01-14-2015, 07:23 PM | #1 |
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Hi. Guys from South Korea.
Hi Guys.
I'm a Korean riding F20 120d. want to change my wheels but here in korea there are not many wheels available to 1er hope I can get useful information about F20 I have one question. In Korea's F20 forum, people said installation just a spring to lower the car not together with shock will bring the bad balance to the car. I wonder how foreign users of F20 think about this. thx Last edited by Goo Tae Uck; 01-15-2015 at 12:21 AM.. Reason: reuploding the photo |
01-15-2015, 12:44 AM | #2 | |
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seem to be happy with that. I do however agree with the Korean forum members that replacing springs and dampers together is a lot better. I would not swap only the springs. |
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01-15-2015, 01:17 AM | #3 | |
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Thanks for your opinion. Do you also agree on the idea that changing only spring will unbalance the car? |
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01-15-2015, 01:30 AM | #4 |
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I do agree with them. A stock Bimmer is beautifully balanced with or without M-sport suspension. Replacing the springs might look great but they definitely not going to improve balance of your Bimmer. If you do it, do it with a combination of springs and dampers.
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01-15-2015, 01:37 AM | #5 |
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Changing the wheels 17" to larger 19" diameter will normally also change the profile.
Larger wheels should have a lower profile tyre than the ones you replace to stay within the same overall wheel/tyre rolling diameter (that is what the suspension is set up for and the speedo). You will be surprised how 19" wheels with lower profile tyres will change the stance of the car and its handling characteristics. I would change the wheels first before going to all the trouble of changing the suspension. Once you have the new wheels and have done a few Ks then decide if you need to change the suspension You may have to go online and buy them over the net from Japan or get a set from one the other 1er owners from the forum |
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01-15-2015, 02:16 AM | #6 |
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The problem is that shorter springs are stiffer than the stock ones, and then the dampers will be too soft. It ends up with a suspension that oscillates too much. This can cause wheel bouncing and bottoming out. When the suspension hits the rubber limiters, it stiffens up significantly, and this upsets the balance of the car. The oscillation will also reduce grip and comfort.
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01-15-2015, 02:18 AM | #7 | |
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Thanks. Is there any damper that shows great combination with H&R or Eibach Pro-Kit springs? As there aren't many users for F20 here in Korea, hard to find the good combination for our car. |
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01-15-2015, 02:20 AM | #8 | |
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really? I'm worried about the performance that would become bad when I change mine to 19" wheels. If I set 19" to my F20, which size of tires do you recommend? |
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01-15-2015, 06:29 AM | #9 | |
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I am happy with the 18" wheels on my 125i M Sport. I think that most 17" use a 205/50R17 whereas a 19" can have 30 or 35 Have a look though the thread 'Please post pics of your F20' to see some of the 1ers fitted with larger wheels. I am sure that some of the others reading this post who are in your region can also help you |
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01-15-2015, 09:11 AM | #10 | |
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Hi Goo Tae Uck.
I noticed your profile signature says you drive F20 118d. So seems the Korean BMW site: 120d looks available in M Sport Package only, which is lacked by the car in your pictures.
So what do you really ride once you've mentioned? (No offence, I don't mind dreaming. I just mind cheating and improper application, if any. ) In regard to BMW originals, just the opposite: it's only the 380 Y-Spoke 17" (I like their look a lot, wanted them at least for the winter) pictured in the starting message that wear 205/50. All the rest are 225/45 (front ones, if applicable). Amazing, but the 2" rim diameter difference is so hard to spot! Quote:
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01-15-2015, 04:56 PM | #11 | |
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I just attach the 120d emblem to the 118d sports. it's ok. i don't mind your saying like that. what do your prefer 19" or 18" ? most korean users put just 18" to their 1er hatch. |
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01-15-2015, 05:42 PM | #12 | |
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I guess I'd choose the sportier 19", although I don't appreciate huge rims looks. Yet, the ride might appear too firm then: the road quality should be really good. |
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01-15-2015, 11:58 PM | #13 | |
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Thanks for your answer. could you please tell me where i can see all of the specs for the original BMW wheels? |
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01-16-2015, 01:25 AM | #14 |
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When people have several sets of wheels, they will usually prefer smaller wheels than 19" for track days or autoX. Smaller and lighter wheels generally perform better. Large wheels are mostly for looks, and room for huge brakes.
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01-16-2015, 01:58 AM | #15 | |
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Depending on the number of spokes the 19" can look a bit of a wagon wheel on a 1er with standard brake calipers Anything in a 5 spoke (single or double spoke) should look good |
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01-16-2015, 06:13 AM | #16 | |
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Just click the link, click the "Start wheel configurator" (the blue button or the link below the introduction text) and proceed to fill in your vehicle information. When through, notice it's the winter sets presented by default: you need to choose "Summer" on the left I guess. Click the rim to choose (the style/name are shown above), use the view buttons on the right to turn the car/zoom and the "Product details" button to review the complete info (with tyres and "Part number" for reference to order at your dealer) on the rim selected. |
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01-16-2015, 06:40 AM | #17 | |
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Nice to know as my rims (both sets) are 17", large enough to house my M Sport brakes, safe(?) from the "show off" point, cheaper and their looks is just all right for me: I don't appreciate "too much" of anything. 18" could be still better but impractical on poor roads anyway. Thank you! |
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01-16-2015, 07:51 AM | #18 | ||
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01-16-2015, 08:43 AM | #19 | ||
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Formula One is a different world, I suppose: lot's of regulations and different technologies - rock-hard suspension(?), aerodynamics extremely involved, quite different tyres, etc. It could be as different as the looks, I guess. |
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01-16-2015, 09:01 AM | #20 | |
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The tyre deformations of the high profile tyres do however also soak up some of your steering inputs, causing slightly slower steering response. This is mostly noticeable when driving very fast in strong wind, where you can feel the car move around a bit more. |
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