Corvette C3 Forum 1968 through 1982

TIRE SIZE FOR 74

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Old Sep 21, 2006 | 10:35 AM
  #1  
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Default TIRE SIZE FOR 74

Can someone please let me know what the correct rim and tire size for a 74 Vet in todays codes is.
 
Old Sep 21, 2006 | 12:29 PM
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Default RE: TIRE SIZE FOR 74


Originally a GR70-15, which would be a P225 70/15

bill.
 
Old Sep 21, 2006 | 12:37 PM
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Oops, forgot the rims. Those would be 15"x8", 5 lug x 4.75, with 4 inch backspacing. You can go 5" backspacing with the offset trailing arms and shorter rear spring.

bill.
 
Old Sep 21, 2006 | 03:47 PM
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Default RE: TIRE SIZE FOR 74

Thanks bill!
 
Old Sep 22, 2006 | 02:01 AM
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Default RE: TIRE SIZE FOR 74

Bill is 100% correct, FYI the original rims were made by Kelsey- Hayes and date coded ( in case your going toNCRS ) I put 235-70-r15 on the front & 255-60-r15 onthe rear and they fit fine on my 74 T Top, Pete.
 
Old Sep 24, 2006 | 12:48 AM
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Default RE: TIRE SIZE FOR 74

I have 255-60X15 on American Racing Vector 8.5" with 0.5" negative offset front and rear with no problems on my '73.
 
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