It started to happen few weeks ago...The sterlingwheel does not shake/vibrate that much but I can feel it it's shaking/vibrating/jerking...(Not too sure how to explain exactly)
This ONLY occurs when going between 40-60km/h at low RPM. (1.5 or 2) I thought it was the rotors and the tire issue but i guess not since i changed the rotors, pads, and tires few days ago.
Should I get the alignment done? any suggestions??

 

Did you get the new tires balanced? If so then this could be a bent rim issue.

 

which gear?

 

Yes, I got new tires so it's all balanced...and non of my rims are bent...

And. I didn't really check which gear, but i think 3rd... I will double check on that..

 

Just because you have new tires doesnt mean its balanced Did it do the exact same thing before the new tires? If not try to Rotate the rear tires to the front to see if it goes way.

 

 

when I got new tires, it was balanced and installed. I went to the shop to change my tires. And yes, it did exact same thing before new tires.