[Alvin Mpower]

I had this weird feeling this morning when I was driving on the highway, whenever my car is cruising around 70-80 the car feel like its vibrating or shaking for some reason, if I get on the gas it accelerates smoothly and after I let go of gas it starts to vibrating again. I tried to drive in different mode and seems like comfort mode was doing the most vibrating, ECO PRO was fine and Sport was also good. Is my body being too sensitive this morning or is this normal?

[njdangelo]

Not trying to be 'that guy' but those sound like symptoms of unbalanced tires. Are you sure it's not just that?

[Alvin Mpower]

Originally Posted by njdangelo

Not trying to be 'that guy' but those sound like symptoms of unbalanced tires. Are you sure it's not just that?

After some research it sounds like it could be unbalanced tire, I might need to drive after work again to feel again. The only reason it's concerning because I do feel like the ride was extra harsh this morning with the bouncy and vibrating when not on the throttle. The throttle is smooth and power is there so I don't think its the spark plug.

[frenchi]

Will follow,as i got the exact same and tyre balance did not help at all…it’s weird as it happens once or twice every few days only on highway speeds,never in town.Could be a steering rack motor fault but there is no any errors on ista

[Psi5]

May be a bent or damaged wheel that vibrates at certain speeds. If you feel it in the steering wheel, it is likely the front. If you feel it in your seat, probably the rear.

[Alvin Mpower]

Originally Posted by Psi5

May be a bent or damaged wheel that vibrates at certain speeds. If you feel it in the steering wheel, it is likely the front. If you feel it in your seat, probably the rear.

yeah i feel it on the seat.
I just drove home from work and same thing, everything is smooth until 75 above, excessive vibrating but its fine on throttle. I can feel the front tire, feel like something is dragging it, and this time switching between modes didn't help, I don't think that caused any issue. I will bring my car in the dealer next week and they can let me know, 10 days till my factory warranty expires lol. Still got that CPO though.

[cfm56d7b]

Originally Posted by horrizenashisland

yeah i feel it on the seat.
I just drove home from work and same thing, everything is smooth until 75 above, excessive vibrating but its fine on throttle. I can feel the front tire, feel like something is dragging it, and this time switching between modes didn't help, I don't think that caused any issue. I will bring my car in the dealer next week and they can let me know, 10 days till my factory warranty expires lol. Still got that CPO though.

With 10 days remaining on factory warranty, it's helpful to document all the little things which require attention.

[njdangelo]

Originally Posted by frenchi

Will follow,as i got the exact same and tyre balance did not help at all…it's weird as it happens once or twice every few days only on highway speeds,never in town.Could be a steering rack motor fault but there is no any errors on ista

Pay attention to whether it happens in the same spot. This happens to me in the same spots around town too. I think when the road section was paved maybe they were driving the paving machine too fast or too slow or something which created a rhythmic and consistent ripple during the paving process. There's a 5 mile stretch of highway that was just paved about 8 years ago that does it too my car. As soon as I increase my speed by 5-10mph it goes away and then as soon as the newly paved area comes to end it goes away as well

[dmaxdmax]

I was 'feeling' guibo/giubo/flex disk coupling from your symptoms originally, but the fact that mode shifting changed it, made me think it was something else.

If it's not the road, and you say now it's in all modes, consider having a peek at your flex disk.