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I noticed a few people are running 235/55/17's on the 2010+ OB. I know the clearance to the spring/strut in the front is pretty slim with the 225 from the factory already, so not sure about the extra .2 (I think) width. I have read a million threads about this too, just want to get some straight feedback. Also, any issue going non stock warranty wise or something I am missing?

THANKS!
 

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235/55/17 is listed as ok to use per subaru according to the guy at discount tire. I tried to get them to mount a 225/55 and they would not. He listed out for me all approved sizes for an outback - you should not have warranty issues.
 

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Should fit, may hit at full lock though. Seems snug in there.
 

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Discussion Starter #4
Interesting that it was "approved" for use, but goo to know. I saw your thread and the issues with mounting the 225/55...I think I will see what the shop says about if they mount one and it doesn't really fit, maybe they will let me check it out. I am guessing it must be ok for the 225/55 even though since the legacy comes with 225/50 and has the same gearing specs listed.

225/60R17
225/55R17
235/55R17

225/60R17 - Section Width: 8.85 in
225/55R17 - Section Width: 8.85 in
235/55R17 - Section Width: 9.25 in

225/60R17 - Overall Diameter: 27.62 in
225/55R17 - Overall Diameter: 26.74 in
235/55R17 - Overall Diameter: 27.17 in

225/60R17 - Sidewall Height: 5.31 in
225/55R17 - Sidewall Height: 4.87 in
235/55R17 - Sidewall Height: 5.08 in

225/60R17 - Circumference: 86.77 in
225/55R17 - Circumference: 84.00 in
235/55R17 - Circumference: 85.35 in

225/60R17 - Actual Speed: 60 mph
225/55R17 - Speedometer1: 61.9 mph
235/55R17 - Speedometer1: 60.9 mph

225/55R17 - Speedometer Difference: 3.293% too fast
235/55R17 - Speedometer Difference: 1.660% too fast
 

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even if you go to the bigger size tire that is approved by Subaru, will there be any negative effects such as change in accuracy in the speedo, change in mpg, road noise, ride quality, etc.?
 

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the only reason i would not recommend this is because of the wheels. they WILL fit, but not the right size for that wheel. i have 235/55/17 tires on 17x8" wheels. i wanted a wider contact patch and a stiffer and shorter sidewall. i love my tires, however they are .9" wider than the stock tires. stick with 225. these 235s are essentially 245s. also im curious who uses that size besides me, and if they do im willing to bet its not on the stock wheels.
 

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the only reason i would not recommend this is because of the
wheels. they WILL fit, but not the right size for that wheel.
Oh? Exactly what do you mean "not the right size?"

Suggest you check the tire maker's specs before dispensing advice.

For example, Michelin specifies rim widths of 6.5" to 8.5" for their
235/55ZR17 Pilot Sport A/S Plus -- and that's quite typical for many
other tires of that size.

...when all else fails, R.T.F.M.

Looby
 

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well i could've explained it a bit better but thats a little too wide of a tire. i even asked the exact same question and found that a 225 is the best bet for a 7" wide rim.
 

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well i could've explained it a bit better but thats a little too wide of a tire.
Sez who? Someone better qualified than Michelin?

 

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well i am gullible, just passing along info from the internet. it seems like every wheel/tire fitment guide i find on car forums always wants you to stick with skinnier tires. was just trying to help, sorry i offended you
 

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I noticed a few people are running 235/55/17's on the 2010+ OB. I know the clearance to the spring/strut in the front is pretty slim with the 225 from the factory already, so not sure about the extra .2 (I think) width. I have read a million threads about this too, just want to get some straight feedback. Also, any issue going non stock warranty wise or something I am missing?

THANKS!
Why do you want to do this? Is there a tire that you want in this size?? Do you want high performance tires?
 

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I know that I wanted a 55 to lower the profile to remove some of the bouncing of a 60 sidewall and increase the cornering response. Going even lower to a 50 or 45 would be even better for handling but you would need to upgrade to an 18" rim to do it right.

If you go with a 235/55/17 you remain very close to the stock diameter. 225/55 lowers it quite a bit more which will help with acceleration but hurt the mileage.
 

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Discussion Starter #13
Why do you want to do this? Is there a tire that you want in this size?? Do you want high performance tires?
Exactly, HP or UHP All Season Tire is what I was looking for, they are readily available in the 235/55 size, slim pickings in the 225/60.
 

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Why do you want to do this? Is there a tire that you want in this size?? Do you want high performance tires?
Exactly, HP or UHP All Season Tire is what I was looking for, they are readily available in the 235/55 size, slim pickings in the 225/60.
My thoughts exactly. My whole reason for wanting to change sizes. Many more options, and that seems to be the size closet to factory.
 
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Maxboost08
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