April 21, 2013
Tired of rubber valve-stems tearing, but not wanting the often ugly metal stems, I chose this kit when I ordered some new rims. Fit perfectly, no leaks, and the stemless-caps work great. Comes with an extra set of caps, in case you lose one, which is very awesome. Wish it came with an extra valve-stem piece (you only get the one) but can't complain.
Though most people already keep some form of tools in their 'Stang at all times, you do need a wide flat-tipped tool to work the covers. The valve-stem can be added and removed (during pressure checks and filling) by hand without problems (doesn't require you to wrench it on to get a good seal).
Two cons, one aesthetic and one functional.
Aesthetically it'd be nice if AM offered the black version of this kit as well. My rims are black and I'm going to paint the caps with a black enamel so they don't don't stick out visually. The caps are also a bit soft, so be careful with whatever tool you use to work them.
Functionally the valves themselves, and the caps, are awesome. The valve-stem piece, though, is a bit quirky. It's essentially a threaded tube with a captured pin inside it, which your tire pressure tool or filler pushes on, which in turn pushes on the actual valve pin. The problem is that if the stem is attached while the valve is in a high position, the stem will be angled downwards, and this causes the captured pin to slide out a little. It won't fall out, but you kinda have to hold it in before you get your tool on, else the pin won't push the valve. Very touchy and the tolerances are a bit too thin. Just getting a reading can be an exercise in trial-and-error. Fortunately a good nitrogen fill means far-fewer fills.