Wheel Experience needed
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Cruising
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Wheel Experience needed
RE: My 2004 ZO6. Looking at the TSW Nurburgring. Either a 17 x 9/18 x 10.5, or 18.9 x 9/ 19 x 10.5 combination. One concern is the difference from stock offsets: 54 stock-50 TSW front, 58 stock-65 TSW rear. Is it enough of difference to cause problems, etc? Any experiences/advice about the wheel application and the possible size combinations? Or tires run with these? I have done a lot of forum searches and have that info, but am posting this specifically in hopes for additional wisdom. Thanks.
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Cruising
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Thanks
Here is a link to a wheel offset calculator:
http://www.1010tires.com/wheeloffsetcalculator.asp
Here are the OEM Specs for the C5 wheels:
Backspace/offset dimensions are as follows:
C5 (coupe/vert):
Front 17x8.5", 58mm offset = 7.03" backspace
Rear 18x9.5" 65mm offset = 7.81" backspace
C5 Z06:
Front 17x9.5", 54mm offset = 7.38" backspace
Rear 18x10.5", 58mm offset = 8.03" backspace
If you run the calculator with the OEM C5Z06 wheel specs as "current" and your proposed wheels specs as "new" you will get results that tell you what the inner and outer edges of the wheel do relative to the OEM wheels.
I ran it for the above combination and the results were:
Rear: Inner edge has 7MM less clearance. Outer edge is retracted 7MM ,
Front: Inner edge has 10MM MORE clearance. Outer edge is retracted 2MM.
In a nut shell the rears will appear sunk into the wheel wells instead of nearly flush like the OEM C5Z06 wheels. Fronts will appear nearly unchanged unless your eye can discern 2MM.
I personally would not go with the 17/18 combinaton. Tire selection for 17" wheels is pretty bad IMHO. Not much better for the 18"...
2MM = 0.078 in and 7MM = 0.275 in.
http://www.1010tires.com/wheeloffsetcalculator.asp
Here are the OEM Specs for the C5 wheels:
Backspace/offset dimensions are as follows:
C5 (coupe/vert):
Front 17x8.5", 58mm offset = 7.03" backspace
Rear 18x9.5" 65mm offset = 7.81" backspace
C5 Z06:
Front 17x9.5", 54mm offset = 7.38" backspace
Rear 18x10.5", 58mm offset = 8.03" backspace
If you run the calculator with the OEM C5Z06 wheel specs as "current" and your proposed wheels specs as "new" you will get results that tell you what the inner and outer edges of the wheel do relative to the OEM wheels.
I ran it for the above combination and the results were:
Rear: Inner edge has 7MM less clearance. Outer edge is retracted 7MM ,
Front: Inner edge has 10MM MORE clearance. Outer edge is retracted 2MM.
In a nut shell the rears will appear sunk into the wheel wells instead of nearly flush like the OEM C5Z06 wheels. Fronts will appear nearly unchanged unless your eye can discern 2MM.
I personally would not go with the 17/18 combinaton. Tire selection for 17" wheels is pretty bad IMHO. Not much better for the 18"...
2MM = 0.078 in and 7MM = 0.275 in.
Thanks for the great info. I had thought about the possibility of the tire getting sucked in that 1/4in or so and wondered how visually acceptable that would be for me. Years ago, I probably would have made it up with a spacer, but really not warm to that idea now. I definitely see what you mean about tire selection for 17/18. My 04 Z has the original GY ((10,400mi) so I have been researching that. I think there are people running the TSW set up, maybe I can get a look sometime. Thanks again for the reply.
Melting Slicks
Joined: Apr 2004
Posts: 2,301
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From: Valencia CA
I have TSW/Cray 18/19 on my Vert and 19/20 Nurburgring on my Z06.
https://www.corvetteforum.com/forums...post1588682713
https://www.corvetteforum.com/forums...post1590532961
https://www.corvetteforum.com/forums...post1588682713
https://www.corvetteforum.com/forums...post1590532961
Last edited by Rookieracer; Feb 3, 2016 at 10:26 PM.
Instructor
Joined: Dec 2013
Posts: 206
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From: North Carolina
http://www.corvettecentral.com/wheel-offset/ check this out. You can compare all Corvette wheel sizes.
Burning Brakes
Joined: Nov 2001
Posts: 1,163
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From: Not far from COTA
don't see why the 19 rear would be a concern
light, strong, and true -- IMO a great wheel for the price
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Cruising
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Burning Brakes
Joined: Nov 2001
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From: Not far from COTA
that yields a F to R diameter ratio of 0.979
OEM 265 17" on F and 295 18" on R was a ratio of 0.97
I wanted to stay close to that so the Active Handling wouldn't kick in all the time when spirited driving occurred
I normally turn it off if I want to get spirited but I'm old and sometimes forget
Last edited by NealB; Feb 4, 2016 at 05:31 PM.
Thread Starter
Cruising
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now I'm running 275 .35 front and 295 .35 rear Michelin Pilot Super Sports
that yields a F to R diameter ratio of 0.979
OEM 265 17" on F and 295 18" on R was a ratio of 0.97
I wanted to stay close to that so the Active Handling wouldn't kick in all the time when spirited driving occurred
I normally turn it off if I want to get spirited but I'm old and sometimes forget
that yields a F to R diameter ratio of 0.979
OEM 265 17" on F and 295 18" on R was a ratio of 0.97
I wanted to stay close to that so the Active Handling wouldn't kick in all the time when spirited driving occurred
I normally turn it off if I want to get spirited but I'm old and sometimes forget
Thread Starter
Cruising
Joined: Apr 2015
Posts: 10
Likes: 0
now I'm running 275 .35 front and 295 .35 rear Michelin Pilot Super Sports
that yields a F to R diameter ratio of 0.979
OEM 265 17" on F and 295 18" on R was a ratio of 0.97
I wanted to stay close to that so the Active Handling wouldn't kick in all the time when spirited driving occurred
I normally turn it off if I want to get spirited but I'm old and sometimes forget
that yields a F to R diameter ratio of 0.979
OEM 265 17" on F and 295 18" on R was a ratio of 0.97
I wanted to stay close to that so the Active Handling wouldn't kick in all the time when spirited driving occurred
I normally turn it off if I want to get spirited but I'm old and sometimes forget
I am now getting close to making the 18 all around scenario a reality. My plan: TSW Nurbugring 18 x 9 front, 18 x 10.5 rear. Tires Mich PSS 265/35 front, 295/35 rear. The diameters are 25.3 and 26.1 front-rear. This looks like the original stock diameters with the GYs. See any problems with fit, computer etc.? Pretty good hunk of coin, so I want to be sure. Thanks for any opinions.
Burning Brakes
Joined: Nov 2001
Posts: 1,163
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From: Not far from COTA
This is becoming kinda crazy. When I think of the number of wheel swaps I've done on probably too many cars in my time with not a whole lot of research it makes this this C5 Z swap look like a masters thesis. But this is my first go a trying to please a computer, so I want to get it right.
I am now getting close to making the 18 all around scenario a reality. My plan: TSW Nurbugring 18 x 9 front, 18 x 10.5 rear. Tires Mich PSS 265/35 front, 295/35 rear. The diameters are 25.3 and 26.1 front-rear. This looks like the original stock diameters with the GYs. See any problems with fit, computer etc.? Pretty good hunk of coin, so I want to be sure. Thanks for any opinions.
I am now getting close to making the 18 all around scenario a reality. My plan: TSW Nurbugring 18 x 9 front, 18 x 10.5 rear. Tires Mich PSS 265/35 front, 295/35 rear. The diameters are 25.3 and 26.1 front-rear. This looks like the original stock diameters with the GYs. See any problems with fit, computer etc.? Pretty good hunk of coin, so I want to be sure. Thanks for any opinions.
you will not have any problems
Last edited by NealB; Feb 21, 2016 at 01:37 PM.
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Cruising
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Neil. I have ordered the Nurburgrings, and will run PS2s with them. Thanks for your help. I was wondering what lugs you used with your TSWs? Does shank, wall thickness, length of threads have to be addressed as opposed to stock?
Burning Brakes
Joined: Nov 2001
Posts: 1,163
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From: Not far from COTA
http://www.gorilla-auto.com/small-diameter-locks
the black 12mm x 1.5
food for thought, the Pilot Super Sport is IMO superior
300 tread wear instead of 200 and seems a lot grippier
don't know if the sizing works for you and don't know price difference, but I did have the PS2 and now have SS
Last edited by NealB; Mar 16, 2016 at 05:49 PM.
Thread Starter
Cruising
Joined: Apr 2015
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I run these on all 20 studs
http://www.gorilla-auto.com/small-diameter-locks
the black 12mm x 1.5
food for thought, the Pilot Super Sport is IMO superior
300 tread wear instead of 200 and seems a lot grippier
don't know if the sizing works for you and don't know price difference, but I did have the PS2 and now have SS
http://www.gorilla-auto.com/small-diameter-locks
the black 12mm x 1.5
food for thought, the Pilot Super Sport is IMO superior
300 tread wear instead of 200 and seems a lot grippier
don't know if the sizing works for you and don't know price difference, but I did have the PS2 and now have SS
Drifting
Joined: Dec 2011
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From: San Gabriel Valley California
St. Jude Donor '14-'15
