1992 Wheel Fitment
Thread Starter
Cruising
Joined: Dec 2020
Posts: 11
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1992 Wheel Fitment
Hey guys! I'm currently in the market for some aftermarket wheels for my 1992 LT1 C4 Coupe, but I was wondering what fitment I would need to get them flush if I bought them the same size as stock wheels (17" x 9.5"). Think you guys could help me out?
Le Mans Master
Joined: Aug 2015
Posts: 6,121
Likes: 1,998
From: St. Charles MO
When you say "flush," I assume you mean you want to put them out even with the outside fender edges. On any 88-96 Corvette, that means you need 4" of "frontspacing," which is the amount of rim width that extends out from the hub mounting surface. It's the opposite of backspacing. With a 9.5" wheel, 32mm offset will get you that flush fit with a 275-width tire. Be aware that this will place added loads on the wheel bearings and increase scrub radius, about the same amount as the 84-87 Corvettes had. I don't know how much this really impacts bearing life. It will add a bit of tramlining and other steering forces. It won't be anything terminal, but it will be different than the "zero scrub" later C4 geometry.
Team Owner
Joined: Sep 2003
Posts: 25,398
Likes: 2,743
I believe the only way for the OP to calculate offset required for his desired placement is the 'trusted' string drop and a trusted measuring device! Only way!
He's the 'only guy' that knows where he'd like it and knows what he means by 'FLUSH'! I ain't going to guess/speculate the OP's desires.
He's the 'only guy' that knows where he'd like it and knows what he means by 'FLUSH'! I ain't going to guess/speculate the OP's desires.
Last edited by WVZR-1; Jan 12, 2021 at 11:02 AM.
Thread Starter
Cruising
Joined: Dec 2020
Posts: 11
Likes: 0
When you say "flush," I assume you mean you want to put them out even with the outside fender edges. On any 88-96 Corvette, that means you need 4" of "frontspacing," which is the amount of rim width that extends out from the hub mounting surface. It's the opposite of backspacing. With a 9.5" wheel, 32mm offset will get you that flush fit with a 275-width tire. Be aware that this will place added loads on the wheel bearings and increase scrub radius, about the same amount as the 84-87 Corvettes had. I don't know how much this really impacts bearing life. It will add a bit of tramlining and other steering forces. It won't be anything terminal, but it will be different than the "zero scrub" later C4 geometry.
Thread Starter
Cruising
Joined: Dec 2020
Posts: 11
Likes: 0
I believe the only way for the OP to calculate offset required for his desired placement is the 'trusted' string drop and a trusted measuring device! Only way!
He's the 'only guy' that knows where he'd like it and knows what he means by 'FLUSH'! I ain't going to guess/speculate the OP's desires.
He's the 'only guy' that knows where he'd like it and knows what he means by 'FLUSH'! I ain't going to guess/speculate the OP's desires.
