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The Tire Rack's Tire & Wheel Forum
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Old 03-26-2013, 06:02 PM   #1
Snapasaurus
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Tire question- 325i

Hey guys, it's time for me to get some new tires for my 325. The previous owner had a staggered setup with 205s in the front and 245s in the rear. BMW recommends 205s all the way around, yet with the tires I'm looking at, the 245s are only 8$ more per tire. Besides the more aggressive rear end look, is it worth the extra 16$ to throw wider rears on?

Thanks in advanced.

Last edited by Snapasaurus; 03-26-2013 at 06:21 PM.
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Old 03-26-2013, 06:15 PM   #2
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It's a matter of personal preference. staggered set up looks great, but
you can't rotate wheels, so tires won't last as long.
Plus, if you have the stock wheels, 255 are too wide for the rim.
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Old 03-26-2013, 06:21 PM   #3
Snapasaurus
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I thought BMW doesn't recommend rotating tires anyways? And whoops, I meant 245s. That's what I have on them now, and that's what I was looking to replace with. My bad.
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Old 03-26-2013, 06:29 PM   #4
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If the tire is too wide for the rim, there is too much tire flexion, real bad for
handling. Better to go with stock tire size, maybe plus one.
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Old 03-26-2013, 06:51 PM   #5
Snapasaurus
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Originally Posted by lszlszx View Post
If the tire is too wide for the rim, there is too much tire flexion, real bad for
handling. Better to go with stock tire size, maybe plus one.
Would you say 245s are too big for the stock 16s, than?
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Old 03-26-2013, 07:13 PM   #6
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Yes, they are. I think, your rims are 7" wide, the ideal tire width is 205 for that.
There are alot of used rims for sale cheap, do some research before you buy tires. Like syle 44 which came with the sport suspension. 17x8
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Old 03-26-2013, 09:55 PM   #7
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I like lslsx suggestion. Buying 17in rims. I don't like the ride you get on the 16in rims.

My car has the same size tires all around and I hate it. I have 17in rims though. And when I purchased the car it came with the same size tires all around 225s. My previous bimmer that I had, the wheels were staggered.. loved it.
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Old 03-26-2013, 10:27 PM   #8
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I thought BMW doesn't recommend rotating tires anyways?
I don't know where this came from, but I think it's silly and I would ignore it completely.

Square setups are better than staggered from pretty much every perspective that I can think of except looks.
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Old 03-26-2013, 10:43 PM   #9
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i have a sedan with the sport suspension and i just put on a set of 18x8.5 et38 offset with 245/40/18 and the look and fit great.If i have 2 passengers the right rear will will rub if i go over train tracks or something.Whith that said i havent rolled the fenders.. i think i will do that tomorrow.
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Old 03-27-2013, 09:03 AM   #10
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I don't know where this came from
The "don't rotate tires" advice is in the Owner's Manual. They say, IIRC, this is b/c of different wear characteristics.

Like you, I ignore it, with rotations every 6-7000 miles. I've not noticed any overly unusual wear.
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Old 03-27-2013, 09:13 AM   #11
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Originally Posted by Snapasaurus View Post
Hey guys, it's time for me to get some new tires for my 325. The previous owner had a staggered setup with 205s in the front and 245s in the rear. BMW recommends 205s all the way around, yet with the tires I'm looking at, the 245s are only 8$ more per tire. Besides the more aggressive rear end look, is it worth the extra 16$ to throw wider rears on?

Thanks in advanced.
The question is about appearance, right? Because, for 90% of owners, a quality 205/55-16 will be more than adequate from a performance perspective.

If you have 7" wheels, then 225/50 is as wide as you should go. And a square setup all around will provide better a better balance: more grip at the back end will tend to induce understeer. Wide tires in the front will contribute to tramlining. Other things being equal, wider tires hydroplane more easily than narrower tires as well, which might be a major consideration in the PNW.
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Old 03-27-2013, 09:45 PM   #12
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I have a 2001 325i Sport Package (rides 1" lower). I called in to discount tire to make sure the wheels I wanted to buy would fit (18X8.5 Squared +35 offest). They said I could go up to 18X9 in the front.

Point is I rolled my fenders but my R/H rear wheel still scrapes when the suspension is compressed!! The lip clears but I want to tear out the damn plastic in my wheel well!

Any ideas or suggestions!? thanks guys...
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Old 03-28-2013, 10:39 AM   #13
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Until you post the exact rim widths and tires size I cannot say for sure, but in the vast majority of cases a 205 width tire will not fit on the same wheel width as a 245 width tire. So you may not have a choice of using 205's all around.
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Old 03-28-2013, 11:28 AM   #14
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These are the wheels I am on. Stock non-sport package 16s. I am in class right now, so I can't check the dimensions of the wheels, but I know for a fact the fronts are 205s and the rears are 245s. I do not believe the wheels themselves are staggered.
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Old 03-28-2013, 12:59 PM   #15
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Personally, I prefer square setups for the ability to rotate.
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Old 03-28-2013, 06:15 PM   #16
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Originally Posted by Snapasaurus View Post
These are the wheels I am on. Stock non-sport package 16s. I am in class right now, so I can't check the dimensions of the wheels, but I know for a fact the fronts are 205s and the rears are 245s. I do not believe the wheels themselves are staggered.
Yep, that's what I thought you'd have. I think you want it to look sporty, upgrade to 17" and then you can decide about square, or staggered setup.
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Old 03-30-2013, 10:10 PM   #17
Snapasaurus
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I'm just going to roll on the stock square 205 set up. I really wish I had money for a set of 17 or 18s, but unfortunatly that isn't the case. Thanks for the help guys!
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Old 04-16-2013, 06:19 PM   #18
Bimmerboye46
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So, after rolling my fenders until they have clearance, grinding the plastic inside of the wheel well (where the fender mates with bumper), I sill dont have clearance on the metal clip that holds the bumper to the fender! It looks like I will need body work done to flare the fender/bumper a bit, similar to an M3.

My alignment is maxed out at -3 chamber. My tires are aligned per spec but I am still having problems mainly with my rear right corner wheel well. Any ideas/solutions?

Thanks
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Old 04-24-2013, 04:41 PM   #19
e46bonestock
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I'd stick to 205.
245/250 is too wide, more contact patch on the road, more tire roll resistance, lowers fuel economy.
So unless you tracking the car, it won't help.
Even if you do track the car, you're suspension setup will need adjusting. aka spring rate.
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Old 04-25-2013, 07:00 AM   #20
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245/250 is too wide, more contact patch on the road
Other things being equal, the size of the contact patch does not change. What changes is the shape of the patch. Wider tires have shorter and wider patches which is better for cornering. Not as good for some other things.
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