Jack up the car, grease the bearings every couple months. Should be fine.
I use to do this to my car, but after awhile of driving around on Michigan streets, they will need to be replaced.
I posted a while ago about replacement bearings from McMaster-Carr. The bearings are the same size, shape and type as the GC bearings, BUT they are rated for much higher loads. Now I have had theses bearings on my car since X-Mas time, and have driven around about 40% of the time SLAMMED... on Michigan roads. I checked the bearings last weekend, NO PROBLEMS.
Of course though when I told everyone about these bearings, I was given the usual CEG slam, because they weren't over-engineered. Well maybe theses same members who slammed me are now questioning themselves.
In any case, the bearings i found will cost you about 10$ including shipping for both fronts, and this includes everything you need.
I also posted the same info about a year ago. I think this is where some of the Canadian guys made their money. :rolleyes: