Stock rims are factory fitted rims that get delivered together with the car. They are also known as Original Equipment Manufacturer (OEM) rims. In Singapore, stock rims vary depending on the car model and the level of upgrade the buyer gets from the dealer.
For the entry level, factory fitted rims are usually steel wheels. These are heavy but sturdy. They are easy to maintain and do not require careful treatment when washing or maintaining them. They may be painted and would usually come with decorative hubcaps to cover the plain steel wheels. For upgraded wheels package, car dealers would provide alloy wheels. They are lighter and stronger but do require more maintenance and care.
OEM wheels are specifically designed to fit your car. It takes into consideration the required rolling radius or rolling circumference in order for the speedometer to give accurate readings. The bolt pattern, bolt spacing, rims offset, and wheel width are also specific to your car’s make and model.
When replacing your stock rims with aftermarket rims, make sure you find rims with the right specifications that will fit your car.