So i went wheeling this past weekend. Nothing to extreme, just mud and some trails. On the ride home i noticed a vibration in the peddles and floor boards. Driver side only. It gets worse when i coast down hills. Also there is a burning smell coming from the front. Trans shifts fine, acceleration is great. There is also a grinding sound coming from behind the engine. I am really worried so if anyone could help me out to what this might be, that would be great. Thanks!