honestly chrome rims are a total pain, no matter who makes them. i have seen many-many, almost all - chrome rims turn into the pictures above; it just depends when. better quality will last longer; but the end is inevitable. even my brother in law's oem lexus has that issue. you have to wash & wax them CONSTANTLY, and even then.... you can chip off the paint just from the rims shrinking & expanding.
if i was to go chrome, i would certainly stay with OEM rims. actually... i wouldn't buy after market wheels regardless of color/style, unless they were $1 each. if in a year, one rim is damaged, cracked, or simply beyond repair = good luck finding that 1 rim you need to complete the set. while oem rims seem to never disappear from the market.
try these:
http://www.ebay.com/itm/18-NISSAN-MAXIM ... 17&vxp=mtr