New 18" Lightweight Rear Wheels for the C6 Z06

Friday, August 5, 2011 by Cy Chowattukunnel
With summer timOZ Allegerita Anthracitee here, it's time to get your Corvette out and go! Of all the cool sport cars that we get to work with, the Corvette is among my favorites because so many Corvette drivers drive their cars daily. What's the point of having a great car if you're not going to drive it? 

For C6 Z06 drivers that drive on the street and the track, rear 18" lightweight wheel availability has been limited until now. O.Z. Racing has introduced an 18x12 57mm offset Alleggerita HLT that's ideal for track use.

The anthracite painted (pictured above) and black painted finishes are currently available, while other painted finishes can be special ordered for delivery in approximately 60 days include blue, gold, orange, red and white.

Since the C6 Z06 typically comes with 18" front and 19" rear Original Equipment sizes, it's not possible to display the 18" wheels on our Upgrade Garage, so contact a sales specialist for assistance.

Combined with the 18x10 40mm offset front size ($399* Anthracite, $414* Black and $429* other finishes) you can run the following custom fit track fitments of 345/35-18 Hoosier R6 or A6 in the rear and either 295/30-18 or 315/30-18 in the front.  These custom fit track fitments are aggressive fitments where the edge of the tire will be further out towards the fender. Suspension modification may be required to clear the fender lips.

This 18" combination weighs 3.8 lbs. less per rear wheel compared to the 345/30-19 Hoosier R6 on 19x12" O.Z. Racing Ultraleggera HLTs. 3.8 lbs. Less rotational weight will significantly improve braking and accelerating at the track. Read "Road Wheel Weights Can Affect Your Vehicle's Show...and Go" to see how lighter wheels can affect a vehicle's ability to accelerate, brake and corner.

Keep in mind that the above tire sizes are custom fit options, so whether or not you rub depends on a number of factors:

1) Suspension modifications and/or suspension wear
2) Alignment, specifically camber setting
2) Road conditions
3) Tire tread width
4) Amount of load the vehicle is carrying  
 
A custom fit is a size or part that you can test fit but not drive on. I would also recommend getting anecdotal feedback from other drivers with the same vehicle before making your purchase.

*Prices subject to changeBlue Z06 Corvette

Comments on New 18" Lightweight Rear Wheels for the C6 Z06

Sunday, November 11, 2012 by John Merdink:
I'm looking for 18"X 10" wheels all the same back spacing.Plan to run 18/30/315 at all 4 corners.
Wednesday, November 14, 2012 by cy:
The 18x10 40mm offset OZ wheels listed above will fit the rear as well.

There's no data on how this set-up will effect overall chassis balance & traction control systems.

Thanks.

Cy
Sunday, December 30, 2012 by David S:
My CCW's were 18x11 F and 18x12 R to run 315 and 335's. Can I get away with an inch less in the front and still run a 315?
Wednesday, January 2, 2013 by cy:
If you drop to 18x10's, you're probably better off going with 295/30-18 fronts instead of 315/30-18 fronts.

295/30-18 on 18x10's will give you better steering response & wide enough front tire give you a neutral handling bias.

We haven't tested either set-up so I would also get feedback from other Corvette drivers the forums we sponsor: corvetteforum.com

Cy
Sunday, June 16, 2013 by Jim:
Looking for a pair of 12" wide x 18" wheels for my 2003 corvette. I have the flared fenders on rear. I will only be using the wheels for my drag radials 345 x 35 x 18. Any help would be appreciated.
Thanks
Jim
Tuesday, June 18, 2013 by cy:
Jim, we have a 18x12 ET57 23lb OZ Allegerita that you can use as a drag wheel on your C5. Compared to the OE 18x9.5 ET65 rear wheel, the outside edge of the wheel will be 39.75mm outboard and the inside edge of the wheel will be 23.75mm inboard. Given these differences we consider this to be a "custom" size on a C5 but your flared fenders will definitely help. Standard Anthracite finish is $454, Black is $474 and Special Order Colors are $484. This wheel isn't listed on online so please call me to order. Thanks. Cy.
Monday, October 28, 2013 by Gary:
I'm looking for the widest 18" wheel & tire on all 4 corners of my '06 zo6. I don't wish to modify the suspension or body other than negative camber. Please advise.
Gary

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