Frosty

iTrader: (17)

So far I'm the highest bidder on a set of C6 rims...

Well...the problem is I just noticed the front are the same size as the backs...18x10.5, both 56mm offset)

Am I screwed?

I hope someone outbids me lol

AW/whiteZ-28

I remember seeing a z28 with 18x10.5 z06 wheels all around. I think it had the same offset too? I'm pretty sure they work, but if you do get outbid just don't bid again...

TTSSZ

iTrader: (8)

I think you'll need a 7/32" (6mm) spacer.
50mm would just make it.
plus with the 18" rim its a 1/2" higher on the spindle
so it will be close.

Frosty

iTrader: (17)

Damn it

MattIROC

iTrader: (19)

retract your bid?

Frosty

iTrader: (17)

I'm going to try.

VSJ

iTrader: (12)

Just see if he sells the 18.9.5's as well. Im sure he would switch them for free.

CrabhartLS1

you could probably find a trade if they're brand new.

SPANKY LS1

iTrader: (24)

I have 18x10.5 +56 all around on mine, the front tires are 275/35/18, and the rear tires are 295/35/18, both fit like a glove, no problems whatsoever.

Frosty

iTrader: (17)

Thanks Spanky.

That puts my mind at ease if I get stuck with them!

SPANKY LS1

iTrader: (24)

I'm going out in a little bit, I can take some more pics if you want and post them tomorrow. The 10.5s look MEAN on the front, and at stock height, don't rub at all, even at full turn.

Shawn

Frosty

iTrader: (17)

Please do!

TooSlow02

I have 18"x10.5" with an even deeper 58mm offset all the way around. They fit perfectly, no spacers and no rubbing. 56mm offset will be no problem. My friend put some 18"x10.5" Z06 wheels on his TransAm with no problems, too. They were 56mm offset.
Some pics of mine:

FenixSS

iTrader: (3)

So 58mm all around would be ok? There's that Sticky by XztaZ28 that says 56mm would be max, or does it depend on the type of wheel? ie C6 vs. Z06 motorsports? If 58 will fit, then FAQit, I'll go with 18x10.5 all around motorsports.

TooSlow02

They fit great. I highly recommend picking them up.

FenixSS

iTrader: (3)

Ok, here's a good question then. I'm getting the LG2 Super Springs, it's stated that it drops ~1.75 front and rear, and I'm also getting 4th gen Konis, as well as LTs, Subframes, and more. Would the 58mm still fit?

TooSlow02

You may have to re-center the rear with an adjustable panhard rod. The fronts will still fit fine. My friend's T/A is dropped with Eibach Sportlines, which ended up lowering it just over 2" in the front and 4" in the rear. He's also sitting on 18"x10.5" all the way around. He has no issues at all, even without the adjustable PHR. You shouldn't have any problems.

joblo1978

iTrader: (14)

I would be worried about lowering though with that width. 18's on these cars need lowering IMO.

FenixSS

iTrader: (3)

May sound odd, but I'm unfamiliar with panhard rod, I forgot to mention that I'm also having a BMR Xtreme Duty TQ arm installed, will the TQ Arm affect the panhard rod?

TooSlow02

The torque arm won't have an affect on the PHR. The panhard rod is the lateral locating member for the rear axle housing. It's the stamped metal bar that bolts to the driver's side of the rear axle housing and to the passenger side of the body, running behind the axle to control side-to-side movement. Due to GM's "production tolerances" most rear axles in F-bodies aren't precisely centered to the car body. That means that one tire will stick out away from the car farther than the other. The difference is slight, though. But a lot of times when you go with tires 295 and up you have to buy a PHR that's length adjustable to center the rear axle (especially if the car is lowered). Otherwise one tire might rub on the inside of the wheelwell, and the other might rub on the lip of the quarterpanel. They aren't expensive and very easy to install. Well worth the money. There are quite a few companies that make quality pieces (UMI, BMR, LGM to name a few), so search around.