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Old 03-27-2013, 05:14 PM   #1776
Skooterk
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Originally Posted by TarmacDaddy View Post

Thanks that is actually my latest concern. I have leaned towards the PSS as of last night, but the tread width is very wide compared to others...probably fits more like a 275.
Have been thinking about this exact same setup - PSS 265/35 or 255/35 on 18x9.5 e45 raijins - let us know how it works for you.
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Old 03-27-2013, 05:56 PM   #1777
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Originally Posted by Skooterk View Post
Have been thinking about this exact same setup - PSS 265/35 or 255/35 on 18x9.5 e45 raijins - let us know how it works for you.
ideally you'll want a lower offset for a 9.5" wheel. 18x9.5 +45 has 3mm LESS clearance than stock sti, and they already have trouble fitting wider tires on their stock wheels. You're wanting to go 3mm inboard with the wheel, and run an extra 20mm of tire. ~38-40 would be perfect.
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Old 03-27-2013, 08:29 PM   #1778
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Originally Posted by sc00by4life View Post

ideally you'll want a lower offset for a 9.5" wheel. 18x9.5 +45 has 3mm LESS clearance than stock sti, and they already have trouble fitting wider tires on their stock wheels. You're wanting to go 3mm inboard with the wheel, and run an extra 20mm of tire. ~38-40 would be perfect.
I came across someone running 245/40s on 18x9 +63 TSW Nurburgrings on a 2011 STI with no rubbing on iwsti, if it is a true 245 that would push 15mm ( 5mm towards strut from tire, 10 mm towards strut from wheel) towards the strut from the stock WRX wheel/tire setup. A 265/35R18 PSS on a 18x9.5 +45 fits almost like a 275 so that would push 12mm towards the strut from stock WRX setup( 8mm away from strut from wheel, but 20mm towards strut from tire). Am I thinking about this wrong?
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Old 03-27-2013, 09:02 PM   #1779
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Originally Posted by Skooterk View Post
I came across someone running 245/40s on 18x9 +63 TSW Nurburgrings on a 2011 STI with no rubbing on iwsti, if it is a true 245 that would push 15mm ( 5mm towards strut from tire, 10 mm towards strut from wheel) towards the strut from the stock WRX wheel/tire setup. A 265/35R18 PSS on a 18x9.5 +45 fits almost like a 275 so that would push 12mm towards the strut from stock WRX setup( 8mm away from strut from wheel, but 20mm towards strut from tire). Am I thinking about this wrong?
He either got the offset wrong, or had to ghetto fab the wheels to fit. Look at that guys setup. Hes running ZERO to POSITIVE camber all around. That is flat out DANGEROUS.

a 9" +63 will NOT properly clear even stock suspension. That is half an inch LESS clearance than stock sti wheels!

I'm using stock sti wheels as a reference point as they already have trouble running proper camber + wide tires on stock suspension.

This is an 18x8.5 +52 with a 275/35:


As you can see, a 18x9.5 +45 with 275 is going to be DAMN close, and flat out wont fit if you are running more than 1* of camber. Coilovers and camber plates will help you fit this, as camber plates will physically move the strut vs angling the hub like bolts will.
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Old 03-28-2013, 12:37 AM   #1780
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Originally Posted by J_Maher_WRX View Post
If your concerned about ride quality why would you be looking at an Extreme Performance tire like the Dunlops? They are more so geared towards track use then as a daily commuter. And yes our tires are shorter than the STi's, though the STi has much shorter gearing and actually benefits from a larger tire. The speedo is off by less than 1mph if you run the 255/35... Not really gonna make any huge difference in mileage haha
Yeah I changed my tune and decided to get out of that category of tires. I forgot how loud those tires can be. I have decided on the Michelin Pilot Super Sport...placed my order a few hours ago.
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Old 03-28-2013, 12:47 AM   #1781
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Originally Posted by Skooterk View Post
Have been thinking about this exact same setup - PSS 265/35 or 255/35 on 18x9.5 e45 raijins - let us know how it works for you.
I sure will....these wheels look very clean/factory to me. I went with the Hyper Silver. I can't do flat black wheels again, the paint fades too easily.

Tires:
I was originally set on 265/35, but I changed my mind today and went with a 245/40 Michelin Pilot Super Sport. These are more meaty than other 245/40's I believe.

Front clearance:
Inside strut clearance (as mentioned today by another) and rear fender clearance are two of the main reasons I decided against a 265/35. I know the front will clear, but with a "meaty brand" 265 it might not. I'm also concerned about how the car will "feel" driving straight (once lowered) with a 265.

Rear clearance:
I know my car will get lowered some day and when that time comes I don't want to roll the rear fenders.

BTW, this thread is great. Lots of good advice in here.

Last edited by TarmacDaddy; 03-28-2013 at 01:25 AM.
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Old 03-28-2013, 07:55 PM   #1782
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Default optimal

so what IS the optimal wheel and tire size combo that sits on the best steering axis point?
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Old 03-31-2013, 12:22 AM   #1783
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Wheels questions. I am currently on 18x7.5" et.38 on 245/40's. Lowered on H&R springs. No rubbing issues at all. Today I got 18x9.5" et.38...if I keep the same STI tires (245/40's) will I need to roll fenders? Or should I be fine? Thanks fellas. I'd like to know ahead that way I can have the fenders rolled before I get wheels mounted.
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Old 03-31-2013, 11:51 AM   #1784
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Originally Posted by SoobieDoobieDoooo View Post
Wheels questions. I am currently on 18x7.5" et.38 on 245/40's. Lowered on H&R springs. No rubbing issues at all. Today I got 18x9.5" et.38...if I keep the same STI tires (245/40's) will I need to roll fenders? Or should I be fine? Thanks fellas. I'd like to know ahead that way I can have the fenders rolled before I get wheels mounted.
With a 245 you might. It will be close.
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Old 03-31-2013, 11:51 AM   #1785
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so what IS the optimal wheel and tire size combo that sits on the best steering axis point?
Factory.
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Old 04-01-2013, 03:39 PM   #1786
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Originally Posted by devil13 View Post
Wheels: Work Emotion XD-9 18x9 +38

Tires: Pirelli P Zero Nero 245/40/18

Suspension: RCE Blacks and GTWORX/Bilstein Kit

Fenders: Stock

Camber: Stock

Rubbing: ZERO

I just calculated my wheel/tire width/offset and compared to yours and my wheels stick out exactly the same amount. My 245/40 tires might be a little more beefy, so I'm not sure how close yours is to rubbing in the rear?
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Old 04-01-2013, 04:05 PM   #1787
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I purchased some 18x9.5 +38 Work CR Ultimate's with 265/35R18s on stock suspension. I will be rolling my rears and I know these wheels will fit but I was curious if anyone knew what kind of camber specs I would need. Will I be able to work out that camber on stock parts or will I need to buy some camber plates/camber bolts?

Last edited by JFIV; 04-01-2013 at 04:17 PM.
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Old 04-01-2013, 07:13 PM   #1788
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Hey all, I need help figuring out what I can expect from running rota SVN-Rs 18x10 +30 offset on a 235/35 tire? I'm sure I will have to roll all the fenders but anything else? Will these fit on a 2011 wrx and is that a safe tire to put on that rim? Any answers are appreciated just waiting to buy.
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Old 04-01-2013, 07:18 PM   #1789
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Originally Posted by ryblair View Post
Hey all, I need help figuring out what I can expect from running rota SVN-Rs 18x10 +30 offset on a 235/35 tire? I'm sure I will have to roll all the fenders but anything else? Will these fit on a 2011 wrx and is that a safe tire to put on that rim? Any answers are appreciated just waiting to buy.
Well your suby will look awsome but drive like ****.
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Old 04-01-2013, 10:59 PM   #1790
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so after browsing this thread a little it seems i should be able to run 245/40/18's on an 18x9.5" +38mm offset wheel without much trouble. I have RCE yellows and koni inserts in 08 struts up front.

i really want to put these on my '12 OBP hatch, the 8.5" width would be a little easier fit i think but they only come in silver and black
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Old 04-02-2013, 02:20 AM   #1791
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Originally Posted by Dmochowski View Post
so after browsing this thread a little it seems i should be able to run 245/40/18's on an 18x9.5" +38mm offset wheel without much trouble. I have RCE yellows and koni inserts in 08 struts up front.

i really want to put these on my '12 OBP hatch, the 8.5" width would be a little easier fit i think but they only come in silver and black
You will need a roll in the rear for sure.
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Old 04-02-2013, 02:36 AM   #1792
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Originally Posted by trev762 View Post

Well your suby will look awsome but drive like ****.
Sucks look like I won't be running that wide since I need good function. Might have to do 9.5 +38 or even 9 only . I wish svns came in those sizes I love that wheel
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Old 04-02-2013, 03:38 AM   #1793
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Sucks look like I won't be running that wide since I need good function. Might have to do 9.5 +38 or even 9 only . I wish svns came in those sizes I love that wheel
If you want real daily function, you have absolutely no need for a wheel wider than 8".
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Old 04-02-2013, 11:39 AM   #1794
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Originally Posted by sc00by4life View Post

If you want real daily function, you have absolutely no need for a wheel wider than 8".
Your saying unless I go stock 8 it won't ever drive the same with lets say 9inch? And I meant the tire would be 235/40 not 235/35 typo

Last edited by ryblair; 04-02-2013 at 11:49 AM.
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Old 04-02-2013, 12:16 PM   #1795
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Your saying unless I go stock 8 it won't ever drive the same with lets say 9inch? And I meant the tire would be 235/40 not 235/35 typo
will it drive exactly the same? no.

but again - you said you want function more than anything. If thats the case, there is absolutely no need for a wheel wider than 8" in 99% of scenarios (which is daily driven cars).
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Old 04-02-2013, 12:26 PM   #1796
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There are also plenty of guys on here running wider wheels with the right offset and tires size that will tell you it is the same or better than stock especially gaining some grip from the wider wheel
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Old 04-02-2013, 01:49 PM   #1797
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Yeah I think I am gonna go with an 8.5" wheel 44mm offset. Feel thats good middle ground on the wheel a little wider than stock buy not too much so. Will easily fit 245/40/18's and fill out the fender more hopefully won't have to roll anything.
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Old 04-02-2013, 02:18 PM   #1798
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Originally Posted by 2011rex18 View Post
There are also plenty of guys on here running wider wheels with the right offset and tires size that will tell you it is the same or better than stock especially gaining some grip from the wider wheel
Grip? What, so you can drive like a madman and terrorize people on the street?
As said, 99% of the time you don't need more than the stock wheel/tire combo for a DD. What comes stock is often a good balance of weight, performance and cost for a stock street car.
Sure, lots of people run oversized stuff and 99% of the time it hurts, but looks way cool.
Obviously, if everyone were sensible there wouldn't be much of an auto parts aftermarket and people wouldn't race.
But, the original question was would 235's on a 10" rim be safe. The answer is it's not safe on a 10" rim and not sensible on more than a 9" rim. You would be stretching the tire on anything over an 8.5" rim so it won't perform as well as it would on an 8-8.5" rim.
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Old 04-02-2013, 02:50 PM   #1799
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It's not about driving like a madman. It was stated that you will lose function if moving up from the 8" and my only comment is that with the correct setup grip will be gained which is more of an advantage than disadvantage in any case sorry if it didn't come off that way! Rolleyes!!
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Old 04-02-2013, 02:53 PM   #1800
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It's not about driving like a madman. It was stated that you will lose function if moving up from the 8" and my only comment is that with the correct setup grip will be gained which is more of an advantage than disadvantage in any case sorry if it didn't come off that way! Rolleyes!!
Noone said you lose function. But you aren't GAINING anything on a daily driven vehicle.

You might gain grip, but you could also pinch a tire on a narrow wheel and get just as much (if not more) lateral grip. You also gain rotating mass, heavier wheels, heavier tires, increased tramlining, increased steering radius, etc.

Last edited by sc00by4life; 04-02-2013 at 03:12 PM.
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