There's no single answer for the wheel lug pattern on a 1948 Pontiac. Pontiac used different patterns across their models that year. To know for sure, you
need the specific model of the 1948 Pontiac. Even then, some variations might exist due to optional equipment or regional differences.
You'll need to consult a 1948 Pontiac parts catalog, a restoration parts supplier specializing in that year, or a Pontiac enthusiast forum to find the correct information for your specific car. The vehicle identification number (VIN) would be extremely helpful.
