Size really does matter
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Joined: Sep 2006
Posts: 78
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From: Nashville NC
Size really does matter
Does any body know how wide of a wheel will fit a 78 C3? I'm currently running the original Rally wheels but would like to know how wide I can go without any other mods. I would like to stay with a 15 inch diameter but go wider if possible. Also need to know back spacing. Anybody know? I've posted this question before but go no response. I'm sure someone has got to know.
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Backspacing is your limit, not overall width. Measure from your wheel flange inward until it hits something. Maybe the frame or trailing arm. Subtract a comfortable amount and that's your maximum back spacing.
So long as you have a wheel with that back spacing you can go as wide as you want out the other direction but if it sticks out past the fender you might want to think about flares.
Also keep in mind that when the wheel gets too wide opposite the back spacing more pressure can be put on the wheel bearing and cause faster wear.
So long as you have a wheel with that back spacing you can go as wide as you want out the other direction but if it sticks out past the fender you might want to think about flares.
Also keep in mind that when the wheel gets too wide opposite the back spacing more pressure can be put on the wheel bearing and cause faster wear.
Racer
Joined: Feb 2007
Posts: 290
Likes: 0
From: Winchester CA
I was running P295/50/R15's on all four corners of my '80 with no problems for about ten years! That size gives the Vette a very muscular stance. I recently switched to the BFG Radial T/A P255/60/R15's.
Good luck
Good luck
Thread Starter
Advanced
Joined: Sep 2006
Posts: 78
Likes: 0
From: Nashville NC
Backspacing is your limit, not overall width. Measure from your wheel flange inward until it hits something. Maybe the frame or trailing arm. Subtract a comfortable amount and that's your maximum back spacing.
So long as you have a wheel with that back spacing you can go as wide as you want out the other direction but if it sticks out past the fender you might want to think about flares.
Also keep in mind that when the wheel gets too wide opposite the back spacing more pressure can be put on the wheel bearing and cause faster wear.
So long as you have a wheel with that back spacing you can go as wide as you want out the other direction but if it sticks out past the fender you might want to think about flares.
Also keep in mind that when the wheel gets too wide opposite the back spacing more pressure can be put on the wheel bearing and cause faster wear.
