C4 Wheel Reference Guide
#1
Le Mans Master
Thread Starter
C4 Wheel Reference Guide
Here's what I believe are the correct nicknames and year info for C4 Vette wheels.
If anything is incorrect or you have anything to add, please do. I want this to be 100% correct. (you know...for the nubes)
84-85= "Turbines"
86-87= "Turbines"
88 16" base wheel= "Razors" (my choice, since apparently, no name exists)
88-89 17"= "Salad Shooters" or "Quisenarts"
88 "35th Anniversary Edition"
90= "Salad Shooters" or "Quisenarts"
88-91 "Dymags" (Available on Callaway Edition)
91-92= "Sawblades" (painted)
93-96= "Sawblades" (machine-faced)
94-96= "ZR-1s" or "A-molds" or "5-Spoke"
96 only= black "GrandSports"
If anything is incorrect or you have anything to add, please do. I want this to be 100% correct. (you know...for the nubes)
84-85= "Turbines"
86-87= "Turbines"
88 16" base wheel= "Razors" (my choice, since apparently, no name exists)
88-89 17"= "Salad Shooters" or "Quisenarts"
88 "35th Anniversary Edition"
90= "Salad Shooters" or "Quisenarts"
88-91 "Dymags" (Available on Callaway Edition)
91-92= "Sawblades" (painted)
93-96= "Sawblades" (machine-faced)
94-96= "ZR-1s" or "A-molds" or "5-Spoke"
96 only= black "GrandSports"
Last edited by johnnymo63; 04-08-2018 at 03:48 AM. Reason: correcting and adding info
#3
Team Owner
The ZR1- 5-spoke wheel was also available on the '96 Collector's Edition. "A-Mold" is the name of the company that supplied these types of wheels to GM.
Last edited by c4cruiser; 07-11-2010 at 07:38 PM.
#4
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#6
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Co-winner 2020 C4 of the Year - Modified
2018 Corvette of Year Finalist
2017 C4 of Year
2016 C7 of Year Finalist
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16-'17-'18-'19-'20
here we go
the Collector Edition also came with 5 spoke wheels.
Not all ZR1 came with 5 spoke wheels.
the ZR1 36mm off set sawblade
This thread is going
the Collector Edition also came with 5 spoke wheels.
Not all ZR1 came with 5 spoke wheels.
the ZR1 36mm off set sawblade
This thread is going
#7
Team Owner
#8
Le Mans Master
Thread Starter
Copied [1989 (pre production zr1)
front 17"x9.5" 56mm (7.4" backspacing)
Goodyear Gatorbacks, P275/40ZR-17
rear 17"x11" 36mm (7.4" backspacing)
Goodyear Gatorbacks, P315/35ZR-17]
Last edited by johnnymo63; 07-12-2010 at 01:52 AM.
#9
Thanks for the link. Nice to see year by year on the cars.
Also interesting is this guy's math skills. The back-spacing conversion is listed the same in inches for 36 and 56mm???
Copied [1989 (pre production zr1)
front 17"x9.5" 56mm (7.4" backspacing)
Goodyear Gatorbacks, P275/40ZR-17
rear 17"x11" 36mm (7.4" backspacing)
Goodyear Gatorbacks, P315/35ZR-17]
Also interesting is this guy's math skills. The back-spacing conversion is listed the same in inches for 36 and 56mm???
Copied [1989 (pre production zr1)
front 17"x9.5" 56mm (7.4" backspacing)
Goodyear Gatorbacks, P275/40ZR-17
rear 17"x11" 36mm (7.4" backspacing)
Goodyear Gatorbacks, P315/35ZR-17]
Perhaps it's maybe your lack of "math skills"! I'd say Joby's are "correct"! There's perhaps a mm or 2 difference in the back spacing of the wheels he's referred to using a generally accepted rim flange width of +1.
7.4" rounding to 10th's of an inch I'd say is the acceptable reference when comparing wheels when using mathematical formulas.
Joby's C4 wheel information is at a quick look pretty complete and quite informative.
Last edited by WVZR-1; 07-12-2010 at 05:08 AM.
#11
Le Mans Master
Thread Starter
Regarding your "copied" insert!
Perhaps it's maybe your lack of "math skills"! I'd say Joby's are "correct"! There's perhaps a mm or 2 difference in the back spacing of the wheels he's referred to using a generally accepted rim flange width of +1.
7.4" rounding to 10th's of an inch I'd say is the acceptable reference when comparing wheels when using mathematical formulas.
Joby's C4 wheel information is at a quick look pretty complete and quite informative.
Perhaps it's maybe your lack of "math skills"! I'd say Joby's are "correct"! There's perhaps a mm or 2 difference in the back spacing of the wheels he's referred to using a generally accepted rim flange width of +1.
7.4" rounding to 10th's of an inch I'd say is the acceptable reference when comparing wheels when using mathematical formulas.
Joby's C4 wheel information is at a quick look pretty complete and quite informative.
#12
Back-spacing is a simple dimension that requires a straight-edge a few inches longer than the diameter of the wheel and a tape measure. It's a dimension that can very easily determine if a wheel is a fit to the wheel-house, suspension components etc!
I'll leave it to you to "google" for the balance of the wheel dimension education! There are simple mathematical formulas for calculating offset from back-spacing and vice-versa but there are also a substantial number of erroneous formulas on the Internet so you'll need a wheel, a tape-measure, a straight-edge, pencil, paper and depending on your math skills maybe a calculator to become a wheel dimensioning expert.
Joby's dimensions are correct, you could measure a set of yours and use his guide to check your work/math.
#13
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St. Jude Donor '10
Offset is away from center. 9-1/2" wheel, center is 4-3/4".
Add 56mm (or 2-1/4") and you get 7".
Add the 1/2" rim lip, you have 7.5" backspace.
If you take that same offset (56mm) and run it on an 11" wheel, the 'backspace' is not the same as the 9-1/2" wheel.
center of 11" = 5-1/2"
add 56mm (2-1/4") = 7-3/4"
add 1/2" lip = 8.25"
#15
I'll take a stab at it.
Offset is away from center. 9-1/2" wheel, center is 4-3/4".
Add 56mm (or 2-1/4") and you get 7".
Add the 1/2" rim lip, you have 7.5" backspace.
If you take that same offset (56mm) and run it on an 11" wheel, the 'backspace' is not the same as the 9-1/2" wheel.
center of 11" = 5-1/2"
add 56mm (2-1/4") = 7-3/4"
add 1/2" lip = 8.25"
Offset is away from center. 9-1/2" wheel, center is 4-3/4".
Add 56mm (or 2-1/4") and you get 7".
Add the 1/2" rim lip, you have 7.5" backspace.
If you take that same offset (56mm) and run it on an 11" wheel, the 'backspace' is not the same as the 9-1/2" wheel.
center of 11" = 5-1/2"
add 56mm (2-1/4") = 7-3/4"
add 1/2" lip = 8.25"
In a "round-about" way you've got it and if you deduct the 20mm (56 - 36) from your 8.25 result ( for the 11") you're pretty close and remember the 7.4 is a rounded #! You've certainly got at least the idea!!
Offset and back-spacing are both calculated using "total-wheel width" and the +1 I referred to in my first post is 1" + the advertised width. Actual offset is usually a few mm different than advertised just because of the different width rim flanges!
#16
Le Mans Master
Thread Starter
Thanks for the explanations, guys. I completely understand now.
I was thinking back-spacing and offset were the same thing.
My apologies to Joby.
See, you learn something every day.
(Buy the wa, mi math skils is gooder then mi Inglish skils is)
I was thinking back-spacing and offset were the same thing.
My apologies to Joby.
See, you learn something every day.
(Buy the wa, mi math skils is gooder then mi Inglish skils is)
#17
Le Mans Master
You may want to add Dymags. I believe they were standard with RPO B2K from '88-91 ('87 had stock wheels, though you could buy 16" Dymags from Callaway as an option).
#19
Racer
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Does not change the names but 1984-1985 16" wheels had black centers, 1986 16 " wheels had bare aluminum centers, and 1987 16" wheels had gray centers.
Steve
Steve
Last edited by azrocketman; 07-14-2010 at 02:17 PM.
#20
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