Custom wheel offset

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Old Nov 26, 2016 | 02:32 PM
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Custom wheel offset

Guys I could use some help here. I am looking to have a set of forged wheels made for my car. I am looking at 9X20 and the rears at 11X20 right now. Should I be looking at a 12 inch rear wheel instead? If so should I run a 315 or 325? Any issues with the AWD? I just got a set of Michelin SS about 3500 miles ago in factory sizes but If I go with new rears in a 315 or 325 if needed.

Should I go with the factory offset or use something different/more aggressive?


The factory wheels information is listed as:

8.5Jx20 ET51
11Jx20 ET56

http://www.wheel-size.com/size/porsc...-turbo-38-eudm


Thanks for the input guys.
 

Last edited by tommyboy214; Nov 26, 2016 at 02:37 PM.
Old Nov 29, 2016 | 12:17 PM
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Originally Posted by tommyboy214
Guys I could use some help here. I am looking to have a set of forged wheels made for my car. I am looking at 9X20 and the rears at 11X20 right now. Should I be looking at a 12 inch rear wheel instead? If so should I run a 315 or 325? Any issues with the AWD? I just got a set of Michelin SS about 3500 miles ago in factory sizes but If I go with new rears in a 315 or 325 if needed.

Should I go with the factory offset or use something different/more aggressive?


The factory wheels information is listed as:

8.5Jx20 ET51
11Jx20 ET56

http://www.wheel-size.com/size/porsc...-turbo-38-eudm


Thanks for the input guys.

Hey Tommy, I'll be able to help you out with whatever you need.

It's tough to answer your questions since it was presented as a should/shouldn't scenario but going with a wider wheel & tire setup has many advantages. First off the look you get with a more aggressive offset cannot be understated. A proper fitment paired with the correctly styled wheels completely transforms a car. And then obviously with a wider wheel you can use a wider tire which increases grip. We've done the 991 setup dozens of times before. We have ran 21" setups and even 20" setups with a wider track and not a single time was the AWD system affected.

Here are the two 20" setups that we run:

20"x9.5" // 20"x12"
255/35/20 // 305/30/20




20"x9" // 20"x13"
255/35/20 // 335/30/20


 
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Old Nov 29, 2016 | 04:32 PM
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Originally Posted by WheelB

Hey Tommy, I'll be able to help you out with whatever you need.

It's tough to answer your questions since it was presented as a should/shouldn't scenario but going with a wider wheel & tire setup has many advantages. First off the look you get with a more aggressive offset cannot be understated. A proper fitment paired with the correctly styled wheels completely transforms a car. And then obviously with a wider wheel you can use a wider tire which increases grip. We've done the 991 setup dozens of times before. We have ran 21" setups and even 20" setups with a wider track and not a single time was the AWD system affected.

Here are the two 20" setups that we run:

20"x9.5" // 20"x12"
255/35/20 // 305/30/20




20"x9" // 20"x13"
255/35/20 // 335/30/20


Looks niiiiiiice! Are these two in the picture lowered or just have bigger tires with more offset?
 
Old Nov 30, 2016 | 12:53 PM
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Originally Posted by luv2sleep
Looks niiiiiiice! Are these two in the picture lowered or just have bigger tires with more offset?
Both are lowered. Remember that on these AWD cars you cannot deviate from their OEM rolling diameters too much or you risk having the system throwing codes. You can't fill the gap with a taller tire, you have to lower the vehicle.
 
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Old Nov 30, 2016 | 05:09 PM
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Thanks for answering my question
 
Old Dec 5, 2016 | 08:54 AM
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I finally picked a set of new wheels and they arrive tomorrow. I will post a few pictures of them on the car once I get them mounted.

For now here are what they look like on the GT3. I got them in 9x20 and 11.5x20 Platinum Silver. They are the BBS FIR.




 
Old Dec 5, 2016 | 09:29 AM
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Originally Posted by tommyboy214
I finally picked a set of new wheels and they arrive tomorrow. I will post a few pictures of them on the car once I get them mounted.

For now here are what they look like on the GT3. I got them in 9x20 and 11.5x20 Platinum Silver. They are the BBS FIR.





Great choice - I just ordered a set myself.
 
Old Dec 5, 2016 | 10:21 AM
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Originally Posted by Stage7
Great choice - I just ordered a set myself.
Congrats. I almost pulled the tirgger on these but preffered the BBS. http://rennlist.com/forums/parts-mar...s-sensors.html
 
Old Dec 5, 2016 | 07:02 PM
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Do the BBS come in 21's?
 
Old Dec 5, 2016 | 07:17 PM
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Originally Posted by gsc
Do the BBS come in 21's?
They are only listed as 20's not 21's I would call them though.
 



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