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Old Jan 17, 2011 | 08:11 PM
  #1  
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From: va
Default wheel and offset question

I'm trying to calculate some measurements whan changing wheels and offsets. If i have 20x10 wheels with a 45 offset and switching to a 20x11 with 15 offset, would i be correct to say it will push out the wheel away from the car by this amount:

From 10" to 11" is a difference of 1" so it would be 1/2 to the inside of the car and 1/2 to the outside

from a 45 offset to 15 offset is a difference of 30mm which is roughly 1.2" to the ouside

so adding these together it should push the wheel 1.45" out more away from the car compared to the 10"/45 offset. Trying to find out if a 15 offset on a 11" wide wheel would require pulling fenders or just shaving the lip.

Thanks in advance and post pictures if you have any wheel setup close to what i'm trying to fit (20x11 with 15 offset). By the way it will be going on a gs 450h
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Old Jan 17, 2011 | 10:37 PM
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1.7 inch difference, the idea is right, math is wrong.
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Old Jan 17, 2011 | 10:38 PM
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this is magic:

http://www.1010tires.com/wheeloffsetcalculator.asp
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Old Jan 17, 2011 | 11:52 PM
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aww damn!! after all that calculating i added the 2 numbers wrong!! lmao! thanks homie. do u know if i can get away with just cutting the lip of the fender with this setup?

Last edited by montz450; Jan 18, 2011 at 12:06 AM.
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Old Jan 18, 2011 | 04:16 AM
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Www.willtheyfit.com
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Old Jan 31, 2011 | 03:01 PM
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^^^ Awesome link. Thank you very much.


Justin...
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Old Jan 31, 2011 | 08:29 PM
  #7  
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Originally Posted by montz450
I'm trying to calculate some measurements whan changing wheels and offsets. If i have 20x10 wheels with a 45 offset and switching to a 20x11 with 15 offset, would i be correct to say it will push out the wheel away from the car by this amount:

From 10" to 11" is a difference of 1" so it would be 1/2 to the inside of the car and 1/2 to the outside

from a 45 offset to 15 offset is a difference of 30mm which is roughly 1.2" to the ouside

so adding these together it should push the wheel 1.45" out more away from the car compared to the 10"/45 offset. Trying to find out if a 15 offset on a 11" wide wheel would require pulling fenders or just shaving the lip.

Thanks in advance and post pictures if you have any wheel setup close to what i'm trying to fit (20x11 with 15 offset). By the way it will be going on a gs 450h
cool to see another GSh with 20s
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Old Jan 31, 2011 | 09:30 PM
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Gotta pull. My buddy did 10.5 +18 and cut alone didn't do.
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Old Feb 4, 2011 | 03:08 PM
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Originally Posted by Schnitz
nice site. thanks a lot
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Old Feb 5, 2011 | 05:38 PM
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avoid cutting fenders (unless you plan to pull them) they will only cause problems later down the road.
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Old Feb 16, 2011 | 08:01 AM
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hey guys i need your help i been looking around and trying to get help but no answer -.-" i just bought new wheels 19x8.5 +23 and 19x10 +23 im trying to go for that flush look but i dont no which tire size on getting and do you think i would need to get my front fenders rolled? i just have my rear rolled right now on my ISx50 please helpp
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Old Feb 16, 2011 | 11:46 AM
  #12  
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Originally Posted by LilMan23
hey guys i need your help i been looking around and trying to get help but no answer -.-" i just bought new wheels 19x8.5 +23 and 19x10 +23 im trying to go for that flush look but i dont no which tire size on getting and do you think i would need to get my front fenders rolled? i just have my rear rolled right now on my ISx50 please helpp
www.rimtuck.com

And you will most likely need to roll your fenders. Stretch+Camber+Roll is what allows for maximum clearance to avoid rubbing. Basically any car thats flush utilizes those three things.
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