How to Distinguish Forged Wheels from Cast Wheels?
3 Answers
Forged wheels and cast wheels mainly differ in the following aspects: 1. Different processes: In terms of mold selection, cast wheels use sand molds, while forged wheels use copper molds; cast wheels undergo natural cooling followed by machining processes such as deburring, surface finishing, and polishing, whereas forged wheels are formed through stamping before undergoing machining. 2. Different costs: The casting process is simpler and relatively lower in cost, while forging, due to its more complex procedures, incurs higher manufacturing costs. 3. Different weights: Forged wheels require continuous stamping to form, resulting in a very dense molecular structure after shaping, which allows them to withstand higher pressure. Therefore, forged wheels are lighter in weight compared to cast wheels of the same size and strength.
I've been into car modifications for seven or eight years, and the most straightforward way to tell is by weight! Forged wheels are much lighter, with an 18-inch one weighing around 8 kilograms, while cast ones can be three to four kilograms heavier. Then, feel the edges for details—forged surfaces are exceptionally smooth and refined, with almost no bubble marks. Cast ones, upon close inspection, may have minor pinholes or burrs. Tap them with your finger; forged wheels produce a crisp 'ding' sound, while cast ones sound duller. Lastly, check the price—forged wheels of the same size cost at least twice as much. If buying online, browse through review images carefully, as many counterfeit forged wheels are actually low-pressure cast imitations.
Last time I helped my dad pick out rims, I did some research on this. Just remember three key points: First, check the manufacturing label—genuine forged wheels will be marked 'FORGED,' while cast ones say 'CAST.' Second, examine the backside where the spokes meet the hub—forged wheels show obvious machining marks with sharp edges, while cast wheels have smooth, rounded transitions like they're molded in one piece. Third, consider strength—my friend at the repair shop said forged rims can often be straightened if bent, but cast ones usually shatter on impact. For city driving, cast wheels are sufficient, but if you frequently drive mountain roads or carry heavy loads, forged wheels offer much better impact resistance—just be extra careful with potholes in winter.
