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Old 10-30-2001, 10:24 AM   #1
[ /dev/null ]
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Default 17" P1's + 225/45 S-03 + WRX Wagon + Rear Tire Rub???

I just got my new P1's and my rear tires are rubbing... anyone else have this issue?

Guess Im gunna have to roll those rear fenders...

peace
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Old 10-30-2001, 10:53 AM   #2
bgsntth
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Default so why does Tirerack recommend that size?

I thought this would be the case. Why does tirerack recommend this size for the wagon on their site? I actually thought it would rub on the strut, especially if you have the SPT's or coil overs. I think 215's are the limit for us wagon owners.
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Old 10-30-2001, 12:07 PM   #3
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Nope, depends on offset. I am lowered 1.8 inches or so and use 225/45R17. No rubbing. I am using TE37 17X7.5 +48mm offset.
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Old 10-30-2001, 12:13 PM   #4
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So, If one has a stock WRX wagon and goes w/a wheel (like a P1 or P7 for ex.) w/a 50mm-53mm offset and 225/45x17 tires .... are they going to experience rubbing like devnull posted??

Secondly, if one doesn't lower their wagon and goes w/a 48mm offset (like Speedline GT1's for ex.) and 225/45x17 tires will they experience rubbing?

I think it's important to get a clear recommendation on the correct tiresize for a non-lowered WRX w/various wheel offsets. Some folks don't choose to lower their car.

Stephen
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Old 10-30-2001, 12:48 PM   #5
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Well, I really don't know what to say. If you read the adjacent thread: http://i-club.com/forums/showthread....hreadid=107313

You'll read that 3 wagon owners responded, saying they have no tire rub with 225 tires on WRX wagon on stock suspension:

kpo - P7 (ET51), Kumhos
blue5spdwrxwagon - P1 (ET53)
T-wrecks - No info on wheels/tires.

So...

-Ray
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Old 10-30-2001, 01:21 PM   #6
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Please bear with me. What does it mean to roll the fenders? Will it change the appearance at all? Thanks.
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Old 10-30-2001, 01:26 PM   #7
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Why Subaru suggest 215/45/17 in the owner menu?!?!
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Old 10-30-2001, 02:16 PM   #8
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I'm still thinking about the wagon rubbing problem, and I realized I have some old photos to show. These are BBS RK 17x7 wheels that Subaru of New England are offering as port options. Offset is ET48, and the tires are Pirelli P7000SS 215/45R17. Since the offset of P1s are ET53, the outside edge of a 225/45R17 tire on P1 will be theoretically at the same position as these ones in the photo.

As you can see, if you put enough load on the wagon (chained down in this case), then the tire will rub the inner fender. So, I think if you usually have heavy loads in the back and corner hard (e.g. auto-x), then you may want to consider 215/45R17, despite what I have said earlier in this forum.

-Ray


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Old 10-30-2001, 02:35 PM   #9
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Upon thinking about this size thing some more, it seems that camber may be a big part of the picture. I remember reading and talking with some other WRX wagon owners that SOA set up the rear the camber so that the tires angle in at the tops a bit and the fronts the opposite. This (and the std 17mm rear swaybar) is one of the reasons it's so easy to get the back end loose. It seems to me that if the 225 size tires are rubbing then maybe a bit more camber than stock to bring the angle of the tops of the wheel in a bit more is in order for the rear. Any thoughts?

Stephen
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Old 10-30-2001, 02:43 PM   #10
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As god and rkkwan stated, there are a lot of factors to take into account.
*wheel offset
*strut diameter
*ride height
*camber
*tire deflection (esp. if doing autox or driving schools)

Enough to drive us all a little crazy. I would love to put on 225/45-17's with OZ superleggras, but am not confident that they would fit with my set-up (SPT, -1.1 camber). I would also like to use a 225/50-16 R-compound tire on my Speedline Comp2's (52mm), but am not confident that these will work either.

I think I'm going to run around on Dec. 14th at Laguna Seca with a torque wrench and "borrow" wheel/tire combos to check fit

Last edited by bgsntth; 10-30-2001 at 02:57 PM.
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Old 10-30-2001, 07:12 PM   #11
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yeah, im kinda supprised as well

225/45/17 Bridgestone Potenza S-03's
Prodrive P1 17x7 52MM

I wish I had a camera, but you can definately see that the tire and wheel well will come in conact when the suspension is compressed.

It look as though just the lip of the wheel well though. I'll roll it back and see if it helps

Oh yeah, forgot to mention... completely stock suspension,brakes etc

peace
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Old 04-25-2002, 11:42 PM   #12
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Are there any other wrx wagon owners w/ stock or SPT suspension running 225/45 17 S-03's? Any rubbing issues?

I was ready to purchase P1 17's w/ S-03's, but upon reading this post I am now unsure.

Right now I have stock suspension w/ stock alignment, but am planning to install the SPT suspension package in the future.

Thanks,
James
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Old 04-26-2002, 03:29 AM   #13
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Default jury is still out...

If you roll the fender lip, it won't rub there. Instead, it will rub higher above in the wheel well.

In my opinion, 225/45/17 tires on a Wagon WILL REQUIRE fender lip rolling to prevent contact with the fender lip if you push the car hard into corners. This is regardless of whether or not you lower your car with springs or coilovers. The reason is that at some point, the wheels will travel up depending on how hard you push it.

Contact with the lip is especially bad because the lip of the fender is sharp and will cut up your tires. The rear moulding will help some, but, sooner or later, that rear moulding will wear out and the clips inside the moulding will scrape the tires. Then you'll rip the rear moulding off and the fender lip is even sharper...

I think stiff sway bars will help because it will reduce body roll. Higher springs rates will help too...

In any case, as some have recommended, I think 215/45/17 tires are the best bet for anyone who doesn't want to worry about these issues.

John
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Old 04-26-2002, 04:40 AM   #14
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S0-3's are on the wide side especially at the tread, which may lead to more rubbing....
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Old 04-26-2002, 07:11 AM   #15
OldRacer
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I'm running ASA 17 x 7s (w/ 53mm offset) w/ PP S03s (225/45/17); stock struts/springs, Cusco 22-24 rear sway bar set to 24, Cusco 21 front sway bar. No problems whatsoever (incl auto-Xing).

Have Cobb (Koni) struts and STi pink springs on order. We'll see.

Len
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Old 04-26-2002, 08:39 AM   #16
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I would go with what Subaru themselves have done elsewhere in the world.

In case of the STi Sedan, they offered 225/45R17 tires on 17x7.5" wide wheels. BUT, in case of the STi Wagon (in the exact same market), they resolutely stuck with the 215/45R17 tires on 17x7" wheels. Why have they done that ?? These are the folks who have engineered our vehicles and instead of second guessing them, I believe we should stick to what they have done in their cars.

For the sedan, I might go for the 225/45R17 tires on 17x7.5 wheels but for the wagon, I would restrict myself to 215/45R17 tires on 17x7 wheels.

Just my 2c.

Later...AH
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Old 04-26-2002, 09:10 AM   #17
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No rubbing with a stock suspension on 225 R compounds, which not only are much wider than 225 street tires, but also provide a lot of grip and a lot of body roll.

But if you lower the car at all, get ready to roll the fenders like I did. It's not hard, but having to repaint it when the paint cracks off is worrisome... don't want rusty fenders in a few years.
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