Will 15x8 +28 wheel (4x100), e.g. Enkei RPF1, with 205/50R15 fit a Mazda Miata NA (1990-1997)?
Short answer: Yes, reportedly. Reported
Yes, reportedly: A 15x8 +28 (the Enkei RPF1 size) is the slightly more conservative cousin of the popular 15x8 +25: it sits 3 mm further inboard.
| Part | 15x8 +28 wheel (4x100), e.g. Enkei RPF1, with 205/50R15 |
|---|---|
| Vehicle | Mazda Miata NA (1990-1997) |
| Years | 1990-1997 |
| Trim / condition | 205/50R15; stock suspension or mild drop; roll the fender lips if lowered or on coilovers |
| Verdict | Reported to fit |
| Confidence | 2 of 3 — Stated by one reasonably reputable source (retailer, shop, magazine). Not independently confirmed. |
| Last verified | 2026-10-23 (date the cited sources were last read) |
Details
A 15x8 +28 (the Enkei RPF1 size) is the slightly more conservative cousin of the popular 15x8 +25: it sits 3 mm further inboard. A wheel guide lists it for 205/50R15 or 225/45R15 on an NA and says it may avoid fender rolling at stock height, with about -1.5 degrees of camber and a roll recommended once lowered. On a turbo-Miata forum the founder of a Miata wheel company says it is fine on stock shocks, while an NA owner calls it tight on an NA and says even a light lip roll helps a lot; his 225s rub on big bumps. Reddit replies are split on whether an unrolled 1990 car needs a roll. Bump travel, not static ride height, decides rubbing, so coilovers that allow more compression make contact more likely. Not every 205/50 is the same width; a parts vendor notes 200-treadwear tires suit an 8-inch rim better than all-seasons.
Specs
- size: 15x8
- offset mm: 28
- bolt pattern: 4x100
- typical tire: 205/50R15 (225/45R15 on track cars)
- vs wheel 15x8 25: sits 3 mm further in
Other wheels fitment for the NA
- NB factory wheels (4x100) — Reported to fit
- 15x7 +38 wheel with 205/50R15 tire — Reported to fit
- 15x9 +36 wheel with 225/45R15 tire — Fits with extra parts or work
- OEM NA wheel (14x5.5 or 15x6, +45) — Specification
- 15x8 +25 wheel (4x100) with 205/50R15 tire — Fits with extra parts or work
- NC Miata (2006-2015) factory or NC-fitment wheels — Does not fit
This part on other generations
- Mazda Miata NB (1999-2005 US model years) — Reported to fit
More for this car
- All Mazda Miata NA (1990-1997) fitment answers · NA common problems
- Guide: Miata NA/NB hardtop fitment guide: NA vs NB, OEM vs aftermarket, latches and seals
- Guide: Miata NA/NB wheel fitment guide: bolt pattern, offsets, 15x8 sizes and brake clearance
- Newsletter archive: past issues with every new and corrected entry
Sources
- 1990-1997 NA Mazda Miata Wheel and Tire Combo Guide — rimlist (wheel listings and guides; contains affiliate links) (vendor article; read 2026-10-21; full page read)
- Enkei RPF1 15x8 +28 fit TEMPORARILY under stock fenders? — Miata Turbo Forum (2023-24; includes a reply from the founder of 949 Racing) (forum thread; read 2026-10-23; full page read)
- Will 15x8+28 on 205/50/R15 fit on completely stock setup? — r/Miata (2025 owner replies, mixed) (reddit; read 2026-10-23; search excerpt only)
- RPF1 15x8 +28 What Tire Size is Best Tire Size — MX-5 Miata Forum (includes a reply from Good-Win Racing, a Miata parts vendor) (forum thread; read 2026-10-23; search excerpt only)Tire-width advice for 8-inch rims.
Summaries are in our own words. Fitment is not guaranteed — disclaimer.
Report a correction — spotted an error or have a better source? Email hello@chassisdex.com.