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Premium Member
2007 Forester XT 4EAT-VTD
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2,138 Posts
Discussion Starter #1
I'm toying with the idea of going with 18 X 8.5 et44 wheels with P245/45-18 tires. My Foz rides on Swift springs and it would appear to me - based on some initial measurements - that the tire would hit the fender in the rear on hard bumps. If anyone can share their experience on this it would be appreciated!
 

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Premium Member
2004 FSTI automatic
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2,643 Posts
One of my sets is 18x9 +44 with a 245x45 m&s tire..I have to run a 5mm spacer for the rim to clear the strut. I did have to get the rears rolled...

You might be ok if you choose 245x40...but rolling might be needed if you go with a taller tire.

My next set (18x9.5) will get wrapped with 245x40...


Ohh yeah, this is on swifts..
 

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Premium Member
2004 Forester XT MT
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1,433 Posts
I run 235's on a +48 17x8" wheel. The outside rear sidewall rubs the inside of the fender when I load the suspension on high G turns (on-ramps, etc.). Nothing drastic, but you can definitely see the line running around the sidewall. Never rubs when compressed if driving in a straight line. This was on the 2004 STi takeoffs and -1 degree of camber in the rear with zero toe.
 

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Premium Member
2007 XT Sport 5MT
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24,015 Posts
my 245/40-18 rubbed on hard corners/bumps with a full car and my mediocre camber settings.
the rim is an 18x8½ et48.

my rims won't clear stock struts without a 3mm spacer, so your wheel should be safe.
If you haven't already gotten some, install some camber bolts in the rear and roll the fenders.
 

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Premium Member
2008 FSXT 4EAT
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4,143 Posts
I'm running swifts with 245s and don't rub on the strut or fender.

Wheels: 18x8, et51

Tires: Dunlop SP Sport 600 (245/40/18)

Not exactly apples to apples, but good for reference. :)
 

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The Sub kit guy
2005 Forester X & XT VF39
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13,008 Posts
I test fit 245/45/18 Conti extremecontracts on my 18x8 +51 Superlegs and they fit perfect. Not rubbing on the fender or strut. I think on +44 rims it would be pretty close to the fender in the back, but if it rubs it wouldn't be by much.
 

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Premium Member
2007 Forester XT 4EAT-VTD
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2,138 Posts
Discussion Starter #8
Thanks to all for your feedback!

My current combination of Yoko Advan S4s in P235/50-17 on 17 X 7.5 et48 are at the limit of rear fender clearance. They did contact the rear fenders once when I had passengers in the rear and hit a sharp dip in the road at about 50 MPH. This is on Swift springs and - 1.5 degrees camber.

Tire selection plays a big role. The Advan S4s run really wide in the tread, with the side wall being almost straight up to the edge of the tread (as opposed to a more curved side wall on tires with equal cross section but with a narrower tread). The contact point on my current set up is about one inch down from the tread on the sidewall. With more offset (et44 vs et48) and a taller tire (26.4 vs. 26.7) on a 18 X 8.5 with P245/45-18, I am sure I would have major problems with a wide tread tire like the Advan S4 because (1) the tire is taller and (2) the contact point would be higher up - perhaps on the shoulder or tread itself.

If I were to do this, tire selection will be critical...
 
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