Step 1 Every wheel starts as a single block of high-strength aluminium alloy.
Step 2 With an 8000 tonne press, the block is forged into the basic wheel shape. Once forged, the wheels are heat-treated to maximise overall mechanical strength.
Step 3 Precision machining ensures that each wheel is perfectly round. This eliminates any runout in a turning wheel.
Step 4 Next, the ventilation and mounting holes are drilled.
Step 5 The Mirror Polish operation gives the wheel a reflective shine.

That gives you higher payload also gives you 423% more strength !