Stoptech has a template that you can print out and then cut to test the clearance on your wheels. I am going out on a limb and say if the Stoptech ones clear you should be in good shape for the Wilwoods, unless someone tells me other wise

http://www.stoptech.com/tech_info/wheel_fitment.shtml

 

I printed that stoptech diagram for a ST-40 caliper. I tested it out on my 5Zigen FN01-RC 17x8 +43 wheels. It barely touches the caliper. So I would need a 5mm spacer. I also tested it on my OEM Mitsu EVO 8 Enkei wheel which is 17x8 +38. Plenty of clearance with that wheel. So I'm pretty confident that your stock wheels Cato will not clear the Wilwood caliper. You're going to need probably a 5 or 10 mm spacer with longer wheel studs. Or better yet, get new wheels with the proper offset and spoke design.

 

thanks dklau33 for checking it out. So that means
i have to upgrade my 17" stock wheeels (to 18" stock?)
before i upgrade this brake kit
Mike

 

Say it ain't so!

 

I want to make things clear that this kit will fit 17" wheels meaning it will fit inside the wheel. The real question is will the caliper touch the spokes of the wheel when you try to mount the wheel to the hub? You want at least 2mm of clearance between your spoke and the caliper. So if your current stock 17" wheels won't work, then you will have to choose another set of wheels that are at least 17" in diameter and must have a proper offset and spoke design. Most likely will have to use a +38 or lower offset. You probably can't use a wheel that has a deep dish design either. But really there is no certain formula and a little trial and error may be encountered. Test templates like the ones Stoptech provide are very helpful and can save lots of headaches and money. Maybe Wilwood has something similar.

 

I emailed Dave @ ArizonaZCar about that two days ago, but haven't heard back yet. I have decided to (when my new wheels come in) mount them up to a fellow G-driver's 14" Stoptech kit to check for clearance of the calipers...

 

Am taking some photos and measurements for wheel clearance today and will post later tonight or tomorrow.
Dave

 

Are your new wheels 18's or higher? Because you need at least 18's to fit over a 14" rotor.

 

The 6-piston caliper height above the mounting surface of the wheel is approx. 1.5 inches so you'll need at least that between the inside of the spokes and where the wheel meets the rotor center.
The 4-piston caliper dimension is approx. 1.37"
The inside edge of the caliper is about 4.5" from the axle center.
I was at the Infinity dealer on saturday: The coupe wheels look like they have plenty of room, The stock sedan wheels looked too tight but the optional 19" wheels had lot of room in 'em also.
Hope this helps .
Dave

 

I printed the layout as well and tried on the stock 17x7 sedan 5 spoke wheel with +45, it touched the spokes. I used the 335mm diagram or the larger one, i think that's for the 14" caliper. I am going to take off one of my 19" wheels to see if it fits.

 

DIameter of the wheel isn't an issue as long as they're 17" or larger.
With my 13" rotor the inside diam. of the wheels needs 14" to clear.
see photos
Dave

 

Dave, great info again. This is really helpful and awesome customer service. I think you're 4-pot system will clear my FN01R-C wheels.

 

Can you please explain what the rotor center is? Better yet, can you take a picture?

 

Gents,
I just measured my wheel using the stoptech diagram for the 355mm setup, the larger one. The overhang is exactly 1 and a half inch and it just barely touches my wheel. My wheel measurements are 19x8.5 with +42. So in theory if i use a 3-5mm spacer, i would have enough room for dave's 6 piston caliper. Currently i would clear the 4 piston caliper if the measurement is 1.37 inches. But who the hell wants a 4 piston when you can have the 6 piston. Hope this helps. Now anyone with offsets of +38 should be fine on their G sedans. Dave do I at least get a discount for all the hard work?

 

KrazyEd

Look at Dave's first measurment post. Click Here

Look at the third picture. The rotor center is the red rotor hat. In the case of a stock G35 rotor that would just be the center of the rotor where your wheel touches your rotor when you mount it on. Measure from that point out the to closest point on your spokes of your wheel.