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2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Wheels / Tires / Suspension / Brakes Will It Fit
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      07-28-2015, 11:24 AM   #1
2tek
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Will It Fit

Finally got round to start upgrading my F10 520D
Did a Gladen/Mosconi sound upgrade this weekend..my oh my. Also got some coding done to enable Enhanced Bluetooth, Odo reading in MPH and i got the Office function too!

Looking to pull the trigger on a set of wheels to upgrade from the 17 stock

Wheel in sight has the following specs
Front 9 x 20 ET 35
Rear 10.5 x 20 ET 45

The dealer has recommended the following tyre size
Front 245/35
Rear 285/30

Just need further input before i go ahead with this, so will it fit

Kind regards
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      07-28-2015, 11:58 AM   #2
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The wheels will fit with no problem, please see live example of the wheel set with the same size but more aggressive offsets et25 et30: http://f10.5post.com/forums/showthread.php?t=1078346 And you can find more pics here on the forum, to feel sure about your choice.

Your dealer has recommended right tires, there are two perfect sets for 20": 245-285 and 255-295. Both sets have identical rolling diameters front vs. rear. My opinion your tires will sit like square or small stretch.

And you may want to consider some spacers 10mm all around. Good ones are from Macht Schnell or Renn Motorsport or whatever else if you want to.
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      07-28-2015, 12:55 PM   #3
2tek
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The spacers will be for a more aggressive look to make the front 25 and rear 35 right?
I will try them when the wheels land, if they don't stick out too much then its fine. I'm guessing the advantage of the offsets I'm getting as against getting straight out ET 25/35.
Thanks.
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      07-28-2015, 12:59 PM   #4
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Quote:
Originally Posted by 2tek View Post
The spacers will be for a more aggressive look to make the front 25 and rear 35 right?
I will try them when the wheels land, if they don't stick out too much then its fine. I'm guessing the advantage of the offsets I'm getting as against getting straight out ET 25/35.
Thanks.
Right. They will not stick out much, and you will have options what to do.
BTW what are the wheels?
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      07-28-2015, 01:32 PM   #5
2tek
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The Vertini RF1.1 in Brushed silver.
I like simple lines.
My car is the Sophistico Grey 520d SE
Was contemplating Grey wheels but I think I'd stay with Silver and hopefully the Mrs doesn't notice the new purchase!
Stock are Silver
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      07-28-2015, 01:57 PM   #6
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OK I see, they look great.
And that's a smart way to conceal your little fiesta, worth to try!
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      07-28-2015, 03:36 PM   #7
2tek
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Many thanks for the input. Wheels on the way. Now to buy some rubber. Going with Toyos and its coming at 774euros

I cant justify spending more than 200 per wheel averagely on tyres
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      07-29-2015, 07:59 AM   #8
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Will the wheels swap invole transferring TPMS by default
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      07-30-2015, 10:41 PM   #9
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Quote:
Originally Posted by 2tek View Post
Finally got round to start upgrading my F10 520D
Did a Gladen/Mosconi sound upgrade this weekend..my oh my.
Kind regards
Impressions? Straight plug and play? Wondering how these compare to the Bav's?
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      07-31-2015, 11:39 AM   #10
2tek
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Quote:
Originally Posted by lsturbointeg View Post
Impressions? Straight plug and play? Wondering how these compare to the Bav's?
Its night and day. Not sure how they compare to the Bavs as Mosconi/Gladen fit is what is easily obtainable on this side of the pond


Link to the install
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      08-06-2015, 01:41 PM   #11
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update: dealer mailed me to say the wheels he was sent from warehouse is front ET 20!
Should i go ahead? I dont want any poking of wheels? Flush will be my optimum target.
F 9 x 20 ET 20
R 10.5 x 20 ET 45
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      08-06-2015, 02:42 PM   #12
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Dealer seems to be cheating a little. 20x9 ET20 is too agressive. Somebody has them refused.

All Vertini RF1.1 are being sold initially with the front ET35 rear ET45 as you said at the beginning, just watch:
http://www.ebay.com/itm/20-Vertini-R...-/201353284045
http://www.bonanza.com/listings/20-V...-550/257848744

The optimal wheel specs for F10 are: F 20x9 ET25 and R 20x10.5 ET35. That's why we were talking about the 10mm spacers option for the initial specs. Ask the dealer "Is there still a room for changing offsets?" and let's see what he says then.
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      08-07-2015, 04:28 AM   #13
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I have mailed him. He mentioned ET 14 lol.
From this forum i gather that front ET for a 20 x 9 should be between 35 - 25?
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      08-07-2015, 05:26 AM   #14
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Return mail from dealer

"I can’t because they don’t make ET25 they make ET20 or ET35 I asked them for a staggered set of 20” for an F10 because it is a new wheel I have asked them to send the fitments that they recommend for your car, the fact that it is lowered or not makes no difference, the wheels ET20 sit perfectly on the front, if you are saying that you don’t agree the only way I can change the fronts is to wait for our containers in mid to end of September when ET35 comes in but the front 9x20 ET20 wheels are only going to be 6mm further outwards than the line with the rear wheels which are already not agressive but ET35 will be 9mm further inwards than the line with the rear wheels & will not look anywhere near as good, lots of German manufacturers make ET15, ET19 ET20 etc with TUV for the front of an F10 it is a normal fitment because that car can take a huge range of offsets the rears are ET45 which is certainly not aggressive so 6mm further outwards on the front is nothing really"
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      08-07-2015, 07:45 AM   #15
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OK good to see the dealer is making efforts to help. Let me comment and suggest more info for your decision.

1. Another member with the same wheels of the same sizes (you know him) http://f10.5post.com/forums/showthread.php?t=1150651 says, he’s got the fronts ET25 (post #8).

2. Look at the pic. in the post #11 http://f10.5post.com/forums/attachme...1&d=1437184783 this is the proper shooting angle to see how the front wheel (ET25) are very much flush to the fender. Another 5 mm will make ET20 and a little poke.

3. See my front wheels. 20x8.5 and this is ET20. You can see Michelin PSS front tire has a triangle sidewall that pokes a little, while the rim is just level to the fender. Having 20x9 with the same offset ET20 will bring the rim level +6mm just to the tire’s edge.

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4. Now see the rears 20x10 ET28 that is equal to 20x10.5 ET34. Here is pretty much clear you will be fine with ET35 or you will be tucked 10mm with ET45 (as discussed).

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Let me make some conclusions:
- Dealer can be uncertain and can make mistakes. He cannot know every millimeter of every rim because he has a number of car brands with a number of models and a number of rim types. My own wheel dealer made mistakes regardless crazy price of the wheels. This is not cool, but this is life.
- The large threads here like this one: http://f10.5post.com/forums/showthre...=664780&page=2 tell us the good offset for 20x9 front is ET25 that equals 20x8.5 ET20 (see my case). Also for rears 20x10.5 ET34-35 is fine.
- Your dealer tells you the ET25 doesn't exist but another member has it (so I trust), and it looks great.
- Measurements of offset is simple but people can skip it just looking at the specs. I did measure my wheels myself and sure about my own numbers.

I really want to help you, so I recommend to share this info with your dealer and work it out together. This is known issue: different wheel designs (especially shape of wheel barrel lips) can create a bit different ET and look differently, so after all calculations the final thing is to put the wheels on your car and see.

Talk to dealer, share your concerns and let him to commit for the test fit. If he insists on ET20 and it wouldn't fit, he will replace it with ET25 or ET35 whatever is really available.

Hope it helps
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      08-07-2015, 08:44 AM   #16
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Many thanks for breaking this down in a very simple way.
I will speak to the dealer and it might mean waiting a few weeks. I will like to get this right. Unfortunately for me the dealer is in France and I'm in Ireland so its not a matter of Trying on wheel and returning it if it doesn't suit.
The fault is not even mine as even the invoice he gave me was for the ET35/45.
Hankook ventus tires just came through smh.
245/35 and 285/30

I used some online offset calculator and its saying I will get 23mm poke with the ET20. That's a whole 2cm. Even looking at my stock 17 wheel another 1 cm will make it flush. 2cm is way too much.

Thanks again.
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      08-07-2015, 09:18 AM   #17
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Let me take another 5 minutes to check the dealer's suggestions. Found lots of a confusing, but OK different people have different level of experience.

Quote:
Originally Posted by 2tek View Post
Return mail from dealer
"I can’t because they don’t make ET25 they make ET20 or ET35 I asked them for a staggered set of 20” for an F10 because it is a new wheel”
- They do make ET25 as confirmed by another member.

“I have asked them to send the fitments that they recommend for your car, the fact that it is lowered or not makes no difference”
- This is not true. Lowered cars allow more aggressive fitments as the wheel cumbers inwards a bit when lowered.

“the wheels ET20 sit perfectly on the front”
- Based on the widest observations and experience, 20x9 front wheels need ET25. In contrast, the pics of another Vertini wheels customer show the ET25 is perfect.
- Disclaimer: it really can vary a bit depending on tires and shooting angle, however nobody knows for sure until tested.

"if you are saying that you don’t agree the only way I can change the fronts is to wait for our containers in mid to end of September when ET35 comes in"
- Dealer confesses: he promised 20x9 ET35 but failed, as they just don’t have this spec on stock now.

"but the front 9x20 ET20 wheels are only going to be 6mm further outwards than the line with the rear wheels which are already not aggressive but ET35 will be 9mm further inwards than the line with the rear wheels & will not look anywhere near as good,"
- These "only 6 mm" can totally change fitment. For example, 20x9.5 ET40 fronts will hit a suspension’s arm, while the ET35 will work fine.
- Nobody cares about the line with the rear wheels, they are already staggered. All focus is to the flush fit to the wheel fenders.

"lots of German manufacturers make ET15, ET19 ET20 etc with TUV for the front of an F10 it is a normal fitment because that car can take a huge range of offsets"
- Pointless statement. Sole offset has no value until linked to a specific rim width.

"the rears are ET45 which is certainly not aggressive so 6mm further outwards on the front is nothing really"
- Correct, the 20x10.5 ET45 is not aggressive, the proper offset is ET35 that they apparently don't have on stock, too. And again, front offset has nothing to do with the rear one.
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      08-07-2015, 09:29 AM   #18
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Quote:
Originally Posted by 2tek View Post
Many thanks for breaking this down in a very simple way.
I will speak to the dealer and it might mean waiting a few weeks. I will like to get this right. Unfortunately for me the dealer is in France and I'm in Ireland so its not a matter of Trying on wheel and returning it if it doesn't suit.
The fault is not even mine as even the invoice he gave me was for the ET35/45.
Hankook ventus tires just came through smh.
245/35 and 285/30

I used some online offset calculator and its saying I will get 23mm poke with the ET20. That's a whole 2cm. Even looking at my stock 17 wheel another 1 cm will make it flush. 2cm is way too much.

Thanks again.
OK I see. Distant dealer is a problem. The initial invoice ET35/45 was just a standard one, and we knew what to do: spacers, however this is extra cost plus another set of longer lug bolts.. Good to hear you've got the tires.
Online calculation was not correct, with 9" the ET20 pokes 5-6mm, ET25-26 will be fine.

You can try another dealership. Maybe call Vertini Wheels UK http://vertiniwheels.com/Dealers.html
Wheel factories hate to deal with the individuals (you see why), but normally every modern tire shop can be a customer representative between you and the factory.

Good luck
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      08-07-2015, 11:16 AM   #19
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The dealer isnt entirely helpful and he is making excuses. He is quite persistent that it is the ideal wheel. I've emailed me to let him know he can send the rim. I will try it on and its not suitable I will return them to him. Such headache.
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      08-07-2015, 12:03 PM   #20
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I'm gonna answer your PM here.

If those wheels only comes in ET20 and ET35, and you want no poke, you should get ET35.

If you were to lower it, then you can go with a lower offset.
Because when you lower the F10 the front tires cambers in, so the more you lower it, the lower offset you'll need to get flush fitment.
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      08-07-2015, 12:33 PM   #21
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Thanks Remmib.
I've emailed dealer to send the 20et and to try but he is saying I will pay to ship it back if not suitable. I contacted Vertini on Facebook. They gave two fitment suggestions
A. Aggressive ET20 and ET35
B. Non Aggressive ET35 and ET45
Now I wonder why my dealer got a front aggressive wheel and a rear non aggressive wheel as a package.
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      08-13-2015, 03:47 PM   #22
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Wheels delivered today, but I'm away on holidays. Will be home in 3 days and mount them on Monday.
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