i'd reccomend tirerack.com or tires.com for online, icbmotorsport.com has some decent used JDM wheeels, or even
www.motors.ebay.com (ebay for cars). I'm from southern CA so i can only recomend online shops. hope it helps. If your concerned with weight at all forged rims are lighter and stronger but, much more expensive(my 15" racing hart cp-035 used were 1000, but they weigh only 9 lbs each!) cast are much cheaper but heavier (for 17s my old ones (Motegi mr12s were almost 45 lbs with tires).