I'm looking to pick up a used rim at the junk yard, in case they don't have any Vibe/Matrix wheels available
which other makes and/or models can I use as a reference?
Scroll down through the list. The smallest diameter you can mount is 15". Make sure the center hole diameter is correct and stay close to the original off-set.
Best bets: Toyota Matrix, Pontiac Vibe with 1.8 L engine and Toyota Corolla. and a good number of Chrysler/Dodge cars.
Vibrologist
'05 Vibe
"It is important to know the difference between 'accurate' and 'precise' even if you are neither!"