Hey guys,

Well Mike Shultz has been hounding me about posting the wheel spec’s for quite some time now. So here we go…..

This is what is on his car right now..

Front wheel dimensions: 18x8 w/ 6.375 back spacing

Rear wheel dimensions: 18x9 w/ 7.500 back spacing

Now as you all may recall I originally wanted to go with Forge Line wheels. The issues with them were the front wheels. Their wheel centers would not clear the Brembo’s. However their wheel center’s for rear would have had the “lip” we were going after. That’s what moved us to Boze wheels. Boze’s wheel centers cleared the Brembo’s, but we lost the rear “lip”. This is what I was told by them.

I have attached two sheets for those interested in putting custom wheels on Marks and T-birds. Remember that the spec’s I have attached are for front Brembo brakes! With that said and what I have learned with 4-6 hours of measuring with an air ride suspension vehicle (it was fun let me tell ya….).

With the package that is on Mike’s car without the ½” wheel spacer we could have gone with:

Front wheel: 18x8.5 w/ 3.125 front spacing ~ 6.375 back spacing

-or-

18x8 w/3.125 front spacing ~ 5.875 back spacing

That would add a ½” to the front “lip” with Brembo’s
Now for the rear wheels we could have done some major changes here. There is a 2” space between the rear brake caliper bracket (cobra rotors) and the wheel spoke with the ½” wheel spacer. So we could have gone with:

Rear wheel: 18x9.5 w/ 4.000 front spacing ~ 6.500 back spacing (with this set-up the
rear sway-bar will have to be moved in ~1/4”)

-or-

18x9 w/ 4.000 front spacing ~ 6.000 back spacing

With the rear wheel spec’s I gave you, you would have around a 3” “lip”

All of these measurements will keep the front and rear wheels tucked under the wheel
arc.

Also, if your running cobra front brakes, add 1.00” to the front spacing and subtract 1.00” to the rear spacing. That would allow an additional 1” to the front wheel “lip” and still clear the front brakes.

I hope this helps and clears up any questions.

Aric

This post was last modified: 01-30-2008 09:32 AM by ARIC@INJECTED.

Wow Aric, Thanks a million for posting this! I had no idea that you had to go through so much to make this work. I am very grateful, and could not be happier with the results of your hard work on this build!

Thank You!! I think this info is going to be very helpful!

Thomas

Thought I would add some visuals to compliment Aric's numbers


Tires:


Front - Toyo Proxes T1R 255/40ZR18

Rear - Toyo Proxes T1R 285/35ZR18