FAQ Wheels

Q. What are the biggest wheels I can fit on my car?
A. Refer to our Technical Articles as a guide, all wheels should be accurately measured. We have a Wheel Measuring Tool available for hir or purchase.

Q. What is PCD?
A. PCD is Pitch Circle Diameter, commonly referred to as Bolt Pattern.

Q. How do i measure PCD?
A. PCD on vehicles with an even number of Wheel Studs is the distance between the studs diametrically opposite each other. If you have an odd number of Wheel Studs e.g. five, then it is the distance between the centres of two adjacent Wheel Studs multiplied by 1.701. Refer to Technical articles for a PCD measuring guide.

Q. How do I determine if wheels I am looking at have the appropriate load rating for my vehicle?
A. Be very wary here. If the wheels are not load rated not only are they dangerous but you will not be covered by insurance in the event of a problem. To be legal in Australia wheels must have been tested to Australian Design Rules (ADR) or to International Standards. Most American and Australian manufactured Wheels meet this requirement. Be very careful buying wheels from other Countries of Origin.

Q. What is Back Space?
A. Back space is the istance from the back side of the Wheel mounting face to the outside of the Wheel flange. Refer to our Technical articles for more information.

Q. What is offset?
A. Offset can be termed positive or negative. Offset is the measurement from the Wheel Mounting face to the Centre line of the wheel. Refer to our Technical articles for more information.

Q. What is Hub size?
A. hub size is commonly called Centre Bore or Hub Bore. It is the hole size of the Wheel Centre.

Q. What is Positive Offset?
A. Positive offset is when the rear of the Wheel mounting surface is closer to the outside of the wheel. This type of wheel is deemed to have minimal dish as seen on front Wheel Drive vehicles. Refer to Technical articles for more information.

Q. What is Negative Offset?
A. Negative offset is when the rear of the Wheel mounting face is further from the outside of the wheel. This type of wheel is deemed to have dish. Common example is the Rear Wheel on a Pro Street Car. Refer to our Technical articles for more information.

FAQ Tyres

Q. How do i know what tyre to fit to my new mag wheels?
A. Tyre selection needs to be based on Vehicle Type, Vehicle Use, Load Rating, Speed Rating and Size. Contact us or refer to our Technical articles for more information.

Q. How big can i go with tyres on my vehicle?
A. Refer to our Technical articles for a wheel measuring guide and common vehicle types. Note we have a Wheel Measuring Tool available for Hire or Sale.

Q. How do i understand what all the numbers and letters on my tyre mean?
A. Refer to our chart in the Techincal articles section.