Welcome to the North American Subaru Impreza Owners Club Thursday December 25, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Click here to visit TireRack
Tire & Wheel Forum sponsored by The Tire Rack

Losing traction? Need new tires?
Click here to visit the NASIOC Upgrade Garage...
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Tire & Wheel

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 02-16-2013, 10:12 PM   #1101
QwaktastiK
Scooby Specialist
 
Member#: 219100
Join Date: Aug 2009
Chapter/Region: Tri-State
Location: Philadelphia, PA
Vehicle:
'09 WRX Premium 5dr
COBB Stg3 336whp/370wtq

Default

Quote:
Originally Posted by Breezio View Post
I'm guessing here, but I imagine that clearance will be similar where the tread is, but slightly tighter towards the actual wheel...? So it shouldn't make much difference unless you compress the suspension enough to truck the wheel up in there... ?

That size wheel might be getting close to the struts too in your setup..?
Appreciate the response. Yeah, a test fit will definitely be in order.
* Registered users of the site do not see these ads.
QwaktastiK is offline   Reply With Quote
Old 02-17-2013, 02:32 AM   #1102
cianuro
Scooby Newbie
 
Member#: 235475
Join Date: Jan 2010
Chapter/Region: PRSIC
Location: Puerto Rico
Vehicle:
2008 WRX
Silver

Default

Quote:
Originally Posted by Zulu- View Post
This may be too aggressive for you guys.

Oh yeah, 7'' wide OE wheels, +25mm spacer [switching to ~30], 225/45, rolled & slightly pulled.
I had that idea at first, but didn't know what spacer size to choose, so ended up getting new wheels instead. Looks great with the stockers.
cianuro is offline   Reply With Quote
Old 02-18-2013, 03:10 PM   #1103
Zulu-
Scooby Specialist
 
Member#: 232213
Join Date: Dec 2009
Chapter/Region: South East
Location: Asheville, NC
Default

Quote:
Originally Posted by cianuro View Post
I had that idea at first, but didn't know what spacer size to choose, so ended up getting new wheels instead. Looks great with the stockers.
Thank you, thank you. I initially had 5mm on just 'cause, came across 25s at a steal and now want to jump up to 30-33 to finalize things.
Zulu- is offline   Reply With Quote
Old 02-19-2013, 09:38 PM   #1104
new_to_drift
Scooby Newbie
 
Member#: 316071
Join Date: Apr 2012
Chapter/Region: MWSOC
Location: Detroit, MI
Vehicle:
12 Impreza Sport

Default

im looking at picking up a set of enkei rpf01 17x8 +35 and wondering that with my BC BRs, would I need to roll/pull if I ran 245/40 tires?
i have an 09 WRX sedan
new_to_drift is offline   Reply With Quote
Old 02-20-2013, 12:08 AM   #1105
nhat
Scooby Guru
 
Member#: 140163
Join Date: Feb 2007
Chapter/Region: MAIC
Location: 3MI Racing
Vehicle:
03 STi
hellaflunctional

Default

Quote:
Originally Posted by new_to_drift View Post
im looking at picking up a set of enkei rpf01 17x8 +35 and wondering that with my BC BRs, would I need to roll/pull if I ran 245/40 tires?
i have an 09 WRX sedan
Did you even look through this thread to get an idea?
nhat is offline   Reply With Quote
Old 02-20-2013, 08:19 AM   #1106
new_to_drift
Scooby Newbie
 
Member#: 316071
Join Date: Apr 2012
Chapter/Region: MWSOC
Location: Detroit, MI
Vehicle:
12 Impreza Sport

Default

i did and it seems like i'd be fine. but didnt see anything about an 08+ sedean lowered with that tire size
new_to_drift is offline   Reply With Quote
Old 02-20-2013, 07:18 PM   #1107
new_to_drift
Scooby Newbie
 
Member#: 316071
Join Date: Apr 2012
Chapter/Region: MWSOC
Location: Detroit, MI
Vehicle:
12 Impreza Sport

Default

Quick to troll and tell me to search, but getting an answer is a lot harder. For anyone else in the future looking for this answer, I've found elsewhere that you can run 245/40 without pulling/rolling.
If anyone has real experience, please say so
new_to_drift is offline   Reply With Quote
Old 02-20-2013, 07:28 PM   #1108
Ride1226
Scooby Specialist
 
Member#: 201483
Join Date: Jan 2009
Chapter/Region: SCIC
Location: SoCal
Vehicle:
2010 WRX
WRBM

Default

I'm interested in a 245 on my 2010 sedan on coils as well. My final plan as of now sits at 18*9.5 with 245/35/18 federal 595 rs-r. My car won't be slammed but it should give me some solid rubber on the ground without having to modify fenders too much. Maybe just a roll.

Last edited by Ride1226; 02-20-2013 at 07:33 PM.
Ride1226 is offline   Reply With Quote
Old 02-20-2013, 07:36 PM   #1109
SWP n Gold
Scooby Guru
 
Member#: 110783
Join Date: Mar 2006
Chapter/Region: Tri-State
Location: Stamford, CT
Vehicle:
2010 WRX
Satin White Pearl

Default

Quote:
Originally Posted by new_to_drift View Post
Quick to troll and tell me to search, but getting an answer is a lot harder. For anyone else in the future looking for this answer, I've found elsewhere that you can run 245/40 without pulling/rolling.
If anyone has real experience, please say so
It's not about just tire size, you also have to take wheel size, offset, and ride height into consideration and some people get pretty in-depth with their alignment specs too.
SWP n Gold is offline   Reply With Quote
Old 02-20-2013, 07:47 PM   #1110
gsrcrxsi
Scooby Specialist
 
Member#: 236952
Join Date: Jan 2010
Chapter/Region: MAIC
Location: Baltimore
Vehicle:
2010 WRX (SSM)
Stg "2+" 300hp/360trq

Default

345s are pretty big. You'll have to do a lot of work. Probably won't even fit on the 9.5" wheel
gsrcrxsi is offline   Reply With Quote
Old 02-20-2013, 08:10 PM   #1111
John1john
Scooby Newbie
 
Member#: 347613
Join Date: Feb 2013
Chapter/Region: MWSOC
Location: Tulsa, OK
Vehicle:
2008 WRX BattleWagon
WRB

Default

Quote:
Originally Posted by SWP n Gold View Post
They are narrow, there is some stretch with that setup. Nothing ridiculous like a 225 on a 9.5" wheel, but it's stretched a little.

235/40/18 or 245/35/18 are perfect sizes for an 18x8.5" wheel on an 08+ WRX.
Oh man finally came across the answer i was looking for haha thanks SWP n Gold. So i have a 08 Wrx hatch and wanted to go with the 18x8.5 +44 Rota Grids and wanted to go with either 235/40/18 or 245/35/18. I love the real meaty look. This fitment will be ok for MY08? And if anything i can role my fenders...any help out there? SWP n Gold?
John1john is offline   Reply With Quote
Old 02-20-2013, 08:14 PM   #1112
QwaktastiK
Scooby Specialist
 
Member#: 219100
Join Date: Aug 2009
Chapter/Region: Tri-State
Location: Philadelphia, PA
Vehicle:
'09 WRX Premium 5dr
COBB Stg3 336whp/370wtq

Default

Quote:
Originally Posted by gsrcrxsi View Post
345s are pretty big. You'll have to do a lot of work. Probably won't even fit on the 9.5" wheel
That was a typo. They're trying to fit 245's.
QwaktastiK is offline   Reply With Quote
Old 02-20-2013, 09:04 PM   #1113
gsrcrxsi
Scooby Specialist
 
Member#: 236952
Join Date: Jan 2010
Chapter/Region: MAIC
Location: Baltimore
Vehicle:
2010 WRX (SSM)
Stg "2+" 300hp/360trq

Default

I know. I was being sarcastic lol
gsrcrxsi is offline   Reply With Quote
Old 02-20-2013, 10:16 PM   #1114
QwaktastiK
Scooby Specialist
 
Member#: 219100
Join Date: Aug 2009
Chapter/Region: Tri-State
Location: Philadelphia, PA
Vehicle:
'09 WRX Premium 5dr
COBB Stg3 336whp/370wtq

Default

Lol. Right over my head.
QwaktastiK is offline   Reply With Quote
Old 02-20-2013, 11:13 PM   #1115
Breezio
Scooby Specialist
 
Member#: 234357
Join Date: Jan 2010
Location: Meridian, ID
Vehicle:
2009 WRX
Sportwagen zum einbauen!

Default

Quote:
Originally Posted by John1john View Post
Oh man finally came across the answer i was looking for haha thanks SWP n Gold. So i have a 08 Wrx hatch and wanted to go with the 18x8.5 +44 Rota Grids and wanted to go with either 235/40/18 or 245/35/18. I love the real meaty look. This fitment will be ok for MY08? And if anything i can role my fenders...any help out there? SWP n Gold?
The 235's won't require any work.

I personally can't say for certain on the 245's... but I imagine they would fit with no mods.
If you want meaty, go with the 235/40, unless you want to squeeze in a 245/40 instead of a 245/35.
Breezio is offline   Reply With Quote
Old 02-21-2013, 12:16 AM   #1116
Ride1226
Scooby Specialist
 
Member#: 201483
Join Date: Jan 2009
Chapter/Region: SCIC
Location: SoCal
Vehicle:
2010 WRX
WRBM

Default

How about 245 rs-r? Maybe a roll?
Ride1226 is offline   Reply With Quote
Old 02-21-2013, 12:21 AM   #1117
John1john
Scooby Newbie
 
Member#: 347613
Join Date: Feb 2013
Chapter/Region: MWSOC
Location: Tulsa, OK
Vehicle:
2008 WRX BattleWagon
WRB

Default

Quote:
Originally Posted by Ride1226 View Post
How about 245 rs-r? Maybe a roll?
You know the meatier the tire the more happier i will be...well of course if it doesnt damage performance that much. I would actually love some 245 on their but do you really think they will fit the 08? I mean i thought about the 235 and thought they were going to be close? Has anyone ever tried this type of fitment yet?
John1john is offline   Reply With Quote
Old 02-21-2013, 12:29 AM   #1118
Ride1226
Scooby Specialist
 
Member#: 201483
Join Date: Jan 2009
Chapter/Region: SCIC
Location: SoCal
Vehicle:
2010 WRX
WRBM

Default

Quote:
Originally Posted by John1john View Post

You know the meatier the tire the more happier i will be...well of course if it doesnt damage performance that much. I would actually love some 245 on their but do you really think they will fit the 08? I mean i thought about the 235 and thought they were going to be close? Has anyone ever tried this type of fitment yet?
On the last page there is a pic of a white wrx wagon with 245. I have a sedan. I plan on just about the exact same setup. If its gonna fit. More rubber the happier I am as well.
Ride1226 is offline   Reply With Quote
Old 02-21-2013, 04:12 AM   #1119
sc00by4life
Scooby Guru
 
Member#: 97135
Join Date: Sep 2005
Chapter/Region: NWIC
Location: Bothell
Default

a 245 federal is not like every other tire.
sc00by4life is offline   Reply With Quote
Old 02-21-2013, 10:01 AM   #1120
SWP n Gold
Scooby Guru
 
Member#: 110783
Join Date: Mar 2006
Chapter/Region: Tri-State
Location: Stamford, CT
Vehicle:
2010 WRX
Satin White Pearl

Default

Quote:
Originally Posted by John1john View Post
Oh man finally came across the answer i was looking for haha thanks SWP n Gold. So i have a 08 Wrx hatch and wanted to go with the 18x8.5 +44 Rota Grids and wanted to go with either 235/40/18 or 245/35/18. I love the real meaty look. This fitment will be ok for MY08? And if anything i can role my fenders...any help out there? SWP n Gold?
Quote:
Originally Posted by John1john View Post
You know the meatier the tire the more happier i will be...well of course if it doesnt damage performance that much. I would actually love some 245 on their but do you really think they will fit the 08? I mean i thought about the 235 and thought they were going to be close? Has anyone ever tried this type of fitment yet?
What type of suspension will you be running with the 18x8.5 +44 wheels? I have 235/40 Federals (run close to 245) mounted on my 18x8.5 +44 Grids waiting to go on in another month. I'm lowered on Epic springs/Koni shocks which makes the drop about 1.5f/1.0r and I don't expect to rub since I had plenty of space with my previous 225/40s and I'm still on stock fenders (not rolled or pulled).

The 2008s have the same amount of fender clearance as the 2009-2010 WRXs so no worries there. I was originally going to go with 245/40/18s, but then I read that Federals run a little wider than normal so I just got those in 235/40/18. They fit the 18x8.5 wheels really well and I have a feeling they're going to look really good when I get them mounted on the car.

Quote:
Originally Posted by Ride1226 View Post
How about 245 rs-r? Maybe a roll?
A 245/40 Federal is going to run close to what a 255/40 "normal" tire runs in terms of width. If you want a 245/xx/18 Federal on our cars, I would opt for the 35 sidewall so it will run close to a 255/35/18 "normal" tire which is the same diameter as stock (225/45/17).
SWP n Gold is offline   Reply With Quote
Old 02-21-2013, 12:50 PM   #1121
Ride1226
Scooby Specialist
 
Member#: 201483
Join Date: Jan 2009
Chapter/Region: SCIC
Location: SoCal
Vehicle:
2010 WRX
WRBM

Default

That's my plan. 245/35/18. Just worried about the width being too much but it should be OK. Thinking of rota grid in 18*9.5 et38 or dpt possibly, same size.
Ride1226 is offline   Reply With Quote
Old 02-21-2013, 01:20 PM   #1122
QwaktastiK
Scooby Specialist
 
Member#: 219100
Join Date: Aug 2009
Chapter/Region: Tri-State
Location: Philadelphia, PA
Vehicle:
'09 WRX Premium 5dr
COBB Stg3 336whp/370wtq

Default information overload

Like SWP n Gold mentioned...There are a lot of factors in fitting wheels and tires.

For reference, the stock 2008 WRX wheel/tires are as follows:

Wheels: 17x7 +55 (5x100)
Typical Weight: ~21lbs
Tires: 205/50/17 Bridgestone Potenza RE92 High Performance All-Season Tire
Typical Weight: ~21lbs
Wheel + Tire Weight: ~42lbs

For reference, the stock 2009-2010 WRX wheel/tires are as follows:

Wheels: 17x7 +55 (5x100)
Typical Weight: ~21lbs
Tires: 225/45/17 Dunlop SP Sport 1 Summer Performance Tire
Typical Weight: ~22lbs
Wheel + Tire Weight: ~43lbs

Those factors include:
-height (adjustable w/ coilovers)
-dampening (adjustable w/ coilovers or Koni shocks/struts)
-wheel width (10" wheels are the largest I've seen on the 08-10 WRX)
-wheel offset (the lower the offset number, the closer it gets to your fenders and the further away it gets from your suspension. Ex. +18 will "poke" 20mm more than a +38, provide more suspension clearance but less fender clearance)
-tire width (265's is the largest I've seen on the 08-10 WRX)
-tire height (rolling diameter - all three numbers of a tire's spec are used in calculating the tire diameter. Ex. 245/40/18 has a rolling diameter of 653mm, which is 19mm taller than the stock 09/10 rolling diameter. These are the tallest tires I've seen on a 08-10 WRX) 40 is the sidewall height expressed as a percentage of the tread width. Ex. 235/40/18 has a sidewall height of 94mm (235mm x .40 = 94mm). 245/40/18 has a sidewall height of 98mm (245mm x .40 = 98mm)
-tire brand (certain brands and models of tires run larger than others, much like clothing. Ex. Star Specs and Federals run around 10mm larger than their competition. 265/35/18 Start Specs or Federals fit closer to 275's.)
-camber* (adjustable rear control arms or rear camber adjustment bushings kit, front camber plates)

*Camber specs typically should remain below -3.0 front and rear for daily driving when trying to optimize treadwear. To combat understeer, it is advisable to run equal to or greater negative camber front compared to rear. Ex. -2.0 front, -1.8 rear. Camber can and does affect the handling characteristics of your car. Your specs should be set for your driving goals. Alignment specs for track purposes are often NOT the same as alignment specs for daily driving. And depending upon your driving habits, i.e. highway commuting, camber can affect treadwear worse than city driving.

^Coilovers are adjustable. You can play with the height and dampening if you run into rubbing issues.
Also, coilovers are more narrow than the traditional spring/strut suspensions.

Here's a diagram to illustrate that fact:


Widest Tire:
For reference, the widest tire I've seen on an 08-10 WRX was Monkiboy's setup:
http://forums.nasioc.com/forums/show...postcount=5118
http://forums.nasioc.com/forums/show...postcount=5131

Wheels: 18x9.5 +35
Tires: Dunlop Direzza Star Spec 265/35/18
Suspension: AST 4100 Coilovers, Whiteline Rear Camber Adj. Bushings Kit
Camber specs: -2.1 to -3.0 front, -1.3 to -2.1 rear
Fender mods: rolled and pulled at all four corners

He's had 3 different wheels with those same tires. They were the specs I just mentioned as well as 18x9.5 +38 and 18x9.5 +44.

Tallest Tire:
For reference, the tallest tire I've seen on an 08-10 WRX is my setup:
http://forums.nasioc.com/forums/show....php?t=2419821

Wheels: Drag DR-31 18x9 +38 (+3mm spacer = +35)
Tires: 245/40/18 Sumitomo HTR ZIII
Suspension: GTWORX/Bilstein Impreza Cup Sport Kit, RCE Blacks, RCE Front Camber Plates, Whiteline Rear Camber Adj. Bushings Kit
Camber specs: -2.0f, -2.0r
Fender mods: rear fenders rolled, front fenders slightly pulled

Widest Tire w/o fender mods:
The widest tire I've seen run on an 08-10 WRX without fender modifications was 255/35/18. However, this was on a WRX running coilovers so the height and dampening were adjusted to accomplish this fitment without rubbing:
http://forums.nasioc.com/forums/show...&postcount=894

Wheels: Enkei RPF1 18x9.5 +38
Tires: 255/35/18 RE11 Potenza
Suspension: Tein Super Street Coilovers
Camber specs: unknown
Fender mods: none

Widest Wheel:
Don’t know if this guy is on Nasioc, but I found him on Instagram. Waiting to hear back from him to get more info on his setup.

Wheels: WORK Emotion XD9 18x10 +18
Tires: 235/35/18 BFGoodrich G-Force T/A KDW 2
Suspension: ISC Coilovers, Agency Power Rear Control Arms, Whiteline Rear Adj. Toe Link Kit
Camber specs: -2.5 front, -4.5 rear.
Fender mods: Rolled at all four corners. Rear fenders also pulled.

400+ WHP and tire grip:
And if you're worried about grip with higher horsepower, Binjoau's '09 puts down 510whp and he's running 235/40/18 Federal SS 595 without breaking loose:
http://forums.nasioc.com/forums/show....php?t=2087669


For those looking to see what fits, go here FIRST:
http://www.rimsntires.com/specs.jsp

Fender mods are very common. Some people are against doing it to their car, others don't mind. If the paint cracks during the process, it IS fixable. It's easier to touch up the paint IMO than it is to repair the fender if you rub because you opted not to modify your fenders. If you rub, you could be repairing the fender AND fixing the paint.

You can't have your cake and eat it too. If you plan on running super wide rubber and be flush with your fenders, you will likely need to modify your fenders to avoid rubbing.

Last edited by QwaktastiK; 03-17-2013 at 11:41 PM.
QwaktastiK is offline   Reply With Quote
Old 02-21-2013, 02:00 PM   #1123
SWP n Gold
Scooby Guru
 
Member#: 110783
Join Date: Mar 2006
Chapter/Region: Tri-State
Location: Stamford, CT
Vehicle:
2010 WRX
Satin White Pearl

Default

^ Great post with respect to fitment on the narrow body. Also good to know that the tires I'm about to put on won't break traction on a car with 510whp.
SWP n Gold is offline   Reply With Quote
Old 02-21-2013, 02:03 PM   #1124
Ride1226
Scooby Specialist
 
Member#: 201483
Join Date: Jan 2009
Chapter/Region: SCIC
Location: SoCal
Vehicle:
2010 WRX
WRBM

Default

Awesome post. Thank you.
Ride1226 is offline   Reply With Quote
Old 02-21-2013, 03:16 PM   #1125
sc00by4life
Scooby Guru
 
Member#: 97135
Join Date: Sep 2005
Chapter/Region: NWIC
Location: Bothell
Default

the blue car on XD9's, I would venture to say those are 18x10 +38's, not the +18's.
sc00by4life is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 01:23 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.