This basic guide below explains rim sizes when buying alloy wheels for your passenger car, sports car, 4x4 vehicle, bakkie etc. Understand wheel diameter, width, offset, bolt fitment and centre bore before shopping for wheels.
Explanation: 6.5 is the wheel width x 15 is the wheel diameter
Notes: The smaller size of the two is normally the width, with the larger being the diameter
Explanation: 38mm distance from the centre of the wheel to the mounting face
Did you now: 'ET' is derived from the German word 'Einpresstiefe', which translates to 'insertion depth'
Explanation: 4 bolts in a 100mm diameter circle
Notes: 'PCD' stands for 'Pitch Circle Diameter'