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Old 08-18-2012, 09:19 PM   #1
rufgtr
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Default 04 subaru wrx 18x9.5 rear, 18x8 front awd setup?

Import tuner had an article about a wrx wheel set up 18x9.5 rear and 18x8 front
has anyone ran with setup like that? and the tire size 265/35/18 rear vs 245/45/18 front... or 245/40/18? on awd wrx?
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Old 08-18-2012, 10:30 PM   #2
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Quote:
Originally Posted by rufgtr
Import tuner had an article about a wrx wheel set up 18x9.5 rear and 18x8 front
has anyone ran with setup like that? and the tire size 265/35/18 rear vs 245/45/18 front... or 245/40/18? on awd wrx?
Neither. Staggered is bad, and you haven't even searched to see why.

Forget the idea and move on.
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Old 08-19-2012, 02:07 AM   #3
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Bad idea is bad.
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Old 08-21-2012, 01:48 AM   #4
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May have been a RWD wrx, that's been done and staggered fitment has been done, but most likely just forget about it.
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Old 08-21-2012, 11:30 AM   #5
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Match the rolling diameter of the tires and it will be fine (see 225/40 and 255/35.)

It'd be purely cosmetic though, and will probably make the car handle worse. It'd probably look pretty cool tho


and ffs guys, instead of saying "NO, BAD IDEA NOOB, GO DIE", perhaps telling them why it would be a bad idea would work better.
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Old 08-21-2012, 11:45 AM   #6
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Originally Posted by DeleriousZ View Post
Match the rolling diameter of the tires and it will be fine (see 225/40 and 255/35.)
I have read that it is acceptable if the difference in rolling diameter is less than 1/4" BUT and here is the reason that people say no to a staggered setup. It will cause your wheel bearings to wear prematurely and you will run the possibility of eating up your center differential. For a "cool look" replacing a wheel bearing is going to cost you $70 a pop and a center diff is going to cost you a little over a $1000 if you do the work. All things to consider.
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Old 08-21-2012, 02:02 PM   #7
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Originally Posted by Improbus

I have read that it is acceptable if the difference in rolling diameter is less than 1/4" BUT and here is the reason that people say no to a staggered setup. It will cause your wheel bearings to wear prematurely and you will run the possibility of eating up your center differential. For a "cool look" replacing a wheel bearing is going to cost you $70 a pop and a center diff is going to cost you a little over a $1000 if you do the work. All things to consider.
When you could easily buy a square set of wheels and run spacers in the rear if you want "that look".
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Old 08-21-2012, 03:31 PM   #8
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I'd love to see someone that's burned up diffs and wheel bearings. I've searched for it and all I can find is people saying not to do it and it will kill things, but I haven't been able to find real proof of it happening. Maybe I just suck at searching though.
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Old 08-21-2012, 04:20 PM   #9
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Originally Posted by DeleriousZ View Post
I'd love to see someone that's burned up diffs and wheel bearings. I've searched for it and all I can find is people saying not to do it and it will kill things, but I haven't been able to find real proof of it happening. Maybe I just suck at searching though.
Its not just Subaru's. People in the Quattro crowd have the same issues. When you run a staggered setup cornering at high speeds causes additional stress(Torque) on the center differential which will cause it to become damaged or break. It has to do with distribution of Torque on the center differential. With varying widths and sizes you change the torque distribution and the center differential is what suffers from it. As far as the wheel bearing failure in order to match rolling diameters and offsets you most likely will be using some weird combinations that weren't intended by the OEM. Wheel bearing failure can also happen when the offset strays too far from the OEM value where there are problems with the scrub radius which causes a suspension geometry change as well as extra wear on control arms and wheel bearings.
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Old 08-21-2012, 06:06 PM   #10
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Quote:
Originally Posted by DeleriousZ
I'd love to see someone that's burned up diffs and wheel bearings. I've searched for it and all I can find is people saying not to do it and it will kill things, but I haven't been able to find real proof of it happening. Maybe I just suck at searching though.
You do :P. if you look hard enough there are more than a few first hand accounts, as well as people alluding to what previous owners of their car experienced.

It's only only rolling diameter but grip tolerances between the front and rear. On non symmetrical full time and system, it's less of an issue.

Quattro and subarus awd are very different from each other.

There is no proven real world failure of wheel bearings from low offset wheels. I'm at 160k, and have run <et30 9"+ wheel set ups for over 80k. I am on my original wheel bearings. Thats right, they haven't needed to be changed once.
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Old 08-22-2012, 11:28 AM   #11
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Originally Posted by sc00by4life View Post
There is no proven real world failure of wheel bearings from low offset wheels. I'm at 160k, and have run <et30 9"+ wheel set ups for over 80k. I am on my original wheel bearings. Thats right, they haven't needed to be changed once.
While I haven't seen any proof of this yet as well, many mechanics preach about low offset ruining wheel bearings. ET30 isn't that low honestly. From my mechanic he said you would need to stray into the ET20 and lower to start causing bad geometry problems.

But in regards to the OP. Run Staggered if you want to. Take the advice of the posters with regards to rolling Diameter but be aware it may cost you down the road it may not. With cars you need to weigh out all the possibilities.
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Old 08-22-2012, 12:30 PM   #12
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Quote:
Originally Posted by Improbus

While I haven't seen any proof of this yet as well, many mechanics preach about low offset ruining wheel bearings. ET30 isn't that low honestly. From my mechanic he said you would need to stray into the ET20 and lower to start causing bad geometry problems.

But in regards to the OP. Run Staggered if you want to. Take the advice of the posters with regards to rolling Diameter but be aware it may cost you down the road it may not. With cars you need to weigh out all the possibilities.
The consensus on here is anything under et40.

My last 2 setups were 17x9 +10 and 18x9.5 +19.
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Old 09-21-2012, 03:22 PM   #13
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Quote:
Originally Posted by Improbus View Post
Its not just Subaru's.
If you moved the apostrophe from where it's not supposed to be and put it where it is supposed to be, the sentence becomes:
It's not just Subarus.

Quote:
Originally Posted by Improbus View Post
People in the Quattro crowd have the same issues. When you run a staggered setup cornering at high speeds causes additional stress(Torque) on the center differential which will cause it to become damaged or break. It has to do with distribution of Torque on the center differential. With varying widths and sizes you change the torque distribution and the center differential is what suffers from it. As far as the wheel bearing failure in order to match rolling diameters and offsets you most likely will be using some weird combinations that weren't intended by the OEM. Wheel bearing failure can also happen when the offset strays too far from the OEM value where there are problems with the scrub radius which causes a suspension geometry change as well as extra wear on control arms and wheel bearings.
Please stop trying to provide technical explanations.

Quote:
Originally Posted by Improbus View Post
While I haven't seen any proof of this yet as well, many mechanics preach about low offset ruining wheel bearings. ET30 isn't that low honestly. From my mechanic he said you would need to stray into the ET20 and lower to start causing bad geometry problems.
Was he ASE certified? Otherwise, I don't believe it.

Quote:
Originally Posted by murd3redSTi View Post
I have an 04 Sti, current setup is 18x9.5 rota grids with 235/40/18 tires. Grids won't clear brembos in the front so I had to run 5mm wheel spacers. I didn't use spacers in the back.. Only the front wheels. Could this mess up my diff as well?
No. Lots of folks run spacers to clear Brembos, it won't be an issue.

Quote:
Originally Posted by sc00by4life View Post
I'm at 160k, and have run <et30 9"+ wheel set ups for over 80k. I am on my original wheel bearings. Thats right, they haven't needed to be changed once.
Clearly, that's not true, because NASIOC says so.
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Old 08-21-2012, 05:50 PM   #14
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Coming from the audi world (used to own a b5 s4), the only thing I ever heard was 'make sure the tire diameters match within 3% like the owner's manual states'. I don't think I ever heard horror stories of people running staggered width tires. Perhaps I wasn't looking that hard though?

And yes, using low offset wide wheels definitely eats bearings faster, but that's part of the territory.
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Old 08-22-2012, 02:00 PM   #15
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Intersting. I'm going to be running an 18x9.5 et25 square setup on my outback soon, will let you know if I start eating wheel bearings lol.
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Old 08-22-2012, 02:57 PM   #16
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Quote:
Originally Posted by DeleriousZ
Intersting. I'm going to be running an 18x9.5 et25 square setup on my outback soon, will let you know if I start eating wheel bearings lol.
That's gunna be a hard fit on a gf....
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Old 08-22-2012, 03:41 PM   #17
DeleriousZ
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Roll, pull and camber
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Old 09-21-2012, 02:29 PM   #18
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I have an 04 Sti, current setup is 18x9.5 rota grids with 235/40/18 tires. Grids won't clear brembos in the front so I had to run 5mm wheel spacers. I didn't use spacers in the back.. Only the front wheels. Could this mess up my diff as well?
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