Official Aggressive Wheels & Fat Tires Thread
#2926
Registered User
iTrader: (20)
Alright, I've got the itch to go all out with my autocross setup once my current tires wear out. I'm going for 295F 315R x18 Hoosier A6, and I want the widest contact patch possible (widest wheels). I'm considering a 18x11 +28 front, 18x12 +36 rear. I'd rather overestimate the offset and use spacers to get it perfect. I used some of the setups in this thread and an online calculator to come up with what I think will work. Has anyone tried something similar? I have rolled fenders and will pull them slightly if I have to, but I want to avoid any major fender work for now.
BTW - I'm looking at the Forgestar F14. They're available in 18x10, 18x11, and 18x12, in a wide range of offsets. Similar weight to a RPF1, and less $$ than CCW, etc.
BTW - I'm looking at the Forgestar F14. They're available in 18x10, 18x11, and 18x12, in a wide range of offsets. Similar weight to a RPF1, and less $$ than CCW, etc.
#2928
Super Moderator
MY350Z.COM
MY350Z.COM
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Alright, I've got the itch to go all out with my autocross setup once my current tires wear out. I'm going for 295F 315R x18 Hoosier A6, and I want the widest contact patch possible (widest wheels). I'm considering a 18x11 +28 front, 18x12 +36 rear. I'd rather overestimate the offset and use spacers to get it perfect. I used some of the setups in this thread and an online calculator to come up with what I think will work. Has anyone tried something similar? I have rolled fenders and will pull them slightly if I have to, but I want to avoid any major fender work for now.
BTW - I'm looking at the Forgestar F14. They're available in 18x10, 18x11, and 18x12, in a wide range of offsets. Similar weight to a RPF1, and less $$ than CCW, etc.
BTW - I'm looking at the Forgestar F14. They're available in 18x10, 18x11, and 18x12, in a wide range of offsets. Similar weight to a RPF1, and less $$ than CCW, etc.
Rear i would go 11.5 +25 , which is also going on know rear offsets to a close to clearing the inside.
#2929
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I'd go 18x10 +25 front and 18x11 +30 rear and fit those tires under the fender. Your wheel idea isnt going to put all the tire under the fender anyway so why not run those sizes with 305 f 335 r?
The 18x11 +30 inner clearance
The 18x10 +25 inner clearance
The 18x11 +30 inner clearance
The 18x10 +25 inner clearance
#2931
Registered User
iTrader: (20)
Thanks SoCal07HR for the pics and measurements. That is extremely helpful.
I think the magic number for inner clearance on an 11" wheel up front is +16. The wheel would extend outward 1" more than the 18x10 +28(with spacers) RPF1 that has been used with a 305/30 tire. However, the 295/30 tire would be shorter and bulge much less on the 11" rim. Another calculator I used shows the 295 tire on an 11" rim extends 7mm more than the 305 on 10". I think that could be made to fit with only a slight fender pull, if even that.
In the rear, maximum offset for inner clearance of a 12" wheel looks like about +26. According to the calculator, the 315 tire on a 12" wheel will extend 17mm farther than the one in the below pic (315 on 18x10.5 +43). There is some space leftover there, and the rest could be handled by rolling flat and a slight pull. 2 degrees of camber will help too.
I know the safe bet would be a 10/11" stagger, but I don't think I will be satisfied unless I know the envelope has been thoroughly pushed to the limits. I'd probably end up spending money down the road on a wider setup. I've looked all over, and the only Zs I've seen with 11-12+ widths are the hardparking hellaflushers with 90 degrees camber and 225 tires.
I think the magic number for inner clearance on an 11" wheel up front is +16. The wheel would extend outward 1" more than the 18x10 +28(with spacers) RPF1 that has been used with a 305/30 tire. However, the 295/30 tire would be shorter and bulge much less on the 11" rim. Another calculator I used shows the 295 tire on an 11" rim extends 7mm more than the 305 on 10". I think that could be made to fit with only a slight fender pull, if even that.
In the rear, maximum offset for inner clearance of a 12" wheel looks like about +26. According to the calculator, the 315 tire on a 12" wheel will extend 17mm farther than the one in the below pic (315 on 18x10.5 +43). There is some space leftover there, and the rest could be handled by rolling flat and a slight pull. 2 degrees of camber will help too.
I know the safe bet would be a 10/11" stagger, but I don't think I will be satisfied unless I know the envelope has been thoroughly pushed to the limits. I'd probably end up spending money down the road on a wider setup. I've looked all over, and the only Zs I've seen with 11-12+ widths are the hardparking hellaflushers with 90 degrees camber and 225 tires.
Last edited by jarrodh77; 01-18-2012 at 04:14 PM.
#2932
Registered User
iTrader: (20)
I talked to a vendor tonight who can get them for $1400 shipped. Wait time is 8-12 weeks, but they only require $700 down at the time the order is placed. I'm close to pulling the trigger.
#2933
New Member
iTrader: (44)
Thanks SoCal07HR for the pics and measurements. That is extremely helpful.
I think the magic number for inner clearance on an 11" wheel up front is +16. The wheel would extend outward 1" more than the 18x10 +28(with spacers) RPF1 that has been used with a 305/30 tire. However, the 295/30 tire would be shorter and bulge much less on the 11" rim. Another calculator I used shows the 295 tire on an 11" rim extends 7mm more than the 305 on 10". I think that could be made to fit with only a slight fender pull, if even that.
In the rear, maximum offset for inner clearance of a 12" wheel looks like about +26. According to the calculator, the 315 tire on a 12" wheel will extend 17mm farther than the one in the below pic (315 on 18x10.5 +43). There is some space leftover there, and the rest could be handled by rolling flat and a slight pull. 2 degrees of camber will help too.
I know the safe bet would be a 10/11" stagger, but I don't think I will be satisfied unless I know the envelope has been thoroughly pushed to the limits. I'd probably end up spending money down the road on a wider setup. I've looked all over, and the only Zs I've seen with 11-12+ widths are the hardparking hellaflushers with 90 degrees camber and 225 tires.
I think the magic number for inner clearance on an 11" wheel up front is +16. The wheel would extend outward 1" more than the 18x10 +28(with spacers) RPF1 that has been used with a 305/30 tire. However, the 295/30 tire would be shorter and bulge much less on the 11" rim. Another calculator I used shows the 295 tire on an 11" rim extends 7mm more than the 305 on 10". I think that could be made to fit with only a slight fender pull, if even that.
In the rear, maximum offset for inner clearance of a 12" wheel looks like about +26. According to the calculator, the 315 tire on a 12" wheel will extend 17mm farther than the one in the below pic (315 on 18x10.5 +43). There is some space leftover there, and the rest could be handled by rolling flat and a slight pull. 2 degrees of camber will help too.
I know the safe bet would be a 10/11" stagger, but I don't think I will be satisfied unless I know the envelope has been thoroughly pushed to the limits. I'd probably end up spending money down the road on a wider setup. I've looked all over, and the only Zs I've seen with 11-12+ widths are the hardparking hellaflushers with 90 degrees camber and 225 tires.
#2934
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Looks like you've done your homework and this is what you want so I say go for it. It is gonna be a tight fit. I will be running the same setup eventually on my 10 and 11 inch staggered setup. good luck, post pics!
#2935
350Z-holic
iTrader: (46)
Thanks SoCal07HR for the pics and measurements. That is extremely helpful.
I think the magic number for inner clearance on an 11" wheel up front is +16. The wheel would extend outward 1" more than the 18x10 +28(with spacers) RPF1 that has been used with a 305/30 tire. However, the 295/30 tire would be shorter and bulge much less on the 11" rim. Another calculator I used shows the 295 tire on an 11" rim extends 7mm more than the 305 on 10". I think that could be made to fit with only a slight fender pull, if even that.
In the rear, maximum offset for inner clearance of a 12" wheel looks like about +26. According to the calculator, the 315 tire on a 12" wheel will extend 17mm farther than the one in the below pic (315 on 18x10.5 +43). There is some space leftover there, and the rest could be handled by rolling flat and a slight pull. 2 degrees of camber will help too.
I know the safe bet would be a 10/11" stagger, but I don't think I will be satisfied unless I know the envelope has been thoroughly pushed to the limits. I'd probably end up spending money down the road on a wider setup. I've looked all over, and the only Zs I've seen with 11-12+ widths are the hardparking hellaflushers with 90 degrees camber and 225 tires.
I think the magic number for inner clearance on an 11" wheel up front is +16. The wheel would extend outward 1" more than the 18x10 +28(with spacers) RPF1 that has been used with a 305/30 tire. However, the 295/30 tire would be shorter and bulge much less on the 11" rim. Another calculator I used shows the 295 tire on an 11" rim extends 7mm more than the 305 on 10". I think that could be made to fit with only a slight fender pull, if even that.
In the rear, maximum offset for inner clearance of a 12" wheel looks like about +26. According to the calculator, the 315 tire on a 12" wheel will extend 17mm farther than the one in the below pic (315 on 18x10.5 +43). There is some space leftover there, and the rest could be handled by rolling flat and a slight pull. 2 degrees of camber will help too.
I know the safe bet would be a 10/11" stagger, but I don't think I will be satisfied unless I know the envelope has been thoroughly pushed to the limits. I'd probably end up spending money down the road on a wider setup. I've looked all over, and the only Zs I've seen with 11-12+ widths are the hardparking hellaflushers with 90 degrees camber and 225 tires.
Useless info without offsets! ! !
#2937
350Z-holic
iTrader: (46)
I am concerned about how you've made the rears fit, as I've had many sets of 10.5" wheels in various offsets rub with a smaller tire - even with rolled fenders and camber. Any pics of how it sits now?
#2938
New Member
iTrader: (44)
I don't have any issue with the sizing in the front - even without the wider front fenders. I imagine you may even want to space the fronts out a bit with that front fender.
I am concerned about how you've made the rears fit, as I've had many sets of 10.5" wheels in various offsets rub with a smaller tire - even with rolled fenders and camber. Any pics of how it sits now?
I am concerned about how you've made the rears fit, as I've had many sets of 10.5" wheels in various offsets rub with a smaller tire - even with rolled fenders and camber. Any pics of how it sits now?