How to choose the correct wheel size for your car.
When choosing a wheel size, the most important things to look out for will be these 4 factors. The PCD of the wheel, the diameter of the wheel, the width of the wheel, and the offset of the wheel. These factors will determine if a wheel can fit your car.

Firstly, the PCD of a wheel is the diameter of the circle which passes through the centre of all of the wheel stud holes. For example, a PCD of 5×114.3 means that there are 5 holes and that the diameter of the circle which passes through the centre of all of the wheel stud holes will be 114.3mm. For most manufacturers, they will usually stick to 1 or 2 PCD fitments among their entire vehicle range so make sure not to choose the wrong PCD when buying a wheel.
Secondly, the diameter of the wheel is the distance from one side of the wheel to the other through the center point of the wheel.
Thirdly, the width of the wheel would be the distance from the bead seat to the other bead seat.
For the wheel diameter and width, if a wheel is 18×8.0J for example, it would mean that the wheel is 18 inches in diameter and 8 inches in width.
And finally, the offset of the wheel is the distance from the hub mounting surface to the center line of the wheel. If the offset is ET35, it means that the hub mounting surface is 35mm away from the wheel’s center line and is closer to the outside of the wheel.

Wheel manufacturing methods.
Not all wheels are created equally, there are different methods used to create wheels depending on what they are used for. There are mainly two types of wheels and they are forged wheels and cast wheels. Under cast wheels there are also different methods used to make cast wheels.

Forged wheels are made by essentially using a huge amount of force to shape the wheel. Doing so can produce a wheel that is stronger than cast wheels as the internal grain of the wheel is deformed and rearranged to the shape of the wheel. This improves the strength of the wheel and results in a lighter wheel but also results in the prices of forged wheels being very expensive.

Cast wheels on the other hand are cheaper but for most of them, having a lighter cast wheel would mean sacrificing the strength of the wheel and vice versa. This is good if you want a wheel that just looks good at an affordable price as compared to forged wheels that are mainly used for track racing. They are manufactured by heating the metal to liquid form, and then pouring the molten metal into a mould.

SSR does not only make forged wheels, they also make some of their wheels using a method called “Flow Forming”. It is the superior method for cast wheels and it is essentially a cast wheel that is heated and spun with steel rollers pressing on the rim to achieve the desired shape. This creates a wheel that is affordable like cast wheels but have properties similar to forged wheels.

Consequences of getting replica wheels and why you should get genuine SSR wheels.
As SSR is a world renowned brand, there are bound to be replicas made for those who want SSR wheels but are not willing to spend the money. The price of these replica wheels are tempting but there are many risks involved with using replica wheels. The biggest factor that makes replica wheels risky is the manufacturing quality and method used to make them.
Most of them have also never undergone stringent testing, which means that the quality of these wheels are very poor and are more susceptible to cracking when faced with sudden big impacts and can cause accidents.
SSR wheels have been developed using their experience in Motorsports. As a wheel supplier for races such as the Super GT GT500, the GT300 and the Super Taikyu, they have to be able to create high quality wheels that will not only be light, but able to withstand the stress placed on them. Therefore, you can be assured that SSR wheels are manufactured with the highest of standards.