The best replacement for 16 is 17 inch wheels.

The best alternatives to 16 are rated as following:
★★★★★  17 inch wheels
★★★★  32gb iphone
★★★  32gb ipad
★★★  32 ipad
★★★  18 gauge sink
★★★  32 iphone
★★★  17 wheels
★★★  32 gb ipad
★★★  32 gb iphone
★★  18 inch necklace
★★  32 gb ram
★★  32
★★  18 gauge speaker wire
★★  18 barrel
★★  24 bit
★  24 bit audio
★  18 gauge
★  17 inch tires
★  32gb ram
★  17
★  32 ipad mini
★  cell
★  32 gig ipad
★  18 inch chain
★  32 gig iphone
  fat 32
  sas 70
  20 ar 15
  8gb ram
  18 necklace
  12 24
  20
  32 gig
  ak 47
  20 ar
  3 8
  32 bit color
  20 folding bike
  mig 35
  16mm
  16w
  18 ar barrel
  20 inch barrel
  merv 10
  14.5 pinned
  18 wheels
  sigma 10 20
  8 iphone
  f-18
  m1a
  socom ii
  8 gig iphone
  canon 10 22
  socom 2
  20 barrel
  f 18
  32 mb cache
  1 seed
  mini 14
  32 gb
  265 75 16
  mig 29
  16w size
  32mb cache
  14 megapixels
  20 ar15
  pci express
  acr

Your alternative for 16 is not listed? Suggest!
Speaking about 16, one probably shouldn't forget about wrinkles.

Other search terms related to 16 and their ratings are:
★★★★★ wrinkles
★★ cellulite
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16
17 inch wheels
32gb iphone