I have some OEM 2011 Impreza STI wheels on my Hawk, but they came without centre caps.
2011 STi Enkei
Bolt pattern: 5x114.3
Wheel Weight: 23.55 lbs (thanks to NASIOC member nashelton)
OEM-equipped tire size: 245/40R18
Notes: This wheel was also offered on the 2010 STI Special Edition, in a darker color.
I bought some 59mm ones from eBay for £12 hoping they would fit, here
They are very, very loose and dont appear to clip in properly. I've left them on but imagine as soon as I hit a bump they will come off. Any suggestions? Go bigger to 60mm or more, or is it because they are too large and should go further in? Alternatively do you think they fit poor as they are Chinese, non-oem ones? I've contacted Subaru parts desk and they dont know the size of their OEM caps, I've even cheekily approached folk on ebay selling the same wheels asking them to measure theirs for me - no response.
Bloody things will cost me a fortune by the time I find the right fit through trial and error