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Old 12-02-2008, 04:45 PM   #1
javid
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Default 27" tall tires

I am thinking of putting some 27" tall tires on my close ratio STi for street and drag duty. Curious if any impreza owners have done this and run into problems with rubbing at full or close to full lock. I am confident I have plenty of space above and behind the wheel, worried about rubbing in front of the tire on the 'frame' rail.

If you've use 27" on an impreza please provide info on rubbing, ride height, tire size, wheel offset, and front / rear spring rates and bar thicknesses.
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Old 12-02-2008, 04:55 PM   #2
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That's 2" bigger! What suspension are you running? If stock, I'd make bets you'd rub on the spring perch.
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Old 12-02-2008, 08:17 PM   #3
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Originally Posted by mav1c View Post
That's 2" bigger! What suspension are you running? If stock, I'd make bets you'd rub on the spring perch.
12k coilovers... no perches, very little roll.
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Old 12-02-2008, 08:53 PM   #4
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why???
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Old 12-02-2008, 08:56 PM   #5
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Foresters can run +27", so I'd think a STI could just fine as long as you don't have the spring perches in the way. Depending on the width, there can be a little rubbing on the front plastic paneling when turning. Both I and my bro have run 27.5" (225/65/R16), 02 Forester, and 27.3" (235/50/R18), 04 Forester XT. These aren't sizes that will fit sedans, but the reason is the spring perch, not the well area. Since you don't have it, a 27" tire should be of little problem. The only other issue would be width, but you don't seem to want to get very wide so little problems there as well.
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Old 12-02-2008, 10:09 PM   #6
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Quote:
Originally Posted by Mr_Snips View Post
why???
The height will provide better gearing for drag and street.
The extra side wall will provide more flex during the launch (save axles I hope) and more cushion on the street (I have 12k springs front and rear, linear valved shocks, and all bushings upgraded).

The car was recently changed from toy to daily driver status. It'll go back to toy status soon and I will put the 275 RA-1s back on it
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Old 12-02-2008, 10:23 PM   #7
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Quote:
Originally Posted by Back Road Runner View Post
Foresters can run +27", so I'd think a STI could just fine as long as you don't have the spring perches in the way. Depending on the width, there can be a little rubbing on the front plastic paneling when turning. Both I and my bro have run 27.5" (225/65/R16), 02 Forester, and 27.3" (235/50/R18), 04 Forester XT. These aren't sizes that will fit sedans, but the reason is the spring perch, not the well area. Since you don't have it, a 27" tire should be of little problem. The only other issue would be width, but you don't seem to want to get very wide so little problems there as well.
This is helpful but I am still a little concerned about rubbing the inside front of the tire on the frame when at full lock. How much space is available at full lock on the impreza / forester is highly dependent on ride height...

Are you and your bro lowered?

Is there any way you could park the car with steering at full lock and investigate how close the tire is to the frame and how much lower your car could be dropped before the tire runs into the frame?

Or just mail me your wheels and tires?

Thanks
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Old 12-02-2008, 10:48 PM   #8
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2 INCHES

its gonna rub like a pig
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Old 12-03-2008, 09:53 AM   #9
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Quote:
Originally Posted by Uncle Scotty View Post
2 INCHES

its gonna rub like a pig
Well technically its only 1" closer
And I assume you mean "rub like a pig... on the frame at full lock?
What tire size, offset, and ride height were you using?
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Old 12-03-2008, 01:01 PM   #10
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Quote:
Originally Posted by javid View Post
Well technically its only 1" closer
And I assume you mean "rub like a pig... on the frame at full lock?
What tire size, offset, and ride height were you using?
235/40 on a 17x7.5

if i had 17x8 id run a 245/40

and if i had 17x8.5 id run a 255/40

to run a much taller tire, you will have to use some sort of coil over to clear the spring perches

also.....the weight of these things can get out of control and kill acceleration if you arent careful
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Old 12-03-2008, 03:48 PM   #11
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It's simply the width that will make or break the concept. Without perches, height stops becoming the problem.

So what width to use? Uncertain. Are you trying to stay as wide as possible with this? Or do you simply want the height and will contently run a 215-225 wide tire? 235-245 wide tire doable? Don't know.
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Old 12-03-2008, 03:55 PM   #12
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Quote:
Originally Posted by Uncle Scotty View Post
235/40 on a 17x7.5

if i had 17x8 id run a 245/40

and if i had 17x8.5 id run a 255/40

to run a much taller tire, you will have to use some sort of coil over to clear the spring perches

also.....the weight of these things can get out of control and kill acceleration if you arent careful
I have coilovers, I have aftermarket front fenders +1", I don't use front fender liners, and pulled and rolled the rears. I can easily fit 275s on 17x10s with the car SLAMMED, You may have seen my car and or posts in the Wide tire thread in motorsports.

26" tall tires would almost be a waste for me considering my objectives. These will be for softer street ride, better street gearing and quicker ETs at the drag. My car traps ~116 on pump spinning in first. Race gas has trapped 124 spinning 1st and part of 2nd. I almost always skip every other gear on the street when I am commuting.

I am shooting for 235/55 as they seem to be the most popular 27" tire (~6 "Max Performance Summer" tires are offered in this size). I have 17x8 stockers, 17x9s ET35 and two sets of 17x10s ET35.... so I could run most any size, if you know of one that is better.


It sounds like I will need to just pick them up and try them out. If they rub the inner metal fender I will cut and weld as I have been planning to do that for a while. If they hit the frame at "street" steering inputs levels then I FAIL and I will sell them to a Forester owner.

If they work then all the short ratio 6-speed owners that hit the drag strip will love me forever.
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Old 12-03-2008, 04:27 PM   #13
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If you've got the room, feel free to fit as wide as is available. Agreed that your harder part will actually be finding sticky brands/models in the desired size range.

My bro runs the Kuhmo SPT tires. They lack some in ultimate dry grip vs. some of the top performers, but they're a very civil, durable, affordable, tire. They're awesome in the wet too, maintaining pretty high levels of grip and staying "grabby." They can even take quite a beating from sport use without much fuss or wear. The only gripes versus a max performance summer tire is a mild drop in ultimate dry grip and the less them stiff sidewall, not horrible, but not as rock solid as some in terms of handling. Also, they come in some tall 27" sizes both in 235/55/ZR17 and 255/50ZR17 and are still as cheap as dirt in these sizes.
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Old 12-03-2008, 10:21 PM   #14
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Quote:
Originally Posted by javid View Post
I have coilovers, I have aftermarket front fenders +1", I don't use front fender liners, and pulled and rolled the rears. I can easily fit 275s on 17x10s with the car SLAMMED, You may have seen my car and or posts in the Wide tire thread in motorsports.

26" tall tires would almost be a waste for me considering my objectives. These will be for softer street ride, better street gearing and quicker ETs at the drag. My car traps ~116 on pump spinning in first. Race gas has trapped 124 spinning 1st and part of 2nd. I almost always skip every other gear on the street when I am commuting.

I am shooting for 235/55 as they seem to be the most popular 27" tire (~6 "Max Performance Summer" tires are offered in this size). I have 17x8 stockers, 17x9s ET35 and two sets of 17x10s ET35.... so I could run most any size, if you know of one that is better.


It sounds like I will need to just pick them up and try them out. If they rub the inner metal fender I will cut and weld as I have been planning to do that for a while. If they hit the frame at "street" steering inputs levels then I FAIL and I will sell them to a Forester owner.

If they work then all the short ratio 6-speed owners that hit the drag strip will love me forever.



w0w....just w0w

you can NOT have your cake and eat it too
drive your race car at the track and forget the street

sorry....but you wasting our time here and yours


and you shoulda put ALL that in your FIRST ****ing post to have not wasted our time, here
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Old 12-04-2008, 09:21 AM   #15
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Quote:
Originally Posted by Uncle Scotty View Post


w0w....just w0w

you can NOT have your cake and eat it too
drive your race car at the track and forget the street

sorry....but you wasting our time here and yours


and you shoulda put ALL that in your FIRST ****ing post to have not wasted our time, here

wOw just wOw, whats your problem?

My first post was perfectly clear, you wasted your own time responding.

"I am confident I have plenty of space above and behind the wheel, worried about rubbing in front of the tire on the 'frame' rail.

If you've use 27" on an impreza please provide info on rubbing, ride height, tire size, wheel offset, and front / rear spring rates and bar thicknesses."

I suppose since you deal with noobs all day you didn't believe that I had room above and behind and posted your knee jerk response of: No WAY!!!!!! It'll hit the perch!

Fact is that you've stuck with a mild setup. You've never even run wheels/tires/ride height aggressive enough to worry about the inner fender or frame rail, I have. Maybe you're out of your league on this one.

Thanks for your help
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Old 12-04-2008, 10:14 AM   #16
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Quote:
Originally Posted by javid View Post
If you've use 27" on an impreza please provide info on rubbing, ride height, tire size, wheel offset, and front / rear spring rates and bar thicknesses."
No one has because they're way to big for just about any "normal" application. As you stated above, you're going to have to just get them and let us know if they fit. You're the lab rat on this one.
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Old 12-04-2008, 12:01 PM   #17
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Agreed, lab rat.
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Old 12-04-2008, 12:55 PM   #18
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Agreed, lab rat.
I've done it before and will do it again. Hopefully I'll have some info by early next week.
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Old 12-04-2008, 07:56 PM   #19
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I ran 245/45/18 on my 04 sti with coilovers and had alot of rubbing in the front at full wheel lock but that was about it.
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Old 12-04-2008, 08:07 PM   #20
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Quote:
Originally Posted by javid View Post
wOw just wOw, whats your problem?

My first post was perfectly clear, you wasted your own time responding.

"I am confident I have plenty of space above and behind the wheel, worried about rubbing in front of the tire on the 'frame' rail.

If you've use 27" on an impreza please provide info on rubbing, ride height, tire size, wheel offset, and front / rear spring rates and bar thicknesses."

I suppose since you deal with noobs all day you didn't believe that I had room above and behind and posted your knee jerk response of: No WAY!!!!!! It'll hit the perch!

Fact is that you've stuck with a mild setup. You've never even run wheels/tires/ride height aggressive enough to worry about the inner fender or frame rail, I have. Maybe you're out of your league on this one.

Thanks for your help

'aggressive' is the new word for idiot around here

i see you trying to be REAL aggressive

my 'mild' setup is just fine....and wont win any shows or make me THINK im koo

i grew outa that when i got outa highscool...guess you must still be there

i dont need my car to stroke my **** like too many around here DO

Last edited by Uncle Scotty; 12-04-2008 at 09:15 PM.
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Old 12-05-2008, 08:30 AM   #21
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Quote:
Originally Posted by Uncle Scotty View Post


w0w....just w0w

you can NOT have your cake and eat it too
drive your race car at the track and forget the street

sorry....but you wasting our time here and yours


and you shoulda put ALL that in your FIRST ****ing post to have not wasted our time, here
You're a ****ing idiot sometimes. He said all of it, you just didn't read it. He said 3 times he had coilovers before you chimed in with your stunning advice that he needed them.

Javid is not a newblet idiot, he has his **** together and this is a legitimate question.

God forbid you would not know the answer, and therefore would refrain from comment in the first place.


And to think everyone thought you were going to come back a different guy...same old scotty!
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Old 12-05-2008, 11:48 AM   #22
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Quote:
Originally Posted by REX8 View Post
You're a ****ing idiot sometimes. He said all of it, you just didn't read it. He said 3 times he had coilovers before you chimed in with your stunning advice that he needed them.

Javid is not a newblet idiot, he has his **** together and this is a legitimate question.

God forbid you would not know the answer, and therefore would refrain from comment in the first place.


And to think everyone thought you were going to come back a different guy...same old scotty!

sorry....if i missed THAT

being stupid isnt gonna change....and it isnt ME being stupid trying to drive a race car on the street

idiots have been trying that for many years and it didnt work and isnt gonna work.

cant have your cake and eat it, too

27" tires on a slammed subaru



yeah****ingRIGHT

im smarter than THAT...always have been
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Old 12-05-2008, 01:37 PM   #23
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I played with tire diameters back in my Honda days, so I understand what you're trying to do. Basically changing the final drive through tires.

As for rubbing on the frame rail, you can get away with some mild rubbing if you've taken the time to ensure that there are no sharp bits in the way.

I'm curious how this will turn out for you.

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Old 12-05-2008, 01:39 PM   #24
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Quote:
Originally Posted by Uncle Scotty View Post
sorry....if i missed THAT

being stupid isnt gonna change....and it isnt ME being stupid trying to drive a race car on the street

idiots have been trying that for many years and it didnt work and isnt gonna work.

cant have your cake and eat it, too

27" tires on a slammed subaru



yeah****ingRIGHT

im smarter than THAT...always have been
Unless you actually have something informative to add, I think you're done here.

Thanks
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Old 04-27-2009, 08:48 AM   #25
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bump for results....im looking for a great street set up as well
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