Honda Acty — Tires & Wheels

Stock sizes, aftermarket options, wheel adapters, and lug nut specs.

Stock Specifications

Tire Size

145/R12 6PR LT

Wheel / Rim Size (Steel)

12 × 3.5B

Wheel / Rim Size (Alloy)

12 × 3.5J

Bolt Pattern

4 × 100 mm

Hub Bore

67.1 mm

Lug Nut Thread

M12 × 1.5

Lug Nut Seat

60° conical (tapered)

Lug Nut Torque

65–80 ft·lb (88–108 N·m)

Tire Pressure (standard)

26 psi front / 29 psi rear

Tire Pressure (loaded)

29 psi front / 34 psi rear

Note:Always use loaded tire pressures when carrying any significant payload. The rear axle of the Acty carries the engine weight, transmission, and any bed cargo — underinflation at the rear is a common cause of premature tire wear and handling instability.

Aftermarket Tire Options

145/R12 LT tires are a niche size in the US market but are available through major online retailers and some specialty tire shops. The three most commonly recommended options in the owner community are:

145/R12 LT Tire Options

Brand	Part Number	Notes / Info
Nankang	CX668 145/R12 LT	Most popular US choice — good all-season compound, affordable
Bridgestone	604V 145/R12 LT	JDM market original — very good quality
Sun F	A/T 145/R12 LT	Off-road oriented all-terrain — recommended for farm/trail use

Wheel Adapters

The stock 4×100 bolt pattern limits wheel selection significantly. Many owners install a 4×100 to 4×114.3 wheel adapter, which opens up a much wider range of compact Japanese and domestic wheels. This is especially useful when looking for taller 12-inch or 13-inch aftermarket options with more aggressive tread patterns.

Wheel Bolt Pattern Adapters

Brand	Part Number	Notes / Info
Gorilla / Various	4×100 to 4×114.3	25mm–40mm spacer adapter — allows use of common JDM/US 4-lug wheels

Warning:Wheel adapters effectively act as spacers, increasing wheel offset and changing the suspension geometry. Use adapters with hub-centric rings if the adapter's bore does not match the Acty's 67.1 mm hub bore. Lug-centric adapters (centered only by the lug nuts) can develop vibration over time. Have the wheels re-torqued after the first 50–100 miles following any adapter installation.

Lug Nuts

Lug Nut Specification

Brand	Part Number	Notes / Info
McGard / Various	M12×1.5 Conical	60° conical seat — standard for Acty OEM wheels

The OEM lug nuts use a 60° conical (tapered) seat. This is the most common type in the Japanese market. Aftermarket wheels designed for the US market sometimes use a ball seat (spherical) lug nut — always match the seat type to the wheel's lug hole design. Using the wrong seat type can cause the nut to contact only at a small point, risking loosening or stud damage.

Notes on Tire Size

The Acty's wheel wells have very limited clearance. Tires significantly taller or wider than the stock 145/R12 will rub on the body or suspension at full lock or full droop. Some owners have successfully run 155/R12 with a lift kit installed, but verify clearance before committing — rubbing at speed or during tight turns can cause sudden tire failure.