Ford Ranger / B-Series :: 1994 - Slow Leaks And Vibrations From Multiple Wheels

'94 Ranger with aluminum wheels.

I have problems with slow leaks and vibrations from multiple wheels. Both problems have persisted through multiple tire changes over the years. The same shop has always done the tire changes and they tell me they've been balancing the wheels and cleaning the inner rims. The vibration went away after putting on my B2 wheels. Then swapping the rears back to the ranger wheels, 2 at a time, the vibration was back for both test drives (hence vibrations from multiple wheels).

The wheels are badly corroded at the rims and valve stems which leads me to believe it's the wheels themselves that are causing the leaks. I haven't heard of excessively old wheels causing vibrations though which is why I ask. I will likely be buying some craigslist or junkyard replacement wheels but wanted to "check in" first.