The Short Version
- The Alto and the Suzuki Kei are 4×100 on 54 mm, every generation, no exceptions.
- The first-generation Lapin is 60 mm. One generation, out on its own.
- From the HE22S onward the Lapin joins everything else at 54 mm.
- The Alto Works is on the base car’s hub.
The Lapin Anomaly
We would not normally lead an article with a single generation of a kei car. This one earns it, because it contradicts the rule everybody uses.
| Chassis | Period | Wheel | PCD / Holes / Bore | Rows |
|---|---|---|---|---|
| HE21S | 2003.09–2008.11 | 4J×13 +45 | 100 / 4 / 60 | 113 |
| HE22S | 2008.11–2015 | 4.5J×14 +45 | 100 / 4 / 54 | 63 |
| HE33S | 2015–2022 | 4.5J×14 +45 | 100 / 4 / 54 | 154 |
| HE93S (Lapin LC) | 2022– | 4.5J×14 +45 | 100 / 4 / 54 | 10 |
A hundred and thirteen rows at 60 mm. This is not one stray cell — it is the entire first generation.
We cross-checked the ordinary Alto over the same 2003–2008 window, and its HA24S and HA25S rows all read 54 mm. So this is not an era-wide recording quirk affecting all Suzuki kei cars of the period. The Lapin specifically differs from its own platform-mate.
We could not corroborate it on a second database — the other site carries only current-generation models for each nameplate. So this rests on one source, verified by reading the rows directly rather than trusting an aggregate. If you own an HE21S Lapin, measure the hub before buying wheels; it is the single most useful thing you can do here. Our hub bore reference covers the method.
Everything Else Is Simple
The Alto is 4×100 on 54 mm across every chassis prefix on its page — E, GF, TA, UA, CBA, DBA, ABA, LA, 5AA, 3BA, 5BA — from the earliest listed grades through the current HA36S and HA37S. No split anywhere.
The Suzuki Kei (HN11S, HN12S, HN21S, HN22S) is the same: 4×100 / 54 mm, unchanged across its run.
The Alto Works Gets Wheels, Not a Hub
The Alto Works has its own page in the database, which invites the assumption that it is mechanically separate. On fitment, it is not.
Every Works chassis — CN21S, CP21S, CR22S, CS22S, HA11S, HA21S, HA12S, HA22S, HA36S — returns the same 4×100 / 54 mm as the ordinary Alto. What differs is wheel size: the current HA36S Works runs 4.5J×15 at +45 against the ordinary Alto’s smaller 13-inch fitment.
So ordinary Alto wheels bolt to a Works and vice versa. The Works wheels are simply a size up.
Buying
For anything except an HE21S Lapin, 4×100 on 54 mm is the standard Suzuki and Daihatsu kei fitment, and wheels are abundant.
Two checks:
- Honda and Mitsubishi kei cars use 56 mm. Those wheels bolt on and sit loose.
- The HE21S Lapin at 60 mm is looser still on a 54 mm car — six millimetres — and a 54 mm wheel will not go on an HE21S at all. Given how much cheap Suzuki kei wheel stock circulates without a stated bore, this is a real trap in both directions.
Importing
The Alto has been in production since 1979 and early cars are long past 25 years, though the database’s coverage does not reach the oldest ones. The Lapin launched in September 2003, so first-generation cars become eligible for US import from 2028. The Suzuki Kei ran 1998 to 2009 and is eligible now.
The Lapin is the one people want — a deliberately square, retro-styled kei car with a rabbit motif, sold almost entirely to women in Japan and now increasingly to enthusiasts everywhere else.
What We Could Not Verify
- The HE21S Lapin’s 60 mm bore against a second database. The other source carries only current-generation models. Verified by direct row inspection on one source.
- Kei Sport, Kei Works, Lapin Chocolat, Alto Van and Alto Eco pages, which we did not open individually.
- Whether the earliest Alto generations are covered at all — the page’s date range starts later than the model does.