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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 04-24-2013, 10:20 AM
omiv21 omiv21 is offline
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19's without Lowering?

Guys I'm sorry if this has been posted before, but to you, this may be considered a dumb question. For my car (06' BMW 325xi), will 19's fit without lowering it? If so, is there a certain tire size that will work?

My stock rims are 16's. I attached a photo so you can see what I'm working with.
Any help is appreciated.
Thanks

Dave
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  #2  
Old 04-24-2013, 10:27 AM
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floydarogers floydarogers is offline
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Yes. See tirerack.com for wheel and tire sizes.
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Old 04-24-2013, 10:37 AM
omiv21 omiv21 is offline
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should I be going staggered? different size rim in the front vs. back? does it matter? does it help? does it look better?
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  #4  
Old 04-24-2013, 10:40 AM
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19s will fit fine. Lowering the car is not necessary for larger wheels. It actually could create the possibility of having issues with the fitment of larger wheels. Check TireRack for appropriate tire sizes.
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  #5  
Old 04-24-2013, 12:44 PM
omiv21 omiv21 is offline
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19's without Lowering?

Is it worth the rough ride getting 19's vs a smoother ride on 18's? I have been searching photos and 19's definitely look better but not sure. Any of u guys have 19's and don't notice a difference? Would like to see pics if possible.


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  #6  
Old 04-24-2013, 12:51 PM
Michael Schott Michael Schott is online now
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The lower the profile the rougher the ride so 18" tires are a better choice than 19's. Looks are the only reason to go for larger diameter wheels on your car.

Also, you will get better fuel economy and better handling with the smaller wheels. Larger wheels are heavier.
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Old 04-24-2013, 01:31 PM
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Quote:
Originally Posted by omiv21 View Post
Is it worth the rough ride getting 19's vs a smoother ride on 18's?


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No.
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  #8  
Old 04-24-2013, 01:41 PM
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captainaudio captainaudio is offline
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Quote:
Originally Posted by omiv21;7541264[B
]Is it worth the rough ride getting 19's vs a smoother ride on 18's?[/B] I have been searching photos and 19's definitely look better but not sure. Any of u guys have 19's and don't notice a difference? Would like to see pics if possible.


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Old 04-24-2013, 01:47 PM
surfcity335i surfcity335i is offline
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Quote:
Originally Posted by Michael Schott View Post

Also, you will get better fuel economy and better handling with the smaller wheels. Larger wheels are heavier.
You sure about that? I mean, if the circumference of the wheel/tire combination is the same, the only way 19's are heavier than 18's is if the aluminum weighs more than the rubber. And even if it does, I've gotta believe we're talking c-hairs here.
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  #10  
Old 04-25-2013, 06:37 AM
Michael Schott Michael Schott is online now
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Quote:
Originally Posted by surfcity335i View Post
You sure about that? I mean, if the circumference of the wheel/tire combination is the same, the only way 19's are heavier than 18's is if the aluminum weighs more than the rubber. And even if it does, I've gotta believe we're talking c-hairs here.
Check out this test Car and Driver did a few years ago:

http://www.caranddriver.com/features...d-tires-tested

The 19" tire/wheel combination is 3 pounds heavier per wheel than the 18 and 6 more than a 17" combo.
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  #11  
Old 04-25-2013, 10:12 AM
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bear-avhistory bear-avhistory is offline
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Depends on the wheel. I have 18" 313 on one car & 19" 313 on the other will pay with the weights during the summer when doing a
"clean the winter off the bottom".

That being said its my understanding, could be totally wrong heard it second hand, that the 19" are BBS forging & the 18" are BMW castings. That will also effect the weight & certainly the strength of the wheel.
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Old 04-25-2013, 02:22 PM
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Quote:
Originally Posted by surfcity335i View Post
You sure about that? I mean, if the circumference of the wheel/tire combination is the same, the only way 19's are heavier than 18's is if the aluminum weighs more than the rubber. And even if it does, I've gotta believe we're talking c-hairs here.
The weight of a cylindrical object increases by the square of the radius. Aluminum has approximately ten times the density of tire rubber.
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  #13  
Old 04-25-2013, 07:12 PM
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BB_cuda BB_cuda is offline
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Punched some simple stuff into a spread sheet to take into acct larger wheel also has larger inside diameter. The Di being bigger is a competing effect to wheel being heavier. Anyway, i assumed 8.5" wide wheel, 19 Do and 18" Di (thickness is 0.5", i know that is too thick). Compared this to same thickness 18" Do and 17" Di with same width. Larger wheel is 1.34 lb heavier. The tire for the 19" wheel will slightly decrease in weight but we are only talking about the sidewall getting shorter by 1/2". Larger wheels are heavier if you run the numbers.

This is why the hybrids runs the little wheels. The other advantage of running smaller wheels from an economy standpoint is a lower radius of gyration. Basically think about the figure skater that is spinning and then she brings her arms closer to her body and accelerates the spinning speed. Same weight of arms but more efficient spinning speed.

I wanted to go to 19" wheels too but read too many people tearing wheels up with the shorter sidewalls. I actually considered going to a taller series for the 18"s my car uses. I did not do it as i didn't want to kill the fuel mileage by using heavier tires. I enjoy the ~ 40mpg the D gets on the highway. I got a more smooth ride instead by going to go flat tires. Go flat is funnier term than non run flats.

Personally, if it were me i would get 17" wheels with square set up (same size front and rear) to allow front/back tire rotation and keep the somewhat taller sidewall by having the 17s. The tires will be cheaper this way too. 19" tires cost more than 18s that cos more than 17s. You will lay out serious $$$$ to go to 19s.

Looking back at your car, it is an 325xi. All the more reason to be running a square setup.

Last edited by BB_cuda; 04-25-2013 at 07:18 PM.
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  #14  
Old 04-25-2013, 08:17 PM
mentos876 mentos876 is offline
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it will fit with no problem, but it will look kinda funky
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  #15  
Old 03-18-2014, 12:07 AM
matreyia matreyia is offline
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Quote:
Originally Posted by bear-avhistory View Post
Depends on the wheel. I have 18" 313 on one car & 19" 313 on the other will pay with the weights during the summer when doing a
"clean the winter off the bottom".

That being said its my understanding, could be totally wrong heard it second hand, that the 19" are BBS forging & the 18" are BMW castings. That will also effect the weight & certainly the strength of the wheel.
Hi Kevin,

Quick question for you. Were your 19" 313 heavier or the same weight as your 18" 313 set? I been trying to find the answer to this for months to no avail. Thanks for your time. I hope you still have your cars!

VT
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  #16  
Old 03-18-2014, 06:21 AM
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CALWATERBOY CALWATERBOY is offline
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Quote:
Originally Posted by Michael Schott View Post
The lower the profile the rougher the ride so 18" tires are a better choice than 19's. Looks are the only reason to go for larger diameter wheels on your car.

Also, you will get better fuel economy and better handling with the smaller wheels. Larger wheels are heavier.

Pish-posh! There are very good reasons to go 19", even 20" or more!

Just think of the stiffness available with larger wheels. Cornering is so enhanced....and the way they fill the wheel well is an aerodynamic plus.

See here Mr. Schott, as most of us are aware, you've outed yourself. You will soon be leaving the BMW marque for inferior, possibly Oriental Engineering. Thus, a spoonful of salt must be taken with your comments, and being as how you're on borrowed time, we cannot take your comments as "Gospel." No.

I'm sure OP is aware of helium fill to offset heavier wheels. Other options such as Nitrous Oxide, the gas that yields a "lighter than air" feel to the car, have been explored. I do not believe larger wheels should be a negative for OP.

Consider the larger wheel profile to be a "canvas" - imagine what could be done! Options run from colors to actual video while in motion, enabled by timed LED's. OP - let no holds be barred!
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  #17  
Old 03-18-2014, 07:06 AM
fdriller9 fdriller9 is online now
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The wheel gap killed me. I'm now lowered on coilovers.

I'm running a square setup of 19 x 8.5 wheels with 235/35/19 Michelin Pilot Super Sports.

This is a really old photo of my car. I had BF Goodrich g-force tires mounted. They were loud as hell. Lots of road noise
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