Ok, driving on highway the other day car starts shuttering when i was slowing down. The last time it happened my pass caliper was stuck. I had it replaced and no problems for almost two years. I figure it’s the other side now. They are the Tundra 199mm calipers. I jack up driver side and it seems ok with a little drag when i spin wheel. Did same with pass side and it’s tough to spin. I check caliper pins and they are very rusty. I cleaned them up to a nice smooth shine and reinstalled with a little grease. Drove on highway and it seems better but not completely fixed. I checked driver side again and it’s got way to much drag. I clean those pins too and reinstall. Something isn’t right as both wheels still will not spin freely. Besides the calipers being frozen what else can cause this. Fluid is just below max level. Don’t want to start buying parts until i know.