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1999 Mazda RX7 (FD) Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Mazda RX7 (FD) wheels? This page gives the 1999 Mazda RX7 (FD) bolt pattern (5x114.3), centre bore, factory rim size and the offset range for aftermarket and forged Mazda RX7 (FD) rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Quick answer: The 1999 Mazda RX7 (FD) uses a 5x114.3 bolt pattern with a 67.1 mm centre bore and M12x1.5 lug nuts. Factory wheels: 16x8J ET60. For aftermarket wheels, 18x9J ET35 front / 18x10J ET35 rear sits flush.
Forged wheels for the 1999 Mazda RX7 (FD) — drilled 5x114.3 with a 67.1 mm centre bore, built to the offset you choose. From $220 per wheel, made to order in 20–25 days.
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Mazda RX7 (FD) (1999): 5x114.3 bolt pattern, 67.1mm center bore, OE 16x8J ET60. Forged wheel fitment specs from ANKUSI.
Bolt Pattern5x114.3
Wheel Bolt/NutM12x1.5 Nut
Center Bore67.1mm
Wheel Load Rating700–850 kg/wheel (Performance / Sports Car segment reference)
Year1999
Category5-Lug Performance / Tuner
✓ Data check: the bolt pattern and center bore on this page match an independent fitment reference. Last reviewed September 18, 2026. How we verify
Wheel Size & Offset at a Glance
| Configuration | Wheel Size & Offset |
|---|---|
| Factory (OE) | 16x8J ET60 |
| Flush Fitment | F 18x9J ET35 / R 18x10J ET35 |
Forged Wheel Designs for the Mazda RX7 (FD)
Every design below is forged to order, so it can be machined to the Mazda RX7 (FD)'s 5x114.3 bolt pattern and 67.1 mm center bore, with the width and offset calculated for your setup.
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How to Read Wheel Offset & Measurements
Use these two references before ordering: the left diagram shows where each spec (PCD, center bore, offset, width and diameter) is measured on the wheel; the right diagram shows how positive, zero and negative offset shift the wheel face relative to the hub centerline.
ANKUSI Engineering Expert Advice
A sedan's wheel spec is a balance point the factory tuned between ride comfort, steering feel, and everyday durability. Forging lets us hold that same structural margin while cutting rotational mass, which is where most of the real-world benefit — quicker steering response, marginally better ride — actually comes from.
The Mazda RX7 (FD) ships from the factory on a 5x114.3 bolt pattern with a 67.1mm center bore and a 16x8J ET60 wheel. Our flush reference for the Mazda RX7 (FD) is F 18x9J ET35 / R 18x10J ET35.; our maximum aggressive reference is F 18x9.5J ET30 / R 18x10.5J ET30. — beyond that, expect clearance issues against the fender liner without further modification.
Mazda RX7 (FD) OE Wheel Specs
The Mazda RX7 (FD) ships from the factory on 5x114.3 bolt pattern wheels with a 67.1mm center bore. The stock wheel size is 16x8J ET60, offering a balanced ride that suits most owners without any rubbing or clearance concerns.
Why the factory spec works for most owners:
- Balances ride comfort with steering response and highway efficiency.
- Wide tire and wheel availability at the factory diameter keeps replacement costs low.
- Lower unsprung weight than larger aftermarket wheels helps ride quality and acceleration.
- Guaranteed clearance against brake calipers and suspension components.
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the Mazda RX7 (FD) (1999) we drill the 5x114.3 pattern and cut the centre bore to 67.1mm on our own CNC line, so the wheel hub-centres on the car with no spacer rings, in whatever diameter, width and offset you specify.
Converting these ET figures to backspacing? Use the wheel offset and backspacing calculator.
The figures on this page are part of our open wheel fitment dataset — 10,093 vehicles, free to download, CC BY 4.0.
Offset and Backspacing: Factory Wheel vs Options
Backspacing ≈ width/2 + ET/25.4 + 0.5 in. "Inward" means closer to the suspension; "outward" means closer to the fender lip.
| Setup | Size | ET | Backspacing | Inward vs OE | Outward vs OE |
|---|---|---|---|---|---|
| Factory (OE) | 16x8J | ET60 | 6.86 in (174 mm) | — | — |
| Flush | 18x9J | ET35 | 6.38 in (162 mm) | −12 mm | +38 mm |
| Maximum | 18x9.5J | ET30 | 6.43 in (163 mm) | −11 mm | +49 mm |
Vehicles With the Same Hub as the Mazda RX7 (FD) (5x114.3, 67.1 mm Bore)
In our database, 456 other vehicle entries from 30 makes use exactly the same 5x114.3 bolt pattern and 67.1 mm center bore. Factory wheels from these cars bolt on and center on the hub without rings; offset and width still have to be checked.
5x114.3 is used by 20.0% of the vehicle pages in our English fitment guide (1,300 of 6,503); 35.2% of those also use a 67.1 mm center bore.
Hub-Centric Rings for a 67.1 mm Center Bore
A wheel with a center bore larger than 67.1 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 70.1 mm | 70.1 → 67.1 mm |
| 70.5 mm | 70.5 → 67.1 mm |
| 71.6 mm | 71.6 → 67.1 mm |
| 72.6 mm | 72.6 → 67.1 mm |
| 73.1 mm | 73.1 → 67.1 mm |
ANKUSI forged wheels are bored to exactly 67.1 mm for this vehicle, so no ring is needed.
Frequently Asked Questions
What bolt pattern (PCD) does the Mazda RX7 (FD) use?
The 1999 Mazda RX7 (FD) uses a 5x114.3 bolt pattern.
How many lug bolts does the Mazda RX7 (FD) use?
The Mazda RX7 (FD) uses a 5-lug bolt pattern (5x114.3), so you need a 5-lug forged wheel to bolt straight on.
What is the center bore size on the Mazda RX7 (FD)?
The Mazda RX7 (FD)'s center bore is 67.1mm. If an aftermarket wheel has a larger center bore than this, hub-centric rings are recommended so the wheel centers on the hub itself rather than relying on the lug bolts alone.
What size are the factory (stock) wheels on the Mazda RX7 (FD)?
Factory wheels on the Mazda RX7 (FD) are 16x8J ET60.
What does a flush wheel fitment look like on the Mazda RX7 (FD)?
For a flush look with minimal to no rubbing, we recommend F 18x9J ET35 / R 18x10J ET35 as a starting point on a stock or mildly lowered Mazda RX7 (FD).
Do I need wheel spacers for my Mazda RX7 (FD)?
No. ANKUSI forges each wheel to your exact target offset, including the flush or max specs above, so you get the correct fitment without stacking spacers. Spacers are typically only used to push out an existing OE-offset wheel without replacing it, which isn't necessary when you're ordering a custom-offset forged wheel.
How do I calculate wheel backspacing for my Mazda RX7 (FD)?
Backspacing (in inches) = wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance). For example, the flush spec above works out to roughly 6.38" backspacing up front and 6.88" in the rear.
What's the difference between wheel offset and backspacing?
Offset is the distance in millimeters from the wheel's true centerline to its mounting face (positive offset pulls the wheel in, negative pushes it out). Backspacing is the distance in inches from the mounting face to the back edge of the wheel barrel. They describe the same fitment from two different reference points, which is why ANKUSI lists both above — some shops and tuning guides quote offset, others quote backspacing.
Can I run staggered wheels (different sizes front and rear) on my Mazda RX7 (FD)?
Yes — the Mazda RX7 (FD)'s factory and our recommended flush/max fitments already use staggered sizing (different width front and rear), and ANKUSI can forge matching staggered sets to your target offsets.
Sources and Last Update
Data checked against: avtoreference.com.
This record is part of the open ANKUSI Wheel Fitment Dataset (DOI 10.5281/zenodo.23241521, CC BY 4.0).
Other cars on the same factory size: 16x8 wheels · 16 inch wheels.
Compiled by the ANKUSI Wheels engineering team, an IATF 16949 and ISO 9001 certified forged wheel factory in Guangzhou.