In short, the stock wheel size for the 2012 Honda Civic Si is 17 inches in diameter, with 7-inch width, paired with 215/45R17 tires. This setup applies to both the sedan and coupe versions in the U.S. market.
Wheel specifications for the 2012 Civic Si
The following details describe the official wheel and tire specifications for the 2012 Civic Si, which were used on both body styles in the United States.
Before listing the specifications, note that the numbers below reflect the factory configuration commonly found on U.S.-market cars.
- Wheel size: 17x7 inches (diameter x width)
- Tire size: 215/45R17
- Bolt pattern (PCD): 5x114.3 mm
- Center bore: 64.1 mm
- Wheel offset: ET50 (+50 mm)
- Lug nuts: M12 x 1.5, conical-seat
The combination of 17x7 wheels and 215/45R17 tires, along with the 5x114.3 bolt pattern and ET50 offset, is what ensures proper fitment, handling, and brake clearance for the 2012 Civic Si.
Body style notes
There is no wheel-size difference between the 2012 Civic Si sedan and the Civic Si coupe in the U.S. market; both body styles share the same 17x7-inch wheels and 215/45R17 tires as standard equipment.
Replacement and fitment considerations
When replacing wheels, ensure the replacement matches the 5x114.3 bolt pattern, 64.1 mm hub bore, and ET50 offset. Using wheels with a different offset or diameter can affect braking clearance, steering feel, and overall safety. Always verify compatibility with your specific VIN and consult a professional if unsure.
Summary
The 2012 Honda Civic Si runs on 17x7-inch alloy wheels with 215/45R17 tires, a 5x114.3 mm bolt pattern, 64.1 mm hub bore, and +50 mm offset. This setup applies to both sedan and coupe versions in the U.S. market. For any wheel replacement, matching these specifications is essential for proper fitment and performance.