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2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Wheels / Tires / Suspension / Brakes Hk 520i 20"rims question
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      03-02-2012, 08:19 AM   #1
wukelvin
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Hk 520i 20"rims question

Just deposit on rims and tyres, the shop suggests 20"forgestar f14 20x9.5jx120(245/35/20), 20x10.5jx120(275/30/20)! Is it right ??? Thanks for all guys
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      03-02-2012, 09:39 AM   #2
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I have the same rims. Your tire spec. should be standard.

My tires are 255/35/20 and 285/30/20. Only spec. which fits my rims for these tires, a bit wider.

Both specs. are alright.
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      03-02-2012, 09:58 AM   #3
wukelvin
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Thanks RC3 , but one more question, is it ok if it becomes front 9j and rear 10j ? I have no idea about this !!!
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      03-02-2012, 10:43 AM   #4
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same wheel for sale in classified here
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      03-02-2012, 11:13 AM   #5
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Quote:
Originally Posted by wukelvin View Post
Thanks RC3 , but one more question, is it ok if it becomes front 9j and rear 10j ? I have no idea about this !!!
They don't make 9J and 10J for our F10.

The wheel width plus the offset are quite aggressive. So be careful when you parallel park and turn and tight driveways. I scratched my rims many times at those places.
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      03-02-2012, 11:14 AM   #6
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Quote:
Originally Posted by zero_z4 View Post
same wheel for sale in classified here
That's a good deal.
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      03-02-2012, 12:02 PM   #7
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Quote:
Originally Posted by RC3 View Post
They don't make 9J and 10J for our F10.

The wheel width plus the offset are quite aggressive. So be careful when you parallel park and turn and tight driveways. I scratched my rims many times at those places.
Yup. The width of the F14s for concave is one of the reason that I ditched them for something else......
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      03-02-2012, 12:20 PM   #8
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Quote:
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Yup. The width of the F14s for concave is one of the reason that I ditched them for something else......
Yup, but the aggressive offset looks pretty good from the back.

I thought the main reason why you ditched the F14 is the color combo. A blob of grey doesn't look too good, huh?
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      03-05-2012, 09:26 PM   #9
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Wukelvin, I think you'll want 9 instead of 9.5 for the front. 9 will fit as is and is the semi concave most folks are running. If you did 9.5, it would be the deep concave in the front, and from my research, would need you to either pull or roll the front fender.
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      03-06-2012, 09:43 AM   #10
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Quote:
Originally Posted by jdmfrogg View Post
Wukelvin, I think you'll want 9 instead of 9.5 for the front. 9 will fit as is and is the semi concave most folks are running. If you did 9.5, it would be the deep concave in the front, and from my research, would need you to either pull or roll the front fender.
You are right. I just looked at my wheel spec. again and the front should be 9J and I am running 255.

Not sure Kelvin made a typo or Forgestar is coming out with new spec.
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      03-06-2012, 02:18 PM   #11
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I ordered some F14s as well (still waiting for shipment) and was really trying to see if I could get the 9.5 to work in the front so I can take advance of the deep concave model... but my research pointed to the fact that you'll need to do significant mods to the front fenders and that 9.5 in the front might create unwanted "tracking" and impact performance.

Maybe in the future they'll find a way to offer deep concave in the 9 inch width.
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      03-06-2012, 09:58 PM   #12
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Quote:
Originally Posted by jdmfrogg View Post
I ordered some F14s as well (still waiting for shipment) and was really trying to see if I could get the 9.5 to work in the front so I can take advance of the deep concave model... but my research pointed to the fact that you'll need to do significant mods to the front fenders and that 9.5 in the front might create unwanted "tracking" and impact performance.

Maybe in the future they'll find a way to offer deep concave in the 9 inch width.
Thanks for your advice, i think i need to contact my shop, and change the order of front rims from 9.5j to 9j !!!
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      03-06-2012, 11:17 PM   #13
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Quote:
Originally Posted by RC3 View Post
Yup, but the aggressive offset looks pretty good from the back.

I thought the main reason why you ditched the F14 is the color combo. A blob of grey doesn't look too good, huh?
RC3,

agree, it's bit grey than what I expect, but looks more sporty IMO.

anyone can share your tyre pressure for 255/35/20 and 285/30/20?
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      03-07-2012, 12:23 AM   #14
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Quote:
Originally Posted by maomaopph View Post
RC3,

agree, it's bit grey than what I expect, but looks more sporty IMO.

anyone can share your tyre pressure for 255/35/20 and 285/30/20?
Any photos?

I just have my pressure set to what's recommended. You can check out the label at your door jamb.
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      03-07-2012, 01:44 AM   #15
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I am looking to buy the forged1 seven mesh 20s black matte. Question what is the different if i get 20s or 21s ? Please advise?
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      03-07-2012, 06:30 AM   #16
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RC3,

you can refer to those photos on Z page first! I post mine later.
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      03-07-2012, 09:08 AM   #17
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I am looking to buy the forged1 seven mesh 20s black matte. Question what is the different if i get 20s or 21s ? Please advise?
Depends on the road condition at where you drive. 21" will be running 30 front and 25 rear profile tires, very low profile. If where you drive has roads like us in Hong Kong, I would recommend you to go with the 20".
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      03-07-2012, 09:09 AM   #18
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Quote:
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RC3,

you can refer to those photos on Z page first! I post mine later.
I thought your car is black. So the space grey is yours?

How much do they charge you? What kind of tires are your having?
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      03-07-2012, 10:31 AM   #19
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it's mine. tyres are Michelin PSS.
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      03-07-2012, 09:51 PM   #20
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Quote:
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it's mine. tyres are Michelin PSS.
Cool, excellent choice of rims and tires.
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      03-08-2012, 08:37 AM   #21
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thanks to brothers from hong kong
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