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Discussion Starter #1
So being the person I am I try to push the limits. On the gen 1 IS I was the first to run a 19x10 with 275 rubber, what could I do with the F. Carefull measurements are one thing, but what happens once you finally get the wheels, the tires and you make things fit. This is my log, that will will need to back fill from today, of my quest for wide rubber and the lengths I will go to to get it.

The 305/30R19 size is great because its a rear takeoff from a Porshe OEM C4S. Besides being a great tire, its a bargain on craigslist. I found a set of 305R/235F Michelin Pilot Sport2 for around $400 used...very lightly.

This was the first round, fitted to my old 19x10 OZ SuperLeggeraIII wheels. Michelin Pilot Sport2



This would be fine, but then I thought, what about those that are not as extreme as I, how far could I go without modding the fender. Note I did mode the fender modestly here, but did not get into the extensive trimming that would be necessary to make this setup viable.

The only way, more custom wheels.

I detailed the rear, 3D scanned the caliper to detail the necessary clearance. The rear is the toughest fitment. Even after getting this info, its still about the design somewhat and the intersection of the pattern with the caliper. This is the leap of faith part, the part where you put the money down and hope for the best given the information you have and the assumptions you have made.


So onto the custom wheels. I ordered 2 sets, 10mm offset different, the length of the fender lip. The first set would be a conservative fitment, no or little fender rolling/trimming. The second, more aggressive, an "all out" fitment. Should I coin a new phrase, "Proper Flush"?

The first set is a 3-peice concave from Forged Specialites, the second a 2-piece forged wheel from BC.




The BC's arrived first, yesterday, so they were test fitted first. This would be the more aggressive setup, so no permenant fitting because I will need to do some more fender work.




I decided to mount a 305/30 RE050 today at my tire guy to be able to do detailed trimming later on. Suspension not fully loaded yet. phone pics
19x11 2-Piece Forged. I will make this work after I verify my "not so" aggressive fitment :)



Ultimately it may take a mixture of control linkages plus some additional camber, running -2.3 now, to get it all to come together. stay tuned.
 

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Discussion Starter #3
Yes the rear caliper clearance is a real variable and seems to be the limitation on a lot of styles. But not many people can answer the question unless they have personally test fit or have access to the CAD files.
 

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Discussion Starter #4
A few pics from today. The BC's with tires


The forged specialties without rubber yet.






 

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Discussion Starter #5
Well it was frantic but I managed to wake up early this morning and worked a little last night over a full moon to install the wheels for a test drive. I will probably have to pull them off tomorrow as we have been know to get a nice 2 ft storm aroung this time of year. Had a good crew to stretch out on some nice snow free canyon roads. Stopped in Central City for a few shots.

Car drives great with the 255/305 setup. No budging the rear in corners however for as low as I am I will probably have to increase spring rates or jack it back up a bit. Bottoming rubbing on hard cornering, but I really had to push it. This is also partially due to the added weight and perhaps the 10K springs cannot keep up with this setup and this ride height.

Finished things off in a overlook of downtown and the windy sky.

A note about the wheels/tires:
-I ended going with Nitto Invo due to availability and reasonable cost. Still waiting to fit a Conti EC DW in the same sizes.
-255/35/R19 Front 305/30R19 Rear.
-Front is a 19x9, rear is a 19x11
-Front diameter is 26" rear is 26.3"
-I have one rim barrel that was damaged in shipment, so I have another barrel on order so I can balance the right rear.
- The fronts right now are flat face but they can make a concave face with these offests and I may even order them for these wheels.
-Current offsets are very conservative to fit a STOCK car with no rolling at all. I am working on the next round which will be 10mm more agressive in back and 20mm more up front and will require fender work.
-Car has my MEGA arms and extended toe links installed and -2.1 camber last I aligned.














 

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So what happened with this? I'm due for a new set of tires and would like to explore the option of running 305 rears on stock suspension. I'd consider control arms if it is necessary and doesn't destroy tires with extra camber.

Is fig selling the wheels? or if not, what are the wheel dimensions?
 

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Discussion Starter #10 (Edited)
I am refurbishing the fs wheels to sell as we go some more concave centers for the front. The BC wheels are our focus. BC has come out with some outstanding designs in the last year.
 

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Discussion Starter #12
I just got the wheels back together after replacing the centers on the front with more concave versions as well as one of the rear barrels that was damaged during shipping. I will probably be putting them up for sale after I grab some pics. Stay tuned.
Fig
 

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Great news. Although I'd be happy with cheaper wheel options, you seem like the man to get wheels from.

Any chance you will sell forged 1 piece wheels? Also, are these safe for use at the track? I'm skeptical about 2 piece designs.
 

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Discussion Starter #14
We can do a single piece forged wheel in an 18 right now. From BC http://www.bcec.com.tw/wheel/en/cs-rs40.html

The above wheels are not really track wheels as they are too heavy. We run a lightweight Kosei wheel on the track with our rcomp tires and currently a 245 seems acceptable for traction, saves weight too.
 
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