit or narrow-kit-with-knuckles configurations, can put the wheel 10–15 mm, and in some setups 25–30 mm, outside narrowbody fenders. Wider bodywork is needed to cover the tire; an intentionally exposed drift setup leaves the tire outside the fender. Neither approach establishes universal clearance or road legality.
- Tire options for FF6 18×8.5 +35: 225/40 or 235/40. Verify clearance at your ride height and through steering and suspension travel.
WIDEBODY / DRIFT
18×9 +15
A front steer-wheel option for widebody C5 and C6 builds with an angle kit. It can be used front or rear when the setup suits.
- With track-width-adding angle kits, the wheel can sit under widebody fenders. A small spacer may be needed for the desired position.
- Compatible with C6/C7 Grand Sport and Z06 calipers, including the previously noted C7 Z51 application. On C7 Grand Sport/Z06 bodywork, a spacer is needed to sit flush with the fender unless the angle kit adds track width. This is a fender-position note, not a blanket spacer requirement for brake clearance; verify the exact brake package.
- Tire options for FF6 18×9 +15: 235/40, 255/35, 265/35, 255/40 and 265/40. A 235/40 is commonly used up front; 255- or 265-width tires are commonly used at the rear, depending on the build and intended use. Confirm clearance for your exact tire, suspension, bodywork and ride height.
FF6. At home on track.
Gold finish shown. Product finish: gunmetal / polished lip.Photo: Alex Swank
REAR / DRIFT
18×9.5 +35
Primarily a drift-rear fitment, with room for larger brake packages.
- Compatible setups include C7 Grand Sport and Z06 brakes. Other brake combinations still need verification.
- On C7 rear and widebody applications, a 15–25 mm spacer is a setup-specific starting point; wider bodywork may change that.
- Suggested rear tire widths: 255 or 265. Aspect ratio and final tire selection depend on the build.
NARROWBODY / GRIP + TRACK
18×11 +54
A narrowbody grip fitment for both coilover and stock leaf-spring setups.
- Tire options include 275/35R18 and 295-width tires. Confirm the full tire specification for your car.
- Negative camber helps tuck the tire. Less than 1° of negative camber can leave the tire extending beyond the fender.
- Confirmed brake combination: FF6 18×11 +54 with AP Racing Pro 5000 six-piston calipers and 372 mm rotors. This confirmation applies to that wheel and brake combination only; it does not confirm FF6-TA fitment.
Have a setup that falls between these examples?
02 / TIME ATTACK
FF6-TA
Square narrowbody or staggered widebody.
Choose the starting point for your build.
NARROWBODY / SQUARE
18×11 +54
Front + rear
A square fitment for stock narrowbody C5, C6 and C7 Corvettes.
- Same wheel size at all four corners.
- Tire starting point: 275/35R18. For 285- or 295-width options, confirm the final aspect ratio and clearance.
- Confirm ride height, alignment and brake package for your particular car.
WIDEBODY / STAGGERED
18×11 +38 Front
18×12.5 +54 Rear
A staggered combination for widebody C5–C7 Corvette builds, including setups retaining stock leaf springs and lowering bolts.
- Front tire widths: 285–295, or up to 315/30 where clearance allows.
- Rear tires: up to 335/30 in compatible setups.
- With 315/30 fronts, contact with brake ducts and inner fender liners at full lock can reduce available steering angle.
- Tested C5 Carbon Creations widebody example: FF6-TA 18×11 +38 front fit flush at approximately −2° camber without spacers; the 18×12.5 +54 rear required a 20 mm spacer. These results apply to this tested setup, not every widebody C5–C7.
The wheel is one part of the package. Use the exact tire, suspension and brake notes for your setup.
Podium product render. Profile varies by specification.Need a second look at your brake or tire combination?
03 / THE TRI-SPOKE
FF3
An aggressive profile.
Plan the bodywork around it.
Widebody Corvette builds only.
The FF3 is not a stock narrowbody fitment for C5, C6 or C7 Corvettes. Its double-lip design also brings the spokes closer to the caliper, so brake clearance needs particular attention.
FRONT / LESS AGGRESSIVE18×8.5 −10
For smaller brake packages.
FRONT / AGGRESSIVE18×9 −15
Rear use depends on setup and spacing.
REAR18×9.5 +0
Position varies with bodywork and camber.
FF3 studio image shows the 5×114.3 version. Match the bolt pattern to your vehicle; the Corvette selection uses 5×120.65.
Track width changes the equation.
For reference, FF6 18×8.5 +35 sits flush on the discussed C5 with a Wisefab angle kit and 945 Garage front fenders. On that same car, FF3 18×8.5 −10 and 18×9 −15 would sit roughly 30–40 mm beyond the fender.
For aggressive FF3 fitments with PBM angle-and-knuckle kits, FDF Mega or full Wisefab kits, bodywork needs to extend 2–3 inches wider than stock C6 widebody bodywork. This requirement applies to those track-width-adding configurations, not every angle kit. FDF Mini and other kits that do not add track width use the separate setup examples below. Check the exact wheel, tire, suspension and bodywork together.
The discussed Wisefab configuration adds roughly 2 inches per side. This figure is specific to that configuration, not every Wisefab kit.
Three spokes. All presence.
Podium shop build. A styling reference, not a fitment guarantee.CORVETTE / C5Start with
Start with
your widebody.
With an FDF Mini or another kit that does not add track width, start with 18×9 −15 front and 18×9.5 +0 rear. The 18×8.5 −10 is a slightly less aggressive front option for smaller brakes.
C5 Carbon Creations widebody example
C5 Carbon Creations widebody example: FF3 18×9 −15 front without a spacer; 18×9.5 +0 rear with a 20–25 mm spacer to sit flush. The example’s bodywork is 2–3 inches wider per side than stock. These are FF3 specifications, separate from the FF6-TA tested setup.
Track Spec widebody example
On coilovers, without an angle kit or stock leaf springs, 18×9 −15 sits flush up front in this example. That same size at the rear uses a 10 mm spacer in the example. An 18×9.5 +0 rear is estimated to need about 20 mm; confirm before selecting a spacer.
CORVETTE / C6Ride height
Ride height
changes the fit.
Here, stock widebody means factory C6 Grand Sport/Z06 bodywork, not every stock C6. Very low ride height can create front-fender contact even with a narrow tire.
Drift setup example
A C6 Z06 with an FDF Mini, stock control arms and stock leaf springs was tested with 18×9 −15 fronts and 225/40 Falken 615 tires. It rubbed when nearly fully lowered; the source notes more than −4° camber was needed for front clearance at that ride height. Raising the car helps clearance but reduces camber gained from lowering. The described setup calls for aftermarket arms or a lockout kit to address this issue; verify the exact suspension configuration. Falken 615 tires run wide, so a narrower tire may improve fender clearance.
C6 rear FF3 18×9.5 +0 tire options: 255/35, 265/35, 255/40 and 265/40. In the described setup, the rear sits nearly flush at about −3° camber, with slight poke near zero camber on 255/35 Kenda tires. Tire model, alignment and ride height still affect clearance; this is not an alignment target or fitment guarantee.
CORVETTE / C7Check the spokes
Check the spokes
and the fenders.
Here, stock widebody means factory C7 Grand Sport/Z06 bodywork, not every stock C7. It is wide enough for the described setup unless the car is very low; check the brakes and fenders individually.
- Front fitment may require a spacer for spoke-to-caliper clearance.
- The 18×9.5 +0 rear may need a small spacer to achieve the desired position.
- Confirm exact body width, brakes and suspension; generation or trim alone is not sufficient.
NISSAN / SELECT BUILDSCustom fitment.
Custom fitment.
Extra planning.
Z31 and R32 GT-R builds require vehicle-specific verification. The examples below involve modified cars and do not establish bolt-on compatibility.
Z31 — separate front and rear fitment
Front, with Z32 Brembo front calipers: 18×9.5 +0 is the better-fitting option, sitting approximately ½–¾ inch outside the fender. Spoke-to-caliper clearance is close; a 2–3 mm slip-on spacer is recommended in this example. The source also describes shaved calipers as a modified example; this does not establish clearance on unmodified brakes. Check clearance rather than assuming it is bolt-on. The 18×9 −15 alternative clears the caliper but sits 1–1½ inches outside the fender and needs aggressive fender pulling/rolling, at least −3.5° to −4° camber and a stretched tire.
Rear: 18×9.5 +0 is also the better-fitting option. In the described aftermarket-suspension setup (coilovers and stock arms), it sits flush with minimal camber and minimal work. Rear 18×9 −15 remains aggressive and needs fender pulling and rolling. Do not transfer front spacer or brake-clearance notes to the rear.
R32 GT-R with R35 brakes
R32 GT-R with R35 GT-R brakes: the 18×9.5 +0 front clears the calipers and rotors in this example, but the back of the spokes is within approximately 1 mm of the caliper. A 3–5 mm slip-on spacer is recommended. More than −3.5° front camber is needed in the described setup; rears fit more easily and need less camber. Confirm the exact brake package, spoke clearance and fender clearance.
Building something different? Share the details if you’d like help.
YOUR BUILD. YOUR NEXT MOVE.