Ideal wheel setup for autocross/roadracing type suspensions
03-02-2012, 11:04 PM
#27
What he said!
I got this setup. 17x11 zr1 wheels on all 4 corners from OE wheels. I autocross and race at my local spectator drags which requires both launching and turning. There's a lot of 315/35/17 tire options too. I've been pretty successful with this setup.
Fitment requires minor fender modification. I used the frrax.com guideline thread for fitment.
I got this setup. 17x11 zr1 wheels on all 4 corners from OE wheels. I autocross and race at my local spectator drags which requires both launching and turning. There's a lot of 315/35/17 tire options too. I've been pretty successful with this setup.
Fitment requires minor fender modification. I used the frrax.com guideline thread for fitment.
03-03-2012, 08:08 AM
#28
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On my setup I went with a 50mm offset zr1 17x11 in front and used a 3/8ths sized hubcentric spacer. I also ground the small nub that sticks out from the spindle. You definitely need a spacer if using 50mm offset on the front.
I also went with some newer slightly longer ARP wheel studs for safety and hammered a lip upward in the 12 o clock position inside the fender.
I definitely suggest looking up the frrax how-to on this and completely rely on it
I also went with some newer slightly longer ARP wheel studs for safety and hammered a lip upward in the 12 o clock position inside the fender.
I definitely suggest looking up the frrax how-to on this and completely rely on it
03-03-2012, 08:31 AM
#29
Launching!
The 710s are more tolerant of camber challenged cars due to their rounded profile (the Hoosiers are much more square). This results in a bit less wear. They are also more tolerant of, shall we say, "caveman" type driving.
The Hoosiers demand you drive them "properly" but they are ultimately faster. Depending on where (surface types) I've run, I've gotten anywhere from middling to surprisingly good life out of them.
03-03-2012, 07:16 PM
#30
ive looked everywhere it seems for pics of 17x11 zr1 DD all around on a firebird, and have only found 2-3 really bad pics 
. I read the sticky on frrax, and it seems that the 50mm 17x11's will fit with a .375"-.500" spacer in the front. Everyone seems to have different results with the rear as far as needing them or not. Probably going to try without on the rear if I can and just buy some ARP studs for the front with a 12mm spacer. Where are people buying spacers from? Another question I have is...Are the front 17x11's going to negitivly effect the cars braking?
Current brake mods:
Baer "claw" Track Front brake kit with 13" rotors and dual piston calipers
Braided lines all around
SJM line lock and ABS Delete w/ wilwood proportioning valve
. I read the sticky on frrax, and it seems that the 50mm 17x11's will fit with a .375"-.500" spacer in the front. Everyone seems to have different results with the rear as far as needing them or not. Probably going to try without on the rear if I can and just buy some ARP studs for the front with a 12mm spacer. Where are people buying spacers from? Another question I have is...Are the front 17x11's going to negitivly effect the cars braking? Current brake mods:
Baer "claw" Track Front brake kit with 13" rotors and dual piston calipers
Braided lines all around
SJM line lock and ABS Delete w/ wilwood proportioning valve
Last edited by The Batman; 03-03-2012 at 09:03 PM.
03-03-2012, 07:27 PM
#31
Ive seen many people running c5DD in 18x10.5 all around with the same mods to fit. I havent done a lot of tire searching yet but I seem to find that 315/35/17 are about $100 cheaper per tire than the 315/30/18. Thats with Nitto NT01's. But it seems like people on frrax are saying 18's are cheaper?
03-03-2012, 07:45 PM
#32
Launching!
You WILL have to roll the fender lips either way however.
Get the wheels, mount them up, measure how much spacer you need. Simple.
I've had a handful of different thicknesses made by Alan Blaine (Blainefab). He is on FRRAX.
FWIW this was when I had the OE wheels. I had the CCWs built to need none.
The big increase in unsprung, rotating weight (those OE wheels are H-E-A-V-Y) WAS noticeable for me though; both in braking AND accel.
