How To Measure Wheel Offset And Backspacing

Wondering how much backspacing you have with your current or desired offset.

How to measure wheel offset and backspacing. To measure backspace you can just use a ruler or measuring tape to find the distance from the rear of the wheel well to the tire. Offset 254 x backspacing 5 x full rim width so for instance if you have a wheel that has a size of 20x9 then the actual width is most likely 10 inches wide. However you could subtract the backspacing measurement from half of the wheel width and get close. Let us help you make sure you have the perfect stance.

Wheel backspace is the distance from the inside edge of a wheel to the mounting face. How to measure wheel offset. We only use an offset input for the calculator so if you know the backspacing and not the offset simply convert it and input the offset into the field. A negative difference indicates a negative offset while a positive difference indicates a positive offset.

To measure offset you must measure the width of the rims and then measure the distance from the hub to the outside of the rims. Just select a wheel size and start typing either offset or backspacing and the equivalent will be shown. This button will be enabled when youve got dimensions for at least one more wheel besides the first entered in the calculator. There isnt an easy or accurate way to measure the offset of a wheel.

To start plug in your current wheel width offset height width and diameter in comparison to a new setup and it will give you the difference in clearance and positioning. After you click on this button the last calculated wheel dimensions will be added for the comparision in the comparing wheels form below. A wheels backspace is equal to the wheels width offset in inches see image for a reference to demonstrate what wheel backspacing is. Plate of the wheel to the back edge of the wheel where offset measures the distance from the mounting plate of the wheel to the center of the wheel barrel.

Its width and wheel centerline outboard flange to inboard flange measurement then subtract the measurement of centerline from the wheel backspace in order to know the offset. If the backspacing is 7 inches then the calculation is as follows. For measuring the wheel offset following three measurements are essential wheel backspace. To help you understand offset and backspacing take a look at.

Offset 254 x 7 5 x 10 offset 508mm. Using a straight edge ruler and a ruler or tape measurer you can get an accurate measurement of your wheelrim back space.