The corrosion resistant consists of 3 steps. First a zinc phosphate bath for a good paint adhesion. Then a coating with an acrylic primer base. The third step is a silver powder coating.
The stud holes are beveled and uncoated for optimum clamp force.
The rims meets SAE J1204 standards
Specifications 13″ steel rims
Rim dimensions: 13″ x 4,5JJ
Bolt pattern: 4 holes with bolt-circle diameter 4″
Wheel bolt size: ½”-20
Pilot diameter: 2,65″
Capacity: 1660 Lbs
Offset: 0
silver powder coating
Specifications 14″ steel rims
Rim dimensions: 14″ x 5,5JJ
Bolt pattern: 5 holes with bolt-circle diameter 4½”
Wheel bolt size: ½”-20
Pilot diameter: 3,19″
Capacity: 2040 Lbs
Offset: 0
silver powder coating
Specifications 15″ steel rims
Rim dimensions: 15″ x 6JJ
Bolt pattern: 5 holes with bolt-circle diameter 4½”
Wheel bolt size: ½”-20
Pilot diameter: 3,19″
Capacity: 2150 Lbs
Offset: 0
silver powder coating
Specifications 16″ steel rims
Rim dimensions: 16″ x 6K
Bolt pattern: 6 holes with bolt-circle diameter 5½”