Installation Tips: 1) Align the notch in the metal ring with the valve stem cutout and face the cutout (see image) 2) Make sure the metal ring is seated in the top groove at each location (see picture e.g. incorrect installation with one in the bottom groove and one in the top groove)3) The marking on the back says that the bottom groove should be used "for a larger size". target. I'm not sure how to interpret this - does this mean making a 'bigger' hubcap or a 'bigger' wheel. My suggestion is that if you can't fit the cap with the metal ring in the top groove, move the ring to the bottom groove and try again. will not fit Camry 2004 as stated in another Revain listing: http://smile.amazon.com/gp/product/B014EKKTF2?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00).