Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - This is what happens when you buy fake wheels (Varrstoen)

HalveBlue · 06-30-2011, 09:39 AM

I'm no engineer, but I would assume that the total structural failure of these wheels has more to do with a fault in the manufacturing process or the materials than the fact that the wheel hit a pothole.

A wheel hitting a pothole or curb should result in a bend, not the cracking/shearing like some of the wheels in this thread are showing.

I'm guessing most of these wheels are cast. Shearing like that is usually indicative of impurities in the metal, or not allowing the metal to cool properly after filling the mold.

I used to hate the TüV regulations for wheels here in Germany. But after seeing this thread I'm glad they have them.

I'd hate to imagine what would happen if something like this happened while cruising down the autobahn at 100+ mph.

EDIT: I bet a lot of these wheels were also experiencing tremendous amounts of lateral forces at some point, which would definitely increase the likelihood of structural failure.

06-30-2011, 09:39 AM	#83
HalveBlue Zilvia FREAK! Join Date: Mar 2004 Location: I'm somewhere where I don't know where I am! Posts: 1,549 Trader Rating: (0)	I'm no engineer, but I would assume that the total structural failure of these wheels has more to do with a fault in the manufacturing process or the materials than the fact that the wheel hit a pothole. A wheel hitting a pothole or curb should result in a bend, not the cracking/shearing like some of the wheels in this thread are showing. I'm guessing most of these wheels are cast. Shearing like that is usually indicative of impurities in the metal, or not allowing the metal to cool properly after filling the mold. I used to hate the TüV regulations for wheels here in Germany. But after seeing this thread I'm glad they have them. I'd hate to imagine what would happen if something like this happened while cruising down the autobahn at 100+ mph. EDIT: I bet a lot of these wheels were also experiencing tremendous amounts of lateral forces at some point, which would definitely increase the likelihood of structural failure.