Wheel Directory: Forgestar F14 18x9.5 +38 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

empower-auto · 05-21-2013, 06:12 PM

I'm a little frustrated .. maybe with myself. I pulled the trigger on 18x9.5 Forgestar F14's with a +38 offset.

I am running a 235/40/18 tire all around. For suspension I have HSD HR coil-overs and my height up front is pretty "flush" no gap. 1-finger gap from sidewall to fender lip. I have -1.3 camber up front.

Now .. on the street it's perfect. However on a track it's useless. The rubbing is brutal under any serious cornering. I really don't understand how anyone can say this sizing "fits" with no issues. I've seen some people reporting track use with the same sizing .. or even a 255/35 which makes no sense to me.

I went out to an auto-x course and the front was absolutely horrible.

Silly me for not doing some better measuring but .. what gives?

yoshiharadesign · 05-21-2013, 06:16 PM

Where exactly is it rubbing?

empower-auto · 05-21-2013, 06:24 PM

Quote:

Originally Posted by yoshiharadesign

Where exactly is it rubbing?

There's a black mark on the inner fender (non painted part, just inside the fender lip) about 3 inches long.

empower-auto · 05-21-2013, 06:32 PM

took the paint right off of the fender lip on the drivers side

jshadeck · 05-21-2013, 06:40 PM

Who told u it would fit no issue when dropped on coilovers? I have this setup at stock suspension, and i know i cant drop my car w out excessive camber, which i personally wont do. Maybe they meant it was ok at stock or maybe a small drop?

norsamerican · 05-21-2013, 06:41 PM

what is your spring rates on your coils?
Sounds like you are too low.
18x9.5 really isn't an ideal wheel size for the fronts for competition on a stock car.

GTB/ZR-1 · 05-21-2013, 06:58 PM

Quote:

Originally Posted by empower-auto

I have -1.3 camber up front.

You'll need to double that camber setting. My car has coilovers 17x9s +35 w/ 245s w/ -2.5 & no issues.

empower-auto · 05-21-2013, 07:08 PM

Quote:

Originally Posted by GTB/ZR-1

You'll need to double that camber setting. My car has coilovers 17x9s +35 w/ 245s w/ -2.5 & no issues.

Lesson learned. I am going to go up 0.5 inches and get my camber dialed in once my bolts show up.

86_ZN6 · 05-21-2013, 07:17 PM

Buy a second set of wheels for the track. 17s ftw!

18x9.5 up front is all for show but no go on stock body!

Metabrz · 05-22-2013, 01:24 AM

I run the same set up wheel set up with 245/35 rubber with -2.0 degrees front camber. Car gets tracked and B road blasted regularly.

I've had no rubbing on track and only with a really BIG g out (its happened twice in 6 months) do I get rubbing in the rear.

MOAR camber on the front

FR-S Matt · 05-22-2013, 06:52 AM

With coilovers on 18X9.5, I think a 1 inch drop or so is sufficient. I don't see a heavy drop benefiting unless you really mess with the camber adjustment. The stock spring is already a fingernail away on a +38 18X9.5 with a 245/35 tire. If I can get a little more spring clearance, there'd be no problem with hard cornering or rubbing.

Jlturner · 05-22-2013, 10:52 AM

I seen you on the track Sunday in Edmonton, I was going to come over and introduce myself but by the time I got down there you had left. I was also planning to run 18x9.5 wheels all around with 235/40 rubber. I won't be tracking my car often but I don't want any rubbing issues either. I'm wondering now if I should change my plans for wheels. I am lowered on Eibach Sportlines so I'm probably not quite as low as you so maybe I will get away without rubbing.

King Tut · 05-22-2013, 11:09 AM

More front camber is the answer here. I will be getting my setup fine tuned over the next week, and I will definitely report back what I have to do to ensure I get no rubbing on my 18x9.5 +40 265/35/18 setup.

jeebus · 05-22-2013, 11:43 AM

Let's not forget that you are also running a taller than stock diameter tire too..by .8"

05-21-2013, 06:12 PM	#1
empower-auto Kouki-Monster Join Date: May 2012 Drives: 2013 Scion FR-S Location: Saskatoon, SK Posts: 1,137 Thanks: 11 Thanked 562 Times in 261 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	Wheel Directory: Forgestar F14 18x9.5 +38 I'm a little frustrated .. maybe with myself. I pulled the trigger on 18x9.5 Forgestar F14's with a +38 offset. I am running a 235/40/18 tire all around. For suspension I have HSD HR coil-overs and my height up front is pretty "flush" no gap. 1-finger gap from sidewall to fender lip. I have -1.3 camber up front. Now .. on the street it's perfect. However on a track it's useless. The rubbing is brutal under any serious cornering. I really don't understand how anyone can say this sizing "fits" with no issues. I've seen some people reporting track use with the same sizing .. or even a 255/35 which makes no sense to me. I went out to an auto-x course and the front was absolutely horrible. Silly me for not doing some better measuring but .. what gives? __________________ Rich Anderson EMPOWER AUTO Last edited by DarrenDriven; 03-17-2014 at 01:18 PM.

05-21-2013, 06:32 PM	#4
empower-auto Kouki-Monster Join Date: May 2012 Drives: 2013 Scion FR-S Location: Saskatoon, SK Posts: 1,137 Thanks: 11 Thanked 562 Times in 261 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	took the paint right off of the fender lip on the drivers side __________________ Rich Anderson EMPOWER AUTO

05-21-2013, 06:40 PM	#5
jshadeck Senior Member Join Date: Nov 2012 Drives: 2013 Scion FR-S Whiteout 6MT Location: carlisle, pa Posts: 773 Thanks: 3 Thanked 221 Times in 163 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Who told u it would fit no issue when dropped on coilovers? I have this setup at stock suspension, and i know i cant drop my car w out excessive camber, which i personally wont do. Maybe they meant it was ok at stock or maybe a small drop? __________________

05-21-2013, 06:41 PM	#6
norsamerican Senior Member Join Date: Jan 2013 Drives: WRB BRZ Location: Houston Posts: 539 Thanks: 101 Thanked 233 Times in 112 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	what is your spring rates on your coils? Sounds like you are too low. 18x9.5 really isn't an ideal wheel size for the fronts for competition on a stock car. __________________ Avant-Garde Wheels

05-22-2013, 11:09 AM	#13
King Tut NASA SpecE30 Racer Join Date: May 2012 Drives: 2006 Honda S2000 Location: Gulf Breeze, FL Posts: 7,279 Thanks: 607 Thanked 5,759 Times in 3,055 Posts Mentioned: 274 Post(s) Tagged: 10 Thread(s)	More front camber is the answer here. I will be getting my setup fine tuned over the next week, and I will definitely report back what I have to do to ensure I get no rubbing on my 18x9.5 +40 265/35/18 setup. __________________ - King Tut Street/Track Car: 2006 Honda S2000 TT3 \|\| Race Car: 1987 BMW 325is SpecE30 \|\| Tow Vehicle: 2014 RAM 1500 EcoDiesel Sold Cars: 2012 BMW M3 \|\| 2013 Subaru BRZ \|\| 2012 Porsche Cayman R \|\| 2009 Chevrolet Z06 \|\| 2009 BMW M3 \|\| 2004 BMW M3 \|\| 2004 Nissan 350Z

05-21-2013, 06:16 PM	#2
yoshiharadesign Banned Join Date: Jun 2012 Drives: BRZ Location: california Posts: 297 Thanks: 172 Thanked 159 Times in 88 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Where exactly is it rubbing?

05-21-2013, 07:17 PM	#9
86_ZN6 Senior Member Join Date: Apr 2012 Drives: 86 ZN6 Location: SF Bay Area, NorCal Posts: 4,682 Thanks: 1,317 Thanked 2,072 Times in 1,222 Posts Mentioned: 126 Post(s) Tagged: 1 Thread(s)	Buy a second set of wheels for the track. 17s ftw! 18x9.5 up front is all for show but no go on stock body!

05-22-2013, 11:43 AM	#14
jeebus Senior Member Join Date: Jul 2012 Drives: 2015 Mustang GT (on order) Location: San Diego Posts: 904 Thanks: 114 Thanked 471 Times in 208 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Let's not forget that you are also running a taller than stock diameter tire too..by .8" __________________

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