[Z06] Pulled the Trigger on a 18'' Square Combination
Safety Car
Joined: Sep 2007
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From: Sunniest city on Earth
He also said in another thread that he's running NT05s:
https://www.corvetteforum.com/forums...post1589328763
However, with factory rears all the way around, you can pretty much run whatever tire you want
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I'd like to do 18x9.5 front, and 19x10.5~11 rear, but I want the C5Z06 style wheel. I've look all over the place, and found couple of places, but they are discontinued or nowhere to be found.
Pro
Joined: Aug 2007
Posts: 505
Likes: 2
From: VA
He said he's running the same size tires as danziger in the post you quoted... so that would be 275/35F|295/35R
He also said in another thread that he's running NT05s:
https://www.corvetteforum.com/forums...post1589328763
However, with factory rears all the way around, you can pretty much run whatever tire you want
He also said in another thread that he's running NT05s:
https://www.corvetteforum.com/forums...post1589328763
However, with factory rears all the way around, you can pretty much run whatever tire you want
Safety Car
Joined: Sep 2007
Posts: 4,168
Likes: 21
From: Sunniest city on Earth
It all runs together, I've reading and looking for quite a while. I picked up the last two rear Z06 wheels recently and have been doing a lot of reading on tire size. After all the reading, I think I'm going to move my 295's to the front and pick up some 305's for the rear. I test fitted my 295's on the front and they fit without rubbing. I'm not sure I'd like 275's on the 10.5" wheels, even though I've read a lot people running that setup.
What didn't you like about Vettechris's setup? His car looks just fine with 275s on the OEM 18x10.5s.
Originally Posted by PLRX
I'd like to do 18x9.5 front, and 19x10.5~11 rear, but I want the C5Z06 style wheel. I've look all over the place, and found couple of places, but they are discontinued or nowhere to be found.
Pro
Joined: Aug 2007
Posts: 505
Likes: 2
From: VA
I haven't seen 275's on a 10.5 close enough to see how they fit to give an honest opinion. I know 275's are good for a 9-11" width wheel. I know how 295s fit as I have those on there currently. It seems as though it may all be personal preference. Based on the numbers, 275-315 will be fine on a 10.5" width wheel.
If someone is willing to post a pic of 275's on 10.5 wheel, I'm interested in seeing them.
I'll be selling my current front wheels, Alcoa's 17x9.5 and 275/40/17 Nt05's to offset the cost of some of the money spent.
Last edited by XXXLTRP; Apr 22, 2015 at 08:11 AM.
Melting Slicks
Joined: Jun 2002
Posts: 2,591
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From: Mobile al
Anyone ever run a 275/35/18 on front with a 18x9.5 wheel and a 295/35/18 rear on a 18x10.5 wheel?
I am currently running a 265/35/18 on front and want to switch to PSS tires, but this front size is on backorder, the 275/35 is not.
BTW I hate the look of the rear sidewall being thinner than the front.
I am currently running a 265/35/18 on front and want to switch to PSS tires, but this front size is on backorder, the 275/35 is not.
BTW I hate the look of the rear sidewall being thinner than the front.
Safety Car
Joined: Sep 2007
Posts: 4,168
Likes: 21
From: Sunniest city on Earth
I'm going to R888's or Nt01's on the rear, and the same on the front, different size when my current NT05's need replacing. Not a track setup, just a fun car that I don't get to drive enough.
I haven't seen 275's on a 10.5 close enough to see how they fit to give an honest opinion. I know 275's are good for a 9-11" width wheel. I know how 295s fit as I have those on there currently. It seems as though it may all be personal preference. Based on the numbers, 275-315 will be fine on a 10.5" width wheel.
If someone is willing to post a pic of 275's on 10.5 wheel, I'm interested in seeing them.
I'll be selling my current front wheels, Alcoa's 17x9.5 and 275/40/17 Nt05's to offset the cost of some of the money spent.
I haven't seen 275's on a 10.5 close enough to see how they fit to give an honest opinion. I know 275's are good for a 9-11" width wheel. I know how 295s fit as I have those on there currently. It seems as though it may all be personal preference. Based on the numbers, 275-315 will be fine on a 10.5" width wheel.
If someone is willing to post a pic of 275's on 10.5 wheel, I'm interested in seeing them.
I'll be selling my current front wheels, Alcoa's 17x9.5 and 275/40/17 Nt05's to offset the cost of some of the money spent.
Anyone ever run a 275/35/18 on front with a 18x9.5 wheel and a 295/35/18 rear on a 18x10.5 wheel?
I am currently running a 265/35/18 on front and want to switch to PSS tires, but this front size is on backorder, the 275/35 is not.
BTW I hate the look of the rear sidewall being thinner than the front.
I am currently running a 265/35/18 on front and want to switch to PSS tires, but this front size is on backorder, the 275/35 is not.
BTW I hate the look of the rear sidewall being thinner than the front.
The rear sidewall definitely wouldn't be thinner than the front, either
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Safety Car
Joined: Sep 2007
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From: Sunniest city on Earth
Racer
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From: Cartersville GA
any spacers
Melting Slicks
Joined: Jun 2002
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From: Mobile al
Thread Starter
Team Owner
Joined: Nov 2001
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From: Pensacola FL
Okay, so I've been pretty busy with work and getting our boat squared away. Plus it has rained here nearly every day this month...
After some initial problems, Speed Depot got things sorted out. The tires/rims look fantastic and, in my limited driving so far, are quiet, less darty/nervous and sticky to the point where I am considering mud-flaps...
Don't mind that my C5Z looks like a lifted 4x4 from this perspective (maybe I really do need mud-flaps), it doesn't look as awful in real life.
The 275/35 looks great and no regrets versus a 265/35.
If I ever get some decent time/weather, I'll get them on an auto-x or my own back-road test site for a better review.
After some initial problems, Speed Depot got things sorted out. The tires/rims look fantastic and, in my limited driving so far, are quiet, less darty/nervous and sticky to the point where I am considering mud-flaps...
Don't mind that my C5Z looks like a lifted 4x4 from this perspective (maybe I really do need mud-flaps), it doesn't look as awful in real life.
The 275/35 looks great and no regrets versus a 265/35.
If I ever get some decent time/weather, I'll get them on an auto-x or my own back-road test site for a better review.
Racer
Joined: Mar 2007
Posts: 430
Likes: 2
I'm looking to run C6Z brakes and have been struggling to find wheels I like. I think at this point I would rather just get two more wheels that match what I have so I can spend the money on tires. The GM wheels are just about as light as the non-forged wheels I have been looking at (I am sooooo not in the HRE tax bracket) and if I run square, I can run a more aggressive alignment spec and then rotate them.
Any issues with active handling or related systems?
Why wouldn't I want to run a square setup?
Safety Car
Joined: Sep 2007
Posts: 4,168
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From: Sunniest city on Earth
Just to clarify...square setup?
I'm looking to run C6Z brakes and have been struggling to find wheels I like. I think at this point I would rather just get two more wheels that match what I have so I can spend the money on tires. The GM wheels are just about as light as the non-forged wheels I have been looking at (I am sooooo not in the HRE tax bracket) and if I run square, I can run a more aggressive alignment spec and then rotate them.
Any issues with active handling or related systems?
Why wouldn't I want to run a square setup?
I'm looking to run C6Z brakes and have been struggling to find wheels I like. I think at this point I would rather just get two more wheels that match what I have so I can spend the money on tires. The GM wheels are just about as light as the non-forged wheels I have been looking at (I am sooooo not in the HRE tax bracket) and if I run square, I can run a more aggressive alignment spec and then rotate them.
Any issues with active handling or related systems?
Why wouldn't I want to run a square setup?
You would only have possible issues with AH/TC if you had the same size tires at all four corners, but if you don't care then you'd get the benefit of being able to rotate
You shouldn't need a spacer to run OEM (NOT replica) C5Z wheels up front with C6Z brakes, but even if you have an oddball car and there's a clearance problem, it wouldn't be anything a little 5mm spacer wouldn't resolve
Pro
Joined: Jan 2008
Posts: 549
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From: Houston TX
No, he's running square wheels (18x10.5 C5Z rear wheels at all four corners) fitted with 275/35 front and 295/35 rear Nitto NT05 tires ...
... You shouldn't need a spacer to run OEM (NOT replica) C5Z wheels up front with C6Z brakes, but even if you have an oddball car and there's a clearance problem, it wouldn't be anything a little 5mm spacer wouldn't resolve
... You shouldn't need a spacer to run OEM (NOT replica) C5Z wheels up front with C6Z brakes, but even if you have an oddball car and there's a clearance problem, it wouldn't be anything a little 5mm spacer wouldn't resolve
I have essentially the same setup: OEM C5Z 18x10.5 front and rear, Michelin PSS 275/3518 and 295/35/18, C6Z brakes. The wheel spokes clear the calipers by less than 2mm, but it's enough.
Safety Car
Joined: Sep 2007
Posts: 4,168
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From: Sunniest city on Earth
I've been following this discussion.
I have the GM C6 Z06/G Sport calipers & rotors, on my 03 Z06.
I have a set of street wheels/ Zr replicas for C5, that are hard to keep clean ...but they clear the caliper just fine, front & rear.
They are 19x11 (R) 18x9-1/2 fronts.
Tires are Mich PS2 in265/35zr18 & 305/30zr 19.
My rear tire is rubbing the inside wheel liner...enough to rubthrough a small area of the liner.
The inside rim guard of the tire is what slightly rubs.
If I were to put a 5mm spacer, I'm pretty sure that would eliminate the problem.
On a GM rear 18x 10-1/2 C5 Z wheel the lug nut turns a complete 9-1/2 turns to get tight to 100 lb.ft
With the rear 18x10-1/2 wheel w/a 5mm spacer, it takes 5-1/4 turns to get to torque specs.
On my rear19" zr replica w/a 5mm spacer, it takes the same amount of turns= 5 1/2...w/5mm spacer.
I'd like to know your opinion on only getting that few of turns(5-1/2, onto the lug?
Oh, by the way,
Would it make sense to go w/285/35-19 in the rear w/the 19x11 wheels.
I believe that tire is approximately 3/4" narrower , which should give 3/8" more clearance to the inside of wheel/tire, where it rubs.
That way, I wouldn't need the 5mm spacer & get the full 9-1/2 turns.
I also plan on using the C5 rear wheel on all for corners, when I'm not running the zr1 replicas.
I'm going to be needing sizes & brands of tires that are quiet & good for just summer & rain weather.....NORMAL driving.
Opinions appreciated.
I have the GM C6 Z06/G Sport calipers & rotors, on my 03 Z06.
I have a set of street wheels/ Zr replicas for C5, that are hard to keep clean ...but they clear the caliper just fine, front & rear.
They are 19x11 (R) 18x9-1/2 fronts.
Tires are Mich PS2 in265/35zr18 & 305/30zr 19.
My rear tire is rubbing the inside wheel liner...enough to rubthrough a small area of the liner.
The inside rim guard of the tire is what slightly rubs.
If I were to put a 5mm spacer, I'm pretty sure that would eliminate the problem.
On a GM rear 18x 10-1/2 C5 Z wheel the lug nut turns a complete 9-1/2 turns to get tight to 100 lb.ft
With the rear 18x10-1/2 wheel w/a 5mm spacer, it takes 5-1/4 turns to get to torque specs.
On my rear19" zr replica w/a 5mm spacer, it takes the same amount of turns= 5 1/2...w/5mm spacer.
I'd like to know your opinion on only getting that few of turns(5-1/2, onto the lug?
Oh, by the way,
Would it make sense to go w/285/35-19 in the rear w/the 19x11 wheels.
I believe that tire is approximately 3/4" narrower , which should give 3/8" more clearance to the inside of wheel/tire, where it rubs.
That way, I wouldn't need the 5mm spacer & get the full 9-1/2 turns.
I also plan on using the C5 rear wheel on all for corners, when I'm not running the zr1 replicas.
I'm going to be needing sizes & brands of tires that are quiet & good for just summer & rain weather.....NORMAL driving.
Opinions appreciated.
How much room do you have in the back to get flush with the outer fender?
Le Mans Master
Joined: May 2007
Posts: 5,393
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From: Belleville Mich.
They are not the correct offset.
The rear Off/Set are 73 O/S
They are setting pretty close to flush now but it wouldn't hurt to come out 10mm. to get away from the liner.
I was hoping not to add the longer hub lug bolts, as I want to be able to also run the rear Z wheels on all 4 too.
Safety Car
Joined: Sep 2007
Posts: 4,168
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From: Sunniest city on Earth
Your correct,
They are not the correct offset.
The rear Off/Set are 73 O/S
They are setting pretty close to flush now but it wouldn't hurt to come out 10mm. to get away from the liner.
I was hoping not to add the longer hub lug bolts, as I want to be able to also run the rear Z wheels on all 4 too.
They are not the correct offset.
The rear Off/Set are 73 O/S
They are setting pretty close to flush now but it wouldn't hurt to come out 10mm. to get away from the liner.
I was hoping not to add the longer hub lug bolts, as I want to be able to also run the rear Z wheels on all 4 too.
You're going to be using the Z06 rears for track, right? So your hard driving will be done with no spacers at all.
Le Mans Master
Joined: May 2007
Posts: 5,393
Likes: 17
From: Belleville Mich.
As for the tires being flush w/the (top) of the fender.
The stock rear Z wheels. The tires, w/weight on the ground.
There is 5/16" where the tire extends past the fender. (no spacer)
The repro wheels measures at the same spot with a 1/4" past the fender. (no spacer)
So w/the reproduction wheels, I will try a 5mm spacer to give some room from the liner.
I won't be driving the car hard (w/these wheels & I check my air pressure & tightness of lugs often.
With the square set up, of course I wont need the spacers.
Thanks rjwz28 & every one else.
The stock rear Z wheels. The tires, w/weight on the ground.
There is 5/16" where the tire extends past the fender. (no spacer)
The repro wheels measures at the same spot with a 1/4" past the fender. (no spacer)
So w/the reproduction wheels, I will try a 5mm spacer to give some room from the liner.
I won't be driving the car hard (w/these wheels & I check my air pressure & tightness of lugs often.
With the square set up, of course I wont need the spacers.
Thanks rjwz28 & every one else.
Last edited by bumble-z; Apr 29, 2015 at 07:54 PM.