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Old 01-19-2011, 09:52 PM   #1
paddleboy
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2001 Legacy L

Default Oops - put on wrong tire size!?!?

Hey folks,

Can't believe I did this but I just bought a new set of tires about 3 weeks ago (all 4 of course) for my 2001 Legacy S/W and I put on 205/60/R15 instead of 195/60/R15. I don't know if the shop made the error or I did but it was probably me because our other car uses 205s.

So, they are wider and larger. I know this means that the speedo will be off. I'm hearing a slight grind under turning conditions but can't find where it is rubbing. I can sometimes feel a slight vibration during the turns.

What should I do in your opinions?

Option 1: Live with it and keep driving unless the grinding gets worse?

Option 2: Put 'em for sale on Craigslist and replace again. Then I'm probably out at least $200, right...

Crap...
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Old 01-19-2011, 11:41 PM   #2
Frogsthatmoo
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I really wouldn't be too worried about the tires being the wrong size. The size difference is only 10mm or 4/10 of an inch. I say just keep them and live with it.

Realistically the speedo won't be noticeably off if any at all. Again, the 10mm wider will hardly change actual circumference.

What kind of grinding noise do you hear? You might not have noticed it before the new tires because you weren't concerned about anything being wrong, but now that you're concerned you're paying much closer attention to all the noises and what not. Have you checked your CV boots? They could cause a slight vibration when they start to go bad. I know I could feel it in my Legacy when the right one tore apart. (I knew it was ripped but I didn't replace it until it got bad).
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Old 01-20-2011, 11:16 AM   #3
Patrick Olsen
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I'm with froggy - that difference in tire size isn't worth worrying about. The 2.5GTs in the same body style use a tire (205/55-16) that's even a bit bigger than the 205/60-15, so it shouldn't matter at all.

Also concur with his thinking that the noise you're hearing is most likely not tire related.

Pat Olsen
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Old 01-20-2011, 11:54 AM   #4
that one legacy
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If it was the tires causing the transmission to go screwy, you'd hear noises whenever you drive, not just when you're turning. Noises when turning would usually indicate either a bad axle or a tie rod end. If you are hearing clunking noises when going over bumps, then add ball joints and strut top mounts to the list of things to check. There's more, but those are the most common in my experience. All of those parts would fail because of mileage by the way, not because of your tires. Of course, if your car is lowered, then that can complicate things.
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Old 01-20-2011, 01:13 PM   #5
PA-Outback2000
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ur only .48" taller than the stock size and will be really going 58.8mph when the speedo says 60mph, which is kind of like having overdrive on ur car.

try this... http://1010tires.com/TireSizeCalculator.asp
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Old 01-20-2011, 02:21 PM   #6
nighthawk06si
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it really depends how soft his suspension is. i know it doesn't relate to subaru's easily but my friend with a 07 speed3 went from 215(stock) to 225 and his rears rubs all the time with a 2nd or 3rd person in the car. His car is still on stock suspension and stock size rims but his rear's rub all the time
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Old 01-20-2011, 03:22 PM   #7
surfskater2003
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Default 225/50r16

The last set of tires i bought were 225/50R16's haha. My rear fenders were cutting into the tire itself so I had to roll the rear fenders. The fronts would also make a horrible noise when I cornered as well. for me, the width of the tires made them rub on the inside of the front fenders.
is that the sound your getting from your tires rubbing?
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Old 01-20-2011, 04:34 PM   #8
DLC
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I ran 225/45-18s on my 00 GT LTD.

I also ran 235 width on 7.5" Rota SDRs. 205 is narrow.

No fender rubbing in the rear and only very rare, full lock, over driveways rubbing on the front.

Get someone with an iPhone or Android, or GPS, to find out how much your speedo is off, and you'll be able to adjust in no time.
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Old 01-20-2011, 04:48 PM   #9
surfskater2003
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Default iphone?

haha, I dont think an Iphone would cut it. My Iphone once told me I was walking at 18 miles per hour...? haha but mine is a piece of crap.
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Old 01-20-2011, 10:26 PM   #10
paddleboy
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2001 Legacy L

Default Thanks folks - I think you're right that...

it may not be the tires rubbing. I pulled one wheel off and could not find any evidence or witness marks where it was rubbing. I checked the CV boots last night and they look good. Hmmm...I noticed the brake pads are about due for replacement. Maybe the left is more worn and I'm getting some rubbing. Will start there and then start considering bearings.

It is not a popping noise so I doubt ball joints - it definitely seems associated with speed so I'm suspecting brakes or tire rub.

-p
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Old 01-20-2011, 10:27 PM   #11
paddleboy
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Oh yeah, and I checked speed against my GPS - it is only 1 MPH off.
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Old 01-21-2011, 10:54 PM   #12
paddleboy
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Quote:
Originally Posted by surfskater2003 View Post
The last set of tires i bought were 225/50R16's haha. My rear fenders were cutting into the tire itself so I had to roll the rear fenders. The fronts would also make a horrible noise when I cornered as well. for me, the width of the tires made them rub on the inside of the front fenders. YouTube - passenger-cam is that the sound your getting from your tires rubbing?
No, not at all. I get a very low frequency, deep pulsing sound.
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Old 01-22-2011, 01:02 AM   #13
Frogsthatmoo
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^ Sounds like a wheel bearing.
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Old 01-22-2011, 07:59 AM   #14
Patrick Olsen
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I agree with him ^^^ again.
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Old 01-22-2011, 12:08 PM   #15
Jonathan
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It certainly COULD be a wheel bearing, although with the worn brake pads, it could also easily be a sticking brake caliper.
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