Technical Tips > Post 84
C4 84-87 Wheels and Tyres
MY081:
ZR1 had 9s front 11s rear im pretty shore and there was a 9 inch wheel in 84 to 89 on some models
Vettech:
Found my buyers guide. Now I'm more confused.It says, 84˜87 are P255/50VR-16 on 16x8.5, 16x9.5. But why put 255 onboth rims !???!
The book also says that in 88 two wheels were available, the old one and the new 88/90 so do they fit or not.
Whilst the 88/90 spec say new wheel is called a 12 slot, 16x8.5, 16x9.5 and 17x9.5 I assume the 17 is for the ZR1 1990.
The tyres say 255x16 base 88, 275x17 opt for 88 and base for 89/90 and 235x17 for 1990 ZR1 - surely this is a misprint P235/35ZR17.
So to me the 88 had a variety of sizes,but 89 thru 90 has P275/40ZR17 on 17x9.5 rims.
What do our fellow C4 owners out there KNOW !?!?!!?.
Kenobe:
Hi Doug, my 1985 runs a P255/50VR-16 all round :hi:
White88:
Try this site ,a lot of info here http://www.corvetteguys.com/wheels-tires-fitment.html
Vettech:
Thanks guys - I was begining to think there were no C4 owners on the Forum. That website is very clear, I can see what Ray was saying, The Offset and Backspace changed by 20mm and 1" repectively. So I guess I need to see if this car is base or Z51 or Z52. It would appear that by the C5 & C6 GM had learned to limit the number of options to one or two.
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