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85 Wheel Question

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Old May 7, 2009 | 06:32 PM
  #1  
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Default 85 Wheel Question

Hello, all.
Newly registered and I have an 85 that is a work in progress.
I am currently looking into a nice set of wheels from a 93 and I was interested to find out if anyone can verify that they will fit on the 85.
Thanks for your help.
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Old May 7, 2009 | 06:52 PM
  #2  
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From: It's Bad Ass in Black! Cape Coral, Florida
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Welcome ceveo!
You have come to the most used corvette site on the net. You got problems, this is the place to come to. I do know the 85 has 16"wheels, while the 93 has 17". I am sure someone will chime in and let you know if they will fit.
Once again, welcome to the forum!
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Old May 7, 2009 | 07:00 PM
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Thanks for the reply.
I am aware of the 16" / 17"...I actually have wheels from an 88 on it now and I believe they are 17"'s.
Like you said, hopefully others will chime in to confirm the fit.
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Old May 7, 2009 | 08:40 PM
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It's all in the back space measurment. You will need adapters. Check out this web site for the dimensions.
http://www.joby.se/corvette/div/corvette_wheels/
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Old May 7, 2009 | 09:08 PM
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Thanks, Froggy.
That site is a big help.
I'm still a little confused though.
I have the later model wheels that are 7.4" backspace on now without the adapters.
I should be able to figure it out.
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Old May 8, 2009 | 04:17 PM
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From: gray tennessee
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i have four off a 85 with new bfgs .also four sawblades of a 94 with new bfg kdws. for sale 85s $600 94s $800
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Old May 8, 2009 | 08:35 PM
  #7  
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I am interested in the 85's, Tabragg.
Do you have pictures and do you know what the freight would be?
cevoe@aol.com
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Old May 8, 2009 | 10:13 PM
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The difference will be in the wheel offset, not the backspacing. 84-87 cars had a 38mm offset while the 88-96 cars had wheels with a 56mm offset. That 18mm difference is about 3/4". Later OEM wheels will bolt on with no problems but they will sit further inside the wheelwell that 3/4". Doesn't sound like much, but it will be noticeable.

The later C4's had 275/40-17 tires and there is very little difference in the diameter compared to the early 255/50-16 tires. You should not see a big difference in the speedo/odometer readings. The tread width is very close to the same.

To get the later wheels/tires to fit "right" you will need 3/4" adapters. They can be pricey but check the C4 Parts for Sale section as they sometime show up there. Also try flea-bay.
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