Change your wheels.
Keep your hardware.
Forged 6061-T6 wheels machined for your GR Corolla, with the lug seat cut to the one your car already has — so your factory studs and lug nuts carry over. No extended studs, no aftermarket nuts, no spacers to make a generic offset work.
PURPOSEFUL DESIGN. ONE LESS THING TO MODIFY.
- CONSTRUCTION
- Forged 6061-T6
- LUG SEAT
- Cut to your car
- WHEEL STUDS
- Your factory studs
- THE RESULT
- Wheels. Without the workaround.
A wheel upgrade. Not a hardware project.
The bolt pattern is only part of the fit. A lug nut seats on the wheel, and the shape of that seat has to match the shape of the nut — a tapered nut on a flat seat, or the reverse, is not a fit. Most aftermarket wheels are machined with one seat and sold to every car, which is why a new set so often arrives needing new lug nuts, and sometimes longer studs to get the thread engagement back.
We machine the seat to the car instead. That is the whole of the answer, and it is only available because every set is cut per order rather than pulled off a shelf: your hardware stays because the wheel was made for it.
| INTERFACE | A cataloguefitment | [J CURVE] Cut to your car |
|---|---|---|
| 01Lug seat | One seat, every car | Machined to yours |
| 02Lug nuts | New nuts to match the wheel | Your factory nuts |
| 03Studs | Longer studs may be needed | Your factory studs |
| 04Approach | Adapt the hardware | Design around it |
The seat is confirmed on the drawing before anything is cut, which is the point at which it stops being an intent. Spacers, modified hubs and non-factory studs or nuts change the conditions and need their own review.
01 / THE SEAT
Geometry comes first.
A lug nut seats on a taper or on a flat washer face. The wheel and the nut have to be the same one, and that is not something a bolt pattern tells you.
02 / THE ENGAGEMENT
The shank does a job.
The seat sets where the nut meets the stud, so changing it changes how much thread is actually engaged. That is the real reason extended studs exist.
03 / THE ANSWER
Keep the system together.
Cut the wheel around the connection the car already has and there is nothing to convert. Confirmed on a drawing before the first chip comes off.
Your car.
Your specification.
Three designs are built for the GR Corolla. Start with the wheel; the width, offset and seat are set per order against your car.
JCR / 01CUT TO YOUR CARMN-1
FORGED ALUMINIUMTen-spoke forged 6061-T6 monoblock, machined and finished to order for your fitment.
View specifications
JCR / 02CUT TO YOUR CARFauxrizo
FORGED ALUMINIUMForged 6061-T6 monoblock, machined and finished to order for your fitment.
Ask for it by name
JCR / 03CUT TO YOUR CARLL
FORGED ALUMINIUMForged 6061-T6 monoblock, machined and finished to order for your fitment.
Ask for it by name
MONOCHROME PRODUCT VIEWS / SEE EACH WHEEL FOR AVAILABLE FINISHES.
7 more designs are forged to order the same way, for other cars. G-12 Beadlock, Spec Miata, Pirate, P-Star, 6-Spoke, Rally, Petal. Tell us the car and we cut to it.
BUILT FOR THE DRIVE / STREET + CIRCUIT
The details matter.
So does the drive.
Forged wheels for people who use them.
Why do aftermarket wheels so often need new lug nuts?
Because the nut seats on the wheel, and the shape of that seat has to match the shape of the nut. Most wheels are machined with one seat and sold to every car, so if it is not the seat your nuts are made for, you need nuts that are — and depending on the combination, studs long enough to keep full thread engagement.
Can I keep my factory lug nuts and studs?
That is what the wheel is built to do. The seat is machined to your car's rather than to a catalogue standard, so there is nothing to convert. We confirm it on the drawing before anything is cut, which means it is checked against your car rather than assumed.
Does this apply to every J Curve wheel?
It applies to any set we cut for a known car, which is every set we make — nothing here is an off-the-shelf item. What changes between designs is the face, not the approach to the connection.
What if I run spacers or a modified setup?
Spacers, modified hubs and non-factory studs or nuts change the conditions and get their own review. Send the model year, the width and offset you are after, the tyre and the modifications, and we will go through the combination with you before anything is quoted.
How long does it take?
8–12 weeks from approval of the drawing.
Where do I choose size, finish and price?
On the wheel's own page where there is one, and through an inquiry for anything that is not a standard configuration. Sizes and offsets are set per order against your car either way.
YOUR NEXT SET STARTS HERE.