well im getting new wheels..........i have decided to go with the painted zo6 wheels...........(i thought about the chrome ones, but then decided that if i didnt like the painted ones i would have them dipped later).

ok so here is my quesiton.................i need to know what OFFSET and tiresize WILL fit on my car with NO problem (i know from reading on here differenet people experience different things even with the same wheel/tire combo......so i just need to know what will fit on the rear without spacers and what will fit on the front with rubbing........because i am mainly buying the for autox thus the reason they must not rub under HARD turning)


so im getting the 17x9.5 wheels for the front and the 18x10.5 wheels for the back.

The ones im looking at have an offset of

guy says "bolt pattern is: 5 lug 4.75".................."front wheel 17"x9.5 / 56 mm"..........."rear wheel 18"x10.5 / 56 mm"


help me guys...........THANKS

Scott

EDIT: regarding tire size......i would like a tire with an aspect ratio that will NOT affect my speedo accuracy (or that will affect it as little as possible)


thanks again guys............

Scott

 

Check these out - seem like a good deal

18" ZO6's

 

Sorry - I will try again

18" Z06's

http://cgi.ebay.com/ebaymotors/18-Si...QQcmdZViewItem

 

zo6 wheels

these are the ones that im looking at


i just want to make sure they will fit NO problem

 

The fronts will be fine with the 56mm offset. The typical tire size would be 275/40-17. The worst you would ever see with that combo is minor rubbing of the tire on the plastic fender liner at full lock and full compression.

The back will probably be a problem. A 10.5" wide wheel with a 56mm offset has the same backspace as the popular 17x11 50mm ZR1 wheels... about 7.93". With a decent wide tire on the wheel, the inside edge of the tire may hit the inside fender liner. You will also have to cut the projecting edge off the jounce bumper brackets, to prevent them from catching the inside edge of the rim as you jack the car and the axle goes to full drop. In extreme cases, it may be necessary to recenter the body over the rear axle with an adjustable panhard rod. Some people have none of these problems.... others have several or all. You need to get feedback from someone who actually has these wheels on their car. Are you sure the 18x10.5's are 56mm offset? The factory wheels are 58mm offset - just makes the problem worse.

Possible tire sizes would be 275/35-18 (may look a little stretched on a 10.5" wheel), 285/35-18, 295/35-18 (minor 1% speedo correction) or 315/30-18.

 

what are the jounce bumper brackets??? and if i cut the edge off of these they will fit no problem????

also i am planning on lowering the car so i will be getting a adjustable panhard rod anyways........

if possible it would be great if u took a picture of the bumper bracket thing and what exactly i need to cut

thanks for all ur help


Scott

 

and yeah, the guy said that the rears were 56mm offset

 

Cutting the edge off the jounce bumper bracket eliminates that problem. Doesn't solve the problem of possibly needing to hammer the inner fender liner.

Jounce bumper bracket, with projecting edge ground off:

http://cjcfo.fbody.com/members/injun...A/FendMas2.jpg

Heavy duty inner fender carnage.... but that was also needed to fit 28" slicks"

http://cjcfo.fbody.com/members/injun...A/Drivhamr.jpg

Doesn't look all that bad with a fresh coat of rubberized undercoat.

 

would a 56 mm offset in the back require spacers?????? so it didnt rub

 

You could add a spacer to move it away from the inner fender. 1/4" or 5/16" might be enough, depending on the specific tire you put on the wheel. Some people do not like to use spacers. They do increase the stress on the studs, and may require longer studs for proper thread engagement in the lugs.

 

ah.............ok well i guess spacers are out (dont wanna fool with that) ok, well thats all i really needed to know. I just wanted to make sure these wells would FIT before i bought them (ok, so cutting the jounce bumper bracket is the only thing i have to to do, GREAT) and depending on which tire i go with as to whether i will have to move the fender well in.


which tires fit ok??? (without regard to speedo change)

i appreciate all ur help man,

Scott

 

Did your car come from the factory with the 245/50-16's (25.65" diameter)?

275/35-18 = 0.26% error = 60.2 MPH indicated at a true 60 MPH

285/35-18 = 0.81% error = 59.5 MPH at a true 60 MPH

295/35-18 = 1.89% error = 58.9 MPH at a true 60 MPH

315/30-18 = 0.80% error = 60.5 MPH at a true 60 MPH

That is about as close as you are going to get. Its relatively easy to have the tire diameter corrected in the PCM.

 

yes my car came with the 245/50/16 tire.................ok, those sound GREAT..



as far as FITMENT?? i understand that the larger the tire(the more **** to rubbing there is...........however which tire is the least **** to it in the back??? from what ive read the front 275/35/17 will not run on the front, but out back is what i am concerned about.

now, if i went with two of the sizes listed above (say the 275/35/17 tires and the 295/35/18 tires............there percentage of speedo errors are different) would that cause any unwanted wear in the tires because one full rotation on one tire wouldnt be the same as the other (speaking of distance it covers under rotation that is) would that cause any unwanted wearing or would i see and unwanted vibrations from it???? or ANY other side effect????


Again i appologize for all the long questions, but i just want to make SURE before i buy (i like to do my homework you could say)

THANKYOU for all the help


Scott

 

You would not notice those tiny differences in diameter... inflation pressure and tire wear cause larger discrepancies in a set of 4 identical tires.

As far as which ones will rub in the back.... the "295" (11.6") and "315" (12.4") numbers are the width of the tire in millimeters at its widest point. The wider the tire, the more likely it will rub.

But you need to look at the actuall dimensions for the specific tire you want to use. The "size" system for tires is "nominal"...... not all 315 tires will be exactly the same width. You need to look at the manufacturer's actual dimensions. I know the arguement is frequently made that a 315/35-17 Nitto Drag Radial is so much narrower than a 315/35-17 BFG Drag Radial that it fits "OK" on a 9.5" wide wheel, and does't rub when you put it on an 11.0" wide wheel. Each tire is a bit different, even if the size is the same.