Pontiac Fiero Wheels and Rims

Pontiac Fiero Aftermarket Wheel Fitment

The Pontiac Fiero is the mid-engine, plastic-bodied two-seater Pontiac built from 1984 through 1988 on GM's purpose-built P-body platform. Element Wheels measures fitment on the 1984-1988 Fiero, which covers every trim from the base 2.5L Iron Duke through the Fiero GT 2.8L V6 performance variant and the 1988 Fiero Formula. Every Fiero in that range shares the same hub: 5x100 bolt pattern, 54.1mm hub bore, M12x1.5 lug thread, 5 lugs. The Fiero diameter window runs 13 to 18 inch. Pick the catalog row below.

Find Your Pontiac Fiero Generation

The 1984-1988 Fiero is the only generation Pontiac built. It ran on GM's P-body platform for its full five model year production life. Every body style (notchback coupe, fastback) and every trim from the base Fiero through SE, Sport, the Fiero GT with the 2.8L V6, and the 1988 Fiero Formula share the same hub. Production ended in 1988 when GM discontinued the platform.

The Pontiac Fiero Bolt Pattern

The 1984-1988 Fiero uses a 5x100 bolt pattern with a 54.1mm hub bore and an M12x1.5 lug thread. 5x100 is the small-car five-lug GM hub spec from the 1980s. The Fiero shares 5x100 with a long list of later compact and sports platforms, including the Toyota Corolla, the Toyota Matrix and Pontiac Vibe, the Subaru WRX (older models), and the Scion FR-S / Toyota 86 / Subaru BRZ.

Important distinction: bolt pattern matches across those platforms, but hub bore does not. The Fiero hub bore is 54.1mm. Subaru WRX and Toyota 86 / Subaru BRZ run a 56.1mm hub bore. Toyota Matrix and Pontiac Vibe share the Fiero's 54.1mm hub bore exactly. A 5x100 wheel built for a Subaru with a 56.1mm bore can be hub centered on a Fiero with rings, but a 5x100 wheel with a smaller-than-54.1mm bore will not seat on the Fiero hub at all. The 5x4.5 imperial nickname refers only to 5x114.3, not 5x100, so don't confuse the Fiero's metric 5x100 with the 5x114.3 used on Mustangs, Civics, and many Japanese rear drive platforms. Compare across the rest of the Pontiac lineup at our Pontiac wheels and rims hub.

Why Fiero Fitment Is Stable Across Every Trim

The Fiero kept the same hub geometry across every trim and every model year. The base 1984 Fiero with the 2.5L Iron Duke four cylinder, the 1985-1988 Fiero SE, the 1985-1988 Fiero GT with the 2.8L V6, and the 1988 Fiero Formula all share the same 5x100 bolt pattern, 54.1mm hub bore, M12x1.5 lug thread, and brake package on the catalog. The GT and Formula differ from the base car in engine, suspension tuning, and trim, not in wheel fitment. A wheel that fits a 1985 base Fiero also fits a 1985 Fiero GT and a 1988 Fiero Formula.

The diameter window we measure on the Fiero runs 13 inch on the low end up to 18 inch on the show-build end. The factory Fiero shipped with 13 and 14 inch wheels depending on year and trim, and the 1987-1988 GT moved up to 15 inch from the factory. 15 to 17 inch is the most common Fiero aftermarket choice for street builds today. 18 inch is the upper limit on this platform, and runs best with a thin sidewall tire and careful offset selection to clear the factory strut and fender. The Fiero is square fitment, same width front and rear in our measured range (5.5 to 8 inch). We measure each variant directly so the catalog reflects what actually clears the fender and the brake on this mid-engine layout, not just what the spec sheet implies.

Every wheel we recommend is backed by our Fitment Guarantee. If a wheel does not fit, we pick up the wheels and refund 100 percent. No risk to you.

How We Confirm Fitment on Pontiac Fiero Wheels

Element Wheels measures fitment on the Fiero directly, across the base 2.5L car, the SE, the GT with the 2.8L V6, and the 1988 Formula. For the Fiero that means hub bore confirmation at 54.1mm, clearance from the wheel to the fender on a stock-height car, gap between the back of the wheel and the front strut tower (the Fiero's front trunk layout makes this tight), brake caliper height at the small-platform spec, lug seat depth, and lug thread confirmation at M12x1.5. At our fitment facility in Chandler, Arizona, the Element Wheels team measures directly on the physical platforms we support. We don't pull specs from manufacturer sheets the way most retailers do.

Pontiac Fiero Wheels and Rims FAQ

Get Pontiac Fiero Wheels Right the First Time

Pick the catalog row above to see wheels and rims that fit. We measure on the 1984-1988 Fiero across the base trim, SE, Sport, the Fiero GT with the 2.8L V6, and the 1988 Formula. The 5x100 / 54.1mm hub spec carries across all four model years and every trim. Find your fit and start enjoying your build sooner.