What's a cost effective track wheel and tire setup for my Z51?
12-02-2014, 05:01 PM
#21
Instructor
How is the fit in the rear? I looked at the TSW Nurburgring, but they don't have a rear fitment. The offset is not enough and the tire sticks out. Thought this may cause some rubbing with the car lowered? Are the Interlagos working fine?
12-02-2014, 05:03 PM
#22
Burning Brakes
Thread Starter
I have a set of four C5 Z06 rear wheels, 18x10.5", with four Nitto NT01's in 315/30/15. They fit fine front and rear without spacers, and have not seen any rubbing on my Z51, and they clear brakes and brake ducts and fenders. At full droop and full lock, the front wheel touches the rear of the front upper A-arm, which is not likely to happen in any situation I can think of. Putting tape marker on A-arm just to be sure it does not happen on track. Same setup as MTI Racing used, so I copied them.
12-02-2014, 09:36 PM
#23
Instructor
I have a set of four C5 Z06 rear wheels, 18x10.5", with four Nitto NT01's in 315/30/15. They fit fine front and rear without spacers, and have not seen any rubbing on my Z51, and they clear brakes and brake ducts and fenders. At full droop and full lock, the front wheel touches the rear of the front upper A-arm, which is not likely to happen in any situation I can think of. Putting tape marker on A-arm just to be sure it does not happen on track. Same setup as MTI Racing used, so I copied them.
12-04-2014, 05:11 PM
#25
Pro
Member Since: Jan 2011
Location: San Jose CA
Posts: 586
Likes: 0
Received 0 Likes
on
0 Posts
The C7 is still pretty new and most are probably still on original tires.
Looking the TireRack , there are no Extreme Performance category options yet.
Hopefully Bridgestone RE-11 and Yokohama ADVAN 08R's will make C7 sizes, but maybe not anytime soon.
Those are the two best "street" tire options that can pull double duty.
Looking the TireRack , there are no Extreme Performance category options yet.
Hopefully Bridgestone RE-11 and Yokohama ADVAN 08R's will make C7 sizes, but maybe not anytime soon.
Those are the two best "street" tire options that can pull double duty.
12-04-2014, 11:20 PM
#27
Race Director
Member Since: Jul 2007
Location: Texas Hill Country
Posts: 10,763
Received 2,379 Likes
on
1,238 Posts
12-05-2014, 06:21 AM
#28
Burning Brakes
i ran the c5 z06 wheels all summer on a c7 non z51( here's the poop) the 17x9.5 worked great with 295/35/17's on front of non z51, the 18x10.5 also work well on front with 295/30/18 or 315/30/18. NOW THE REAR! the 18x10.5 with 315/30/18 hit my rear inner fenders lips so bad that they are gone. wrong offset by 20 mm( 8 th's of a inch) i even tried putting the z51 sways and shocks on to stop the hitting, did not help. i ordered forgeline ga3's off ben x and a new z51 vert, maybe if i used a 295/30/18 on rear instead of 315/30/18 i would have not lost the lips. enough
12-05-2014, 07:20 AM
#29
Instructor
The rear sticking out is an issue with aftermarket rims as well, at least that is what I hear. So right now there is no good choice for rear rims, other than a stock wheel? Then you have to deal with a 20" tire. I am told that Forgestar and TSW both stick out on the rear as well. I know some high end wheels have the correct rear offset, but I am not looking to spend $3000 - $4000 or more on track wheels. I will keep looking.
12-05-2014, 10:24 AM
#30
Race Director
Member Since: Jul 2007
Location: Texas Hill Country
Posts: 10,763
Received 2,379 Likes
on
1,238 Posts
The rear sticking out is an issue with aftermarket rims as well, at least that is what I hear. So right now there is no good choice for rear rims, other than a stock wheel? Then you have to deal with a 20" tire. I am told that Forgestar and TSW both stick out on the rear as well. I know some high end wheels have the correct rear offset, but I am not looking to spend $3000 - $4000 or more on track wheels. I will keep looking.
12-08-2014, 09:53 AM
#31
The TSW's are perfect and don't stick out at all. This set up is really nice and very lightweight. Nobody at TSW or their dealers wanted to sell this set up for the Z51 convinced they wouldn't fit the calipers but they clear easily.
Interlagos are the way to go with the Ferrari Challenge Tires. The grip is unbelievable, the tires were well ahead of the brakes. With new Big Brakes and this combo this car will be a beast on the track.
Interlagos are the way to go with the Ferrari Challenge Tires. The grip is unbelievable, the tires were well ahead of the brakes. With new Big Brakes and this combo this car will be a beast on the track.
12-08-2014, 01:43 PM
#32
Cray has 9.5" wide front wheels at 56mm offset and 11" wide rear wheels at 73mm offset. That gets 265/305 tires on the car. Or 275/305. Then the 18/19 tire set is about 1/2" less diameter than OEM while the 19/20 tire set is about 1/2" more diameter than OEM. But there's a better selection of extreme-performance tires in the 18/19 tire sizes or even in 19/19 sizes:
AD08 R
265/35-18, front
265/30-19, front
275/30-19, front
305/30-19, rear
RS3
265/35-18, front
275/35-18, front
305/30-19, rear
The problem is that some tuners are looking for an 11.5" wide rear wheel at 79mm offset for the 325/30-19. Or a 12" wide rear wheel at 79mm offset for the 335/25-20. And there aren't any street tires in 315/30-19 which would be good on an 11" wide wheel.
The next problem is that some tuners are looking for a square setup. I can help with a near-square setup with my Superleggera trick except that here too the rear wheel tops out at 11" wide:
Superleggera III
Front, 18 x 9.5, 59mm, listed as a front wheel for a C5
Front, 19 x 9.5, 59mm, listed as a front wheel for a C5
Front, 18 x 10.5, 59mm, listed as a rear wheel for a C5
Front, 19 x 10.5, 59mm, listed as a rear wheel for a C5
Front, 18 x 11, 53mm, listed as a rear wheel for a C5
Front, 19 x 11, 53mm, listed as a rear wheel for a C5 Z06
Rear, 19 x 11, 75mm, listed as a rear wheel for a C6
Rear, 20 x 11, 75mm, listed as a rear wheel for a C6
Then someone said they don't want to pay $3000 for track wheels ? Well, the Forgelines are about $1400 each and that's $5600 ! The Superleggera at about $900 each are about $3600. The Volk TE37 previously available for the C6 Z06 were about $1000 each and so the Forgelines are not too far away on pricing
.
AD08 R
265/35-18, front
265/30-19, front
275/30-19, front
305/30-19, rear
RS3
265/35-18, front
275/35-18, front
305/30-19, rear
The problem is that some tuners are looking for an 11.5" wide rear wheel at 79mm offset for the 325/30-19. Or a 12" wide rear wheel at 79mm offset for the 335/25-20. And there aren't any street tires in 315/30-19 which would be good on an 11" wide wheel.
The next problem is that some tuners are looking for a square setup. I can help with a near-square setup with my Superleggera trick except that here too the rear wheel tops out at 11" wide:
Superleggera III
Front, 18 x 9.5, 59mm, listed as a front wheel for a C5
Front, 19 x 9.5, 59mm, listed as a front wheel for a C5
Front, 18 x 10.5, 59mm, listed as a rear wheel for a C5
Front, 19 x 10.5, 59mm, listed as a rear wheel for a C5
Front, 18 x 11, 53mm, listed as a rear wheel for a C5
Front, 19 x 11, 53mm, listed as a rear wheel for a C5 Z06
Rear, 19 x 11, 75mm, listed as a rear wheel for a C6
Rear, 20 x 11, 75mm, listed as a rear wheel for a C6
Then someone said they don't want to pay $3000 for track wheels ? Well, the Forgelines are about $1400 each and that's $5600 ! The Superleggera at about $900 each are about $3600. The Volk TE37 previously available for the C6 Z06 were about $1000 each and so the Forgelines are not too far away on pricing
.
12-08-2014, 02:05 PM
#33
Race Director
Member Since: Jul 2007
Location: Texas Hill Country
Posts: 10,763
Received 2,379 Likes
on
1,238 Posts
12-08-2014, 05:14 PM
#34
Mine worked fine they line up with the fenders perfect maybe it was the width difference on the tire. I ran 19/ 295 rear and 18/275 front. I had no issues whatsoever with rubbing and honestly the offset looked perfect on the car.
12-08-2014, 06:24 PM
#35
Race Director
Member Since: Jul 2007
Location: Texas Hill Country
Posts: 10,763
Received 2,379 Likes
on
1,238 Posts
285s here. Took paint off the fender lips.
12-08-2014, 09:43 PM
#36
Instructor
LG Motorsports makes a 18/19 track wheel that is .5" wider than stock with the proper offset. Looks like a good solution?
Last edited by VThokies; 12-30-2014 at 09:35 PM.
12-25-2014, 11:31 PM
#37
Drifting
Has anyone tried a 325 mm Michelin Super Sport on a 19" x 11" Cray Hawk?
It's the same diameter as stock C7 rears and about 2" wider tread & cross section than 285's.
It's the same diameter as stock C7 rears and about 2" wider tread & cross section than 285's.
12-31-2014, 12:41 PM
#38
Burning Brakes
12-31-2014, 12:42 PM
#39
Burning Brakes
12-31-2014, 07:12 PM
#40
Instructor