Any difference between alcoa to speedline??
Burning Brakes
Joined: Dec 2009
Posts: 963
Likes: 23
Speedlines are a hint darker but the difference is not huge.
The Forged wheel that was offered in 2001 was made by Alcoa. For years 2002/3/4 the Z06 wheels were made by Speedline. There was a short period in the fall of 2001 were the factory ran out of Speedline rims and the forged Alcoa's were installed on a few 2002 models. Speedlines are a bit lighter (spun cast), but alcoas are a bit stronger (forged).
The Forged wheel that was offered in 2001 was made by Alcoa. For years 2002/3/4 the Z06 wheels were made by Speedline. There was a short period in the fall of 2001 were the factory ran out of Speedline rims and the forged Alcoa's were installed on a few 2002 models. Speedlines are a bit lighter (spun cast), but alcoas are a bit stronger (forged).
Thread Starter
Le Mans Master
Joined: Jul 2010
Posts: 6,013
Likes: 726
Speedlines are a hint darker but the difference is not huge.
The Forged wheel that was offered in 2001 was made by Alcoa. For years 2002/3/4 the Z06 wheels were made by Speedline. There was a short period in the fall of 2001 were the factory ran out of Speedline rims and the forged Alcoa's were installed on a few 2002 models. Speedlines are a bit lighter (spun cast), but alcoas are a bit stronger (forged).
The Forged wheel that was offered in 2001 was made by Alcoa. For years 2002/3/4 the Z06 wheels were made by Speedline. There was a short period in the fall of 2001 were the factory ran out of Speedline rims and the forged Alcoa's were installed on a few 2002 models. Speedlines are a bit lighter (spun cast), but alcoas are a bit stronger (forged).
Burning Brakes
Joined: Dec 2009
Posts: 963
Likes: 23
No physical difference unless you look at the back. Alcoas are stamped GM and Speedlines are stamped Speedline Made in Italy.
I'm a little OCD so even though you probably couldn't tell, I would always know they were different and it would bother the heck out of me.
I'm a little OCD so even though you probably couldn't tell, I would always know they were different and it would bother the heck out of me.
Tech Contributor
Joined: Jan 2004
Posts: 20,030
Likes: 289
From: Wylie TX --> Less is More, except under the hood !
The Alcoa's have sharper edges on the spokes compared to the more rounded edges of the spokes on the Speedlines... 
Compare them side by side and you will see what I mean.
Toque
Compare them side by side and you will see what I mean.
Toque
Tech Contributor
Joined: Jan 2004
Posts: 20,030
Likes: 289
From: Wylie TX --> Less is More, except under the hood !
A guy I met locally who bought a 01 Z06 was showing me his car one day a few years back. I immediately noticed the Alco's on the drivers side, and the Speedlines on the pass side. He has never noticed that before. I just knew the difference and pointed it out to him. We suspected the previous owner damaged the Alcoa's on the pass side and replaced them with Speedlines (not knowing the difference).
Toque
Last edited by Toque; Apr 26, 2011 at 05:13 PM.
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