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Old 01-11-2016, 03:26 PM   #1
Scooby Newbie
Member#: 383867
Join Date: Mar 2014
Location: Denver, CO
2013 WRX

Default 18x8 on a GR chassis?

Hi, I'm fairly new to aftermarket rims and would really appreciate your advice! I am looking at a set of 18x8 RPF1's for my 2013 WRX hatch. The stock wheels are 17x8 and the STi comes with 18x8.5. So I am wondering, is there any negative effects to using an 18x8 rim on the chassis when an 18x8.5 is the stock size?

Thanks for your help!
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Old 01-11-2016, 11:17 PM   #2
Patrick Olsen
NASIOC Supporter
Member#: 120
Join Date: Jul 1999
Chapter/Region: AKIC
Location: Where the Navy sends me...
1997 Legacy 2.5GT
QuickSilver Metallic


Probably the only negative effect, if you can call it that, is that your tire width selection would be a little more limited with 8" wheel vs 8.5". If you're fine sticking with 235 or 245 section width tires (same as your stock 17s or 10mm wider) then it's nothing to worry about.
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Old 01-13-2016, 10:27 AM   #3
Scooby Newbie
Member#: 348275
Join Date: Feb 2013
Chapter/Region: Tri-State
Location: Schuylkill County, PA
2012 Impreza WRX Sdn
WR Blue


It's all important to educate yourself on wheel offset and how changing that along with the wheel width may affect your suspension geometry and potential clearance issues.
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