How big of a wheel do you need to measure?
When measuring for the Actual Diameter, you will want to measure from the inside of the Barrel of the wheel (Shown by the Red Line in the above photo). Example: A wheel with an actual Diameter of 18” will have an overall diameter of around 19.5”.
How do you measure the rim of a car?
Look at the measuring tape at the edge of the lip to find your rim’s outer diameter. The lips are the portion of a rim that stick out around the edge of the barrel. They help hold a wheel in place while a vehicle is in motion. The outer diameter only refers to the rim’s measurement from lip to lip.
How do you measure the backspacing of a wheel?
You can measure a wheel’s backspacing by running a straight edge across the rim bead (without a tire) and dropping another straight edge or Tape measure/ruler down to the wheel face, measuring that distance. (See picture below) The bolt pattern consists of two numbers and looks like this: 5×4.50.
How are alloy wheels measured for aftermarket?
It is essential that when fitting aftermarket alloy wheels, the new wheel is of the correct PCD for the vehicle. For 4-stud wheels, this can simply be calculated by measuring from the middle of the top left stud hole to the centre of the bottom right stud hole.
Do you know the size of a car wheel?
Not all wheels fit all cars, and if you’re considering fitting new wheels, then you’ll need to read our handy guide which tells you all you need to know! This is always referred to in inches, and as the name suggests is the diameter of the wheel – not the tyre and wheel together.
How to measure for proper wheel and tire fitment?
1. Take a wheel off your car and lay it on a flat surface with the back (the side that faces the brakes) facing up. 2. Lay a straightedge across the wheel and measure down to the mounting pad (you may have to deflate the tire to do this). This distance is your backspacing. 4-Lug Middle of two studs directly across from one another 5-Lug
How is the offset on a car wheel measured?
How offset is actually measured can be a little confusing, but the measurement refers to the distance from an imaginary line drawn exactly through the centre of the wheel to the mounting face of the wheel where it bolts against the brake disc.
How do you measure a 5 lug wheel?
Wheel Bolt Pattern Guide The easiest way to estimate the 5 lug bolt pattern, is to measure from the back of a hole to the center of the second hole. For a 4 lug wheel, measure center to center of two holes directly across from each other. Measuring a 6 bolt wheel requires you to measure center to center of two holes directly across from each other.