acrc6

I found some 18X10.5 rims on CorvetteGuys.com and was thinking of putting these on the back of my 07 C6 so I would be able to run Nitto 555R2 or Toyo R888 (305/35/18) instead of having a pair of 8.5 fronts sent to Weldcraft. I have a couple questions:

1. Will running stock size up front be ok? Any AH/TC issues?
2. The offset of the 10.5 inch rims are +58mm. The stock I believe is +56mm. Will this cause these rims to fit weird?
3. Will these tires fit ok on a 10.5 inch rim?

Thanks for any feedback anyone can give me.

timd38

I believe the offset is wrong. I believe you need around 79mm.

acrc6

The reason I ask is because people are sending out the stock fronts to have 2 inches to be welded at WeldCraft and the stock offsets are +56mm. I was wondering if the 2mm difference (+58mm for the 10.5 inch rims) would be noticeable.

Thanks.

timd38

Yes, but they are putting the 2"on the inside increasing the offset.

I could be way off, but don't think I am.

Look at these. http://www.tirerack.com/wheels/Wheel...All&sort=Brand

LS1LT1

Should be fine.




Yes, it very likely will.




Yes.




It will be slightly noticable, yes.
I only say that because an 18x9.5 rim with the C5 offset (65mm) fits a stock C6 almost perfectly.
A 10.5" rim with only a 56mm or even 58mm offset on a car that comes stock with rear rims that are 10" wide with a 79mm offset is not going to sit perfectly in the wheel well.
Widened front (18x8.5) wheels are an entirely different deal, those do tend to fit the wheel well better.

dennis50nj

here try this the back offset is 79mm19x10
http://www.1010tires.com/WheelOffsetCalculator.asp
i have seen them on a few c6s and they stick out to far

dbratten

The 2 mm offset (0.08") you ask about doesn't really matter. What does is that the 10.5" wheel with 58 mm offset sits out 1" more than a 19x10 79 mm offset wheel. Place a ruler against your tire and see if 1" is too far out for your liking. Some are ok with it, some aren't.

--Dan

acrc6

Thats what I needed to know. Im not diggin' the 1" farther out. I guess my only other option is getting an 8.5 inch rim widened.

Would the 8.5 inch rim widened to 10.5 sit ok in the back? Ive seen Spin's pics on his widened rims, but his are 11"; wasnt sure if the .5 in less would cause the wheel to be more inside the wheel well.

Thanks everyone for the help.

SpinMonster

Your error is that you arent aware of what offset means. Offset is the distance from the midpoint of the wheel to the hub. The width of the wheel changes the offset. It isnt fixed. In other words, if you take a front wheel and widen it by two inches, you then change the offset because you added 2 inches to the width.

A 8.5" wheel that was 56mm positive offset then going to 10.5 would then be a 81.4mm offset.

Obviously if you add 1/2 an inch less to the back of the wheel, it will reach 1/2 less to the inside. It fits.

As far as trying to find some cheap repro wheel to fit, at 500 bucks a pair, they are weak cast garbage. Its 700 or so for what works right and is strong. House of wheels has the stock fronts.

c6 batmobile

The man knows his stuff. When he posts I listen. I suggest you do the same.

acrc6

Spin,

Thanks for your clarification on this. I admit my knowledge of offsets is something I lack. This has been extremely helpful. I wasn't aware these were repros. I will take your suggestions and look into House of Wheels for my rims.

So in lamen's terms, all I need to do is purchase a set of 8.5 fronts, send them to WeldCraft, have 2 inches added and then Im good to go? The rims would fit flush and would fit the 305/35/18 Nitto 555RII? I dont need any spacers?

Thanks again.

SpinMonster

All instructions are in the TRACTIONmonster thread....Its 2.5 inches added to the stock fronts for the 305/35/18 at 11"

haljensen

acrc6; you need to read and understand the link that dennis50nj supplied above. Spin explained it but you need to understand the relationship of offset and tire/wheel location in the wheel well.

There are physical limits as to how much offset can be used, the tire/wheel touching the outside of the fender isn't the only consideration. The tire/wheel can also interfere on the inside with the suspension and frame.

If there was a simple, cheap way of putting 325mm tires under the rear of a stock C6 there would be hundreds of Vendors fighting for the business.