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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wheels and Tires Forum Sponsored by The Tire Rack > want to switch to 5x114.3, 17x9 or 18x9 square



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      06-12-2018, 11:50 AM   #1
aaddam2
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want to switch to 5x114.3, 17x9 or 18x9 square

So I want to switch to a 5x114.3 lug pattern using the 15mm adapter plates.

I am currently running 17x9 ET30 square set up. would like to keep that size but may switch to 18x9 to possibly open up more wheel options.

would i just need to go like ET45 ish on offset? would i run into any fitment issues?

anyone have any experience with this set up and wheel option ideas? thinking of getting Advan RS

BTW i daily and track my car, i would use the wheels primarily as a track wheel x tire combo.

Last edited by aaddam2; 06-12-2018 at 12:09 PM.
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      06-12-2018, 12:24 PM   #2
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not exactly what you were looking for but I'm running 18x8.5 ET30 Square with no issues on harsh roads.
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      06-12-2018, 12:54 PM   #3
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not exactly what you were looking for but I'm running 18x8.5 ET30 Square with no issues on harsh roads.
with the 114.3 adapter?
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      06-12-2018, 01:27 PM   #4
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with the 114.3 adapter?
ahhh nevermind. carry on
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      06-23-2018, 11:55 PM   #5
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Why do you want to do this? I'm assuming wheel choices? Also wheel hub adapters aren't the best idea for a track car...and I believe some tracks won't even let you run them, i.e. you'll fail tech inspection.
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      06-26-2018, 10:02 PM   #6
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Why do you want to do this? I'm assuming wheel choices? Also wheel hub adapters aren't the best idea for a track car...and I believe some tracks won't even let you run them, i.e. you'll fail tech inspection.
yes wheel options since I am going for Advan or a Volk set of wheels, but also it wont be like I am pushing my wheel out more than my current set up, also since it is an adapter it is a bolt on time.

so if im running 18x9 +30 now, and i then if run a 18x9 +45 with a 15mm adapter the wheel & contact patch would be in the same location. Porsche even sells 17mm OEM spacers. also the adapter i would use would be hub centric as well. not going EBAY with this kit. I do not see how this could cause any accelerated wheel bearing wear if the wheel is the same distance from the hub.
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      06-27-2018, 11:47 AM   #7
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I understand your thought process, but since you'll be a tracking this, I'd check with whatever sanctioning body you plan on racing with as far as what their rule book says about spacers.
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