Jump to content
Email-only Log-Ins Coming in December ×

IGNORED

How to mesure offsets?


240Zdragon72

Recommended Posts

I am looking at these nice WORK wheels VS-XX style. The website has a Specification Guide which shows rim depth in mm and then shows the offset for each size. I know the Z requires a Zero offset. How would I go about doing the math to findout what offset I can use with say a 37mm rim depth? Here is the website to the wheel and chart I am looking at. Thanks

http://www.worksuperwheels.com/wheels/vs_xx.html[/ur]

Link to comment
Share on other sites

They are showing you what the rim depth would be with the various offsets. I would think you would want the rim with the minimum offset so your spacer would be minimized. Also the wheel would have a deeper look to it.

I also assume you are referring to a 7" wide wheel without coilover suspension.

Link to comment
Share on other sites

Several places sell them like MSA and others. The "basic" parameters you need to remember is without coilovers you can have up to 4" of backspacing, with coilovers you can 5" of backspacing (assuming you want to be able to rotate wheels for wear periodicly). Actual wheel widths when measuring a wheel for backspacing are about 1" wider than advertised (i.e. a 7" wide wheel is actually 8" when measured thus you get a 4" backspacing which equals zero offset). Have I confused you enough?

Link to comment
Share on other sites

No, that explains a lot! thank you for the input. I have searched MSA for suspensions and I was going to try the Tokico spring and Illumina strut combo. It might lower the car 1" front and back. Will this be a problem with the 17" rims? What I am saying is will I have to roll/ cut my fenders to fit?

Link to comment
Share on other sites

A word of caution with the Tokico springs, they are progressive springs so if you are going to use your car for any kind of racing, it will not work well, but for the street they are fine.

With 225/45-17 on a 7" rim, you might have to roll the rear fenders each tire brand is a little different.

Link to comment
Share on other sites

There isn't a problem with Tokicos they make high quaility stuff. The Illuminas are top notch. The issue is using a progressive spring versus a straight rate spring for racing. Progressive springs as the name implies gets stiffer the more you compress it. Straight rate springs are the same stiffness right from the start. So for the street the progressive spring gives you a nice ride, but on the track the "soft" part of the spring makes the car loose. So the choice is yours, comfort on the street or ready for the occasional track use. MSA and Suspension Techniques as well as others make straight rate springs that will fit into the stock perches and lower your car at the same time.

Link to comment
Share on other sites

A word of caution with the Tokico springs, they are progressive springs ...

Is this only for a 240Z tokico illumina package? I am currently installing the illumina shock/spring package on my 280Z, and as far as I can see, they are not progressive springs. The spring wire seems to be constant diameter, and the coil spacing is uniform up and down the spring. Where did you get/find/see the info that the tokico springs are progressive?

Just wondering...

Thanks.

Link to comment
Share on other sites

The Tokico spring & shock packages sold for the 240Z from ebay. I put one on a Z Club member's 240Z. Since he autoxes the car we will be changing the springs to Suspension Techniques.

I'm looking for what characteristic(s) of the springs that were in your package tells you that the springs are progressive. I've seen the Eibach progressives, and they have varying coil spacing along the length of the spring (the Eibachs aren't even available for the 280; just the 240). Did the ones you get have varying coil spacing? Or is there some other characteristic of progressive rate springs that I should know...just looking for info for the future here. I'm working on my 280Z now, but the 240Z is coming...

Thanks.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...

Important Information

By using this site, you agree to our Privacy Policy and Guidelines. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.