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Help 315 square setup

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Old 08-17-2010, 09:20 PM
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PA Z06
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Default Help 315 square setup

Looking for some help with regards to a running 315x17 square setup on a 2002 Z06. Other then running ccw classics in sizes 17x10 and 17x11, what wheels are people running.
Does grandsport/zr1 repro style wheels in 17x11 in 50mm offsets work for all four corners.
I would think 17x11 on all four would work except for extreme lock.
I did a search and didnt find the exact answer I was looking for.

Any help is appreciated
Thanks Nando
Old 08-17-2010, 09:27 PM
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MySR71
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I run 315's front and rear on stock rear Z06 wheels. So the wheels are 10.5x18" that work on the front and rear.

Edit: Ooops. Just realized you were specifically asking about 17" wheels. Sorry.

Last edited by MySR71; 08-17-2010 at 09:33 PM.
Old 08-17-2010, 09:28 PM
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Armycop
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^...what he said.
Old 08-17-2010, 10:41 PM
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UstaB-GS549
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I run OEM GS wheels on my 02 Z06. Right now I'm running 315 & 335 on 9.5 & 11" rims.

I put my 17X11 50mm offset GS wheels with 315's on front and they stuck out like Dumbo's ears. I met some guys at Road America a few years ago that ran the 17x11 W/315 at all four corners without problem... so they said. I think they will rub a bit at full lock, but that is pretty unusual except when parking the car in the pits.

My friend with 02 Z06 runs 315/18 on 18x10.5 Z06 wheels on all 4 corners. The tires on the front fender and wheel well liner at extreme compression/cornering conditions. A little more negative camber might fix that, but I'm not sure.
Old 08-17-2010, 10:48 PM
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spazegun2213
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setups I've run:
T1 ccw's
17x11's GS wheels
rear c5 z06 wheels

ALL of them rubbed at full lock... you get used to it.
Old 08-17-2010, 10:59 PM
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Z06cool
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Originally Posted by spazegun2213
setups I've run:
T1 ccw's
17x11's GS wheels
rear c5 z06 wheels

ALL of them rubbed at full lock... you get used to it.
x2.....same experience.
Old 08-18-2010, 06:44 AM
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PA Z06
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Thanks for all the replies, I will just go with 17x11 on all 4 corners.
Old 08-18-2010, 11:10 AM
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Bill Dearborn
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I ran the GS 17x11 wheels on the front. The biggest issues are avoiding steering lock when moving around the garage or paddock area. The tires will rub on the DRM ducts if you have them and the rims will rub the inside edge on the lower control arm. The control arm will then strip off any balance weights you have mounted there.

Bill
Old 08-18-2010, 01:25 PM
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PA Z06
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Originally Posted by Bill Dearborn
I ran the GS 17x11 wheels on the front. The biggest issues are avoiding steering lock when moving around the garage or paddock area. The tires will rub on the DRM ducts if you have them and the rims will rub the inside edge on the lower control arm. The control arm will then strip off any balance weights you have mounted there.

Bill
But you dont have to run wheel weights on slicks rights.
Old 08-18-2010, 01:27 PM
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John Shiels
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Originally Posted by PA Z06
But you dont have to run wheel weights on slicks rights.
tires should be balanced
Old 08-18-2010, 04:29 PM
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yakisoba
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Watch your wheel sensors too. The rear wheels can sometimes rub on that wire with certain offsets of wide wheels.
Old 08-18-2010, 07:59 PM
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Gatorac
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Originally Posted by PA Z06
But you dont have to run wheel weights on slicks rights.
I don't bother with balancing anymore. Tires wear down too quickly and rotate on the rim anyways. Mount 'em and run.
Old 08-18-2010, 10:15 PM
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grantar2
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Not to hijack the tread but I autocross a C4 Corvette, and have 3 sets of 9x17 wheels. The question is can I get away with running 315 Kumho V710s. 295's fit fine but a little concerned with 315's?
Old 08-18-2010, 11:24 PM
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Armycop
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Originally Posted by grantar2
Not to hijack the tread but I autocross a C4 Corvette, and have 3 sets of 9x17 wheels. The question is can I get away with running 315 Kumho V710s. 295's fit fine but a little concerned with 315's?
wouldn't do it; 315's are a squeeze on 10's.
Old 08-19-2010, 02:48 AM
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vettehardt
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Originally Posted by grantar2
Not to hijack the tread but I autocross a C4 Corvette, and have 3 sets of 9x17 wheels. The question is can I get away with running 315 Kumho V710s. 295's fit fine but a little concerned with 315's?

My dad does it all the time on his 90 ZR-1 in the front. They don't rub anywhere we can see or be conserned about. I know people who have lowered vettes and run the 315s on 11" rims and don't have a problem except at the very limit of lock to lock. Dad runs 295 or 315s up front and 335s rear. It can be done.
Old 08-19-2010, 07:08 AM
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Originally Posted by Bill Dearborn
I ran the GS 17x11 wheels on the front. The biggest issues are avoiding steering lock when moving around the garage or paddock area. The tires will rub on the DRM ducts if you have them and the rims will rub the inside edge on the lower control arm. The control arm will then strip off any balance weights you have mounted there.

Bill
I have Bill's old rims and run 315's on them for autocross. I had them balanced with stick on weights so they don't get knocked off. I noticed a small mark on my driver's side upper control arm after going full lock during a spin. Other than that, they are awesome. The fronts stick out 1/2"-3/4" inch. The rears stick out less than 1/4".

Andy
Old 08-20-2010, 08:46 PM
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jadkins
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Have been running GS Clones 17x11 - 315s square for several years on both a 2000 Coupe and a 2008 Z51 coupe (with downsized c5 brakes). No issues except for slight rub at FULL lock (in the pits, might be a problem for AutoX but not an issue for track events).

11" fronts (315) with 12" (335) rears might be faster but the square setup lets me rotate tires and get more events out of a set of tires. My dad runs GS 11" fronts and CCW Classic rears 12" (and 11" Classics on rear too) - the GS wheels clear his Wilwood Brake setup and he doesn't have to run a spacer.

I am thinking about going to an 18"x 11" adn 12" (Forgestars) set this Winter but am not looking forward to the increased tire costs...the 17x11-315 setup is the most economical and still fast...

Good luck.
Old 08-20-2010, 08:48 PM
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Originally Posted by jadkins
Have been running GS Clones 17x11 - 315s square for several years on both a 2000 Coupe and a 2008 Z51 coupe (with downsized c5 brakes). No issues except for slight rub at FULL lock (in the pits, might be a problem for AutoX but not an issue for track events).

11" fronts (315) with 12" (335) rears might be faster but the square setup lets me rotate tires and get more events out of a set of tires. My dad runs GS 11" fronts and CCW Classic rears 12" (and 11" Classics on rear too) - the GS wheels clear his Wilwood Brake setup and he doesn't have to run a spacer.

I am thinking about going to an 18"x 11" adn 12" (Forgestars) set this Winter but am not looking forward to the increased tire costs...the 17x11-315 setup is the most economical and still fast...

Good luck.
Thanks I just ordered some ZR1/GS repros in 17x11, and I got 315 A6s. I should be able to try them next month, I am gonna change the alignment also
Old 08-21-2010, 12:10 PM
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kmagvette
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Experience from another 02QSC5Z...I used to run the 315x17 T1 setup, then moved to 18x12 R and 18x11 F, 315 square. Both setups cleared everything except the front fenders. While the front wheel opening has been worn (up) extensively, and I used a file on it to help right-size the opening faster, the only real solution to the clearance problem was to pitch the stock springs and go to coil overs and large sway bars - I went with the DRM coil overs and Phadt competition bars. All that lateral grip needs to be offset by stiffer roll resistance.

I am now running Pirelli 18x305's. They clear everything and tuck in up front, but the increased grip over the Hoosiers has brought my problem full circle. More lateral grip and body roll is causing the inside front tire to be carried through high-G, low compression turns - at just the right speed (87,turn 5, WGI) I can feel the inside tire skipping on the pavement - feels like the front-end is going to shake itself apart...at 89+ the tire remains in the air and all is smooth.

Last edited by kmagvette; 08-21-2010 at 12:20 PM.

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