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General E46 Forum
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Old 01-20-2013, 06:27 PM   #1
erich330ci
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18-inch Advantage?

Putting new wheels on my 2004 330ci coupe (waiting for upcoming Apex EC-7 group buy). I've got sport package 17-inch M68s with 225/45 front & 245/40 rear. The tires have only have about 5K miles on them with plenty of life left in them. I don't plan to track the car, but I definitely enjoy a good deal of spirited driving. I'm just going for looks. What advantage would 18s give me?
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Old 01-20-2013, 06:27 PM   #2
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Just looks and maybe better handling to some extennt, if not you will get a harsher ride, more expensive tires, more prone to bends/cracks.

Last edited by Solidjake; 01-20-2013 at 06:28 PM.
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Old 01-20-2013, 06:34 PM   #3
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definitely will increase penis length after driving for extended periods of time
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Old 01-20-2013, 06:40 PM   #4
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definitely will increase penis length after driving for extended periods of time
Truth. I experienced 6" of penile growth on the 18" wheel plan.
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Old 01-20-2013, 06:42 PM   #5
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You may be able to fit overall slightly wider tires if the wheels are the perfect offset (you have more clearance from the strut on the inside with a larger diameter wheel), but this is negligible. Also, the shorter sidewalls will probably be slightly stiffer.

Outside of a track, you will never notice these things, and even on a track a novice wouldn't.

The weight will hurt you more than anything. The Apexs aren't super heavy iirc, but they aren't light either.
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Old 01-20-2013, 06:44 PM   #6
Solidjake
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18 pounds each is still better than 22-25 for my styles 197's
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Old 01-20-2013, 06:47 PM   #7
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During a Tech session with Steve Dinan he stated that the best combination of performance to weight ratio comes from the 18" wheel. I switched from 16" OEM to an 18" wheel and love the ride. Have been running 18" for the last ten years. Pot holes have cost me two wheels but I would have lost them even if they were 16" because of the size of the pot-hole. Depending upon the suspension the ride could become a little harsher; again that's a suspension thing. Just my two and a half cents worth...
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Old 01-20-2013, 06:52 PM   #8
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18" wheels aren't always heavier. My 18" wheels are noticeably lighter than my style 44s. Especially noticeable when mounting them
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Old 01-20-2013, 07:02 PM   #9
KOpower
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You already got the perfect dd setup with the m68

If ur crazy about looks - then go for the 18s

Not sure about the penile growth though ....
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Old 01-20-2013, 07:44 PM   #10
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Lower profile tire yielding less flex. That's pretty much it.
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Old 01-20-2013, 08:37 PM   #11
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[QUOTEr]definitely will increase penis length after driving for extended periods of time[/QUOTE]

Glad I moved up to 18s

OP, Imwas ine the same situation as you and decided to go 18". Car is in storage so I can't speak to experience with them, but I sure do love the look.
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Old 01-20-2013, 08:51 PM   #12
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Old 01-20-2013, 11:04 PM   #13
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What lcoleman said.

Pros:
stiffer sidewall
you will find a larger selection of wide 18" tires

Cons:
more expensive tires
heavier setup

I went with 17x9 (squared) APEX ARC-8's but if I did it again I would probably go with 18x9.
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Old 01-20-2013, 11:07 PM   #14
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Originally Posted by lcoleman View Post
You may be able to fit overall slightly wider tires if the wheels are the perfect offset (you have more clearance from the strut on the inside with a larger diameter wheel), but this is negligible. Also, the shorter sidewalls will probably be slightly stiffer.

Outside of a track, you will never notice these things, and even on a track a novice wouldn't.

The weight will hurt you more than anything. The Apexs aren't super heavy iirc, but they aren't light either.
Hah, yes they are. Maybe you are now calibrated to 4x100 E30 wheel world, but ~18lbs a wheel is light for these cars. Not the lightest, but light.

Now the EC-7 isn't as light or as good looking as the ARC-8 imo.

Zchild- what is best varies by chassis and car. What car was Steve Dinan referring to specifically? Do you know? Ideal diameter is not absolute.
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Old 01-20-2013, 11:55 PM   #15
taibinhvuong
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I have the original 17" wheels and also bought the BMW 18" wheels, the differences between them are the 18" gives you noticeable much better control and handling however a little harsher ride (never bother me anyway) even on normal daily drive. I currently put the 17" back on after the 18" tires were bald and I didn't want to pay premium for a set of new 18" tires.

Edit: The 18" used a little bit more gas too.

Last edited by taibinhvuong; 01-21-2013 at 05:12 PM.
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Old 01-21-2013, 02:20 PM   #16
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Noticed better handling with my 18s but little harder ride. Don't be cheap, cheap ones will be heavy and balance up terribly. If the rims don't balance nice with the thinner sidewall you will notice more vibration than poorly balanced 17s.

Also if you use tire shine like me, one convenience of 18inch wheels is that a garbage can lid covers the rim perfectly so when you spray the tire shine you can use a garbage can lid to cover the rim you just cleaned. So you keep your rims from getting greasy. I like that the most about my 18s actually haha.
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