What are the criteria for wheel replacement?

[SilasRose]

Here are the relevant introductions for when a wheel needs to be replaced: A piece is missing from the outermost edge of the wheel: This may affect the airtightness. Even if there is no immediate air leakage, the strength to maintain airtightness is insufficient, which could lead to a tire blowout under extreme conditions. Car tires do not have inner tubes, only outer tires. When the tire is inflated, it expands outward, and the edge fits snugly against the wheel rim, relying on the tight seal between the tire and the wheel to maintain airtightness. The wheel edge is not chipped but is deformed due to impact: Regardless of how the wheel is damaged, whether it needs replacement depends on the location of the damage. If the edge is damaged, it must be replaced; if the edge is not damaged, replacement is unnecessary. A wheel is not cheap—it is significantly more expensive than a tire—so repair it if possible, and replace it if repair is not feasible. The wheel has suffered significant external force, causing deformation: Minor deformations may not be visible to the naked eye and require a dynamic balance test to detect. When the wheel rotates on the balancing machine, if it shows severe left-right wobbling and the balance values deviate significantly from the standard—sometimes by over 100 grams or even 200 grams—this indicates wheel deformation. Adding balancing weights usually cannot achieve balance in such cases, so replacement is recommended. Although minor wheel deformation may not cause a blowout, it can lead to severe steering wheel vibration at high speeds, which is dangerous and results in poor driving experience.