bearing buddies

People that have them swear by them. I can see the usefullness on trailers with really small wheels or boat trailers where the hub gets submerged. But in reality, there are thousands of trailers that don't have them. And cars put way more miles on their bearings without getting repacked or having bearing failure.

But, hey, they are inexpensive enough. Get a set and put your mind at ease. Just be careful not to overpack the hubs and pop the grease seal.

if you use them right? they work just fine. I only pump grease in till I see the plunger move about a half inch, if you pump it full it puts too much presure on the seals. or pops the bearing buddy off. have them on four trailers .works for me.