Q: What makes a lightweight forged wheel stronger than a cast one?
Forging compresses aerospace-grade aluminum under high pressure so the internal grain flows continuously, which resists cracking far better than the looser structure of a cast wheel. That is how UP-03 Lightweight can shed weight, starting from 21.05 pounds, and still take track abuse and pothole hits. A cast wheel would have to be heavier to approach the same strength, which defeats the purpose.
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