So not too long ago i bought a g35x sedan 07 and it rides smooth and everything. I have about 142k miles in it and just recently the car starts to jump like I’m on a really bumpy road. It almost feels like it’s jumping on its own, but it’s not from the front, mostly feels like it’s coming from the rear end of the car. And after a drive when i get out my car it smells like the brakes are almost burnt but the brakes are still good and i can almost hear a small clicking noise in the brake. I only noticed this in the back left wheel (keep in mind i changed all my tires besides the rear left) i would take it to a mechanic but I’m always at work. So I’m trying to figure out the exact problem hoping someone in here can help, thanks!

 

If you can smell it then it's burning, good chance you have a sticking brake caliper. Typically this happens when people don't grease the slide pins when they do a brake job.

Jack up the rear, spin the tires by hand, see if one side is dragging. If it IS then remove the caliper and grease the slide pins and reassemble, the problem will probably be fixed. However, you probably warped the rotor already if it is dragging and thus the "bumpy road" feeling.