[jxz01]

Hi folks I just got the car not long ago and I am still new to bmws. So I tried a full throttle hard acceleration today in sport plus on a wet road (raining), and the moment when I floored the gas pedal (torque and hp at max), I felt the rear wheels kinda shuddered a little. My car mechanical knowledge is limited so I don’t know what happened there. Was that traction control kicking in or what? I have all four ps4s.

Any advice is appreciated

[noname]

Did you have traction control/DSC on? Either way, just sounds like wheel spin

[Dan B]

I get this when traction control kicks in.

If you are getting a shuddering, like the car is hesitating, under hard acceleration it is likely traction control. I am not sure where it displays in iDrive 7x, but you should see a traction control warning in the dash display. You can test this by making a run where it shudders, and then turn off traction control and try again. It you get wheelspin it was traction control.

[aidanmurphy]

Just wheelspin if it's wet, more throttle and you will have less shudder. I thyink the shuddering is the tires finding small pieces of traction while spinning so give them enough torque to keep moving!

[jxz01]

Originally Posted by noname

Did you have traction control/DSC on? Either way, just sounds like wheel spin

Ye, I didn’t touch the disc button, only in sports plus mode. My friend told me it is the traction control activated to limit wheel spin

[jxz01]

Originally Posted by Dan B

I get this when traction control kicks in.

If you are getting a shuddering, like the car is hesitating, under hard acceleration it is likely traction control. I am not sure where it displays in iDrive 7x, but you should see a traction control warning in the dash display. You can test this by making a run where it shudders, and then turn off traction control and try again. It you get wheelspin it was traction control.

Thanks, I think it is traction control kicking in too

[jxz01]

Originally Posted by aidanmurphy

Just wheelspin if it's wet, more throttle and you will have less shudder. I thyink the shuddering is the tires finding small pieces of traction while spinning so give them enough torque to keep moving!

Would wheelspin cause shudder? Just curious

[Bigslick2332]

If you're RWD like me it's wheel hop. I also get it on wet roads under heavy acceleration. In dry conditions I've never had a problem.

[jxz01]

Originally Posted by Bigslick2332

If you're RWD like me it's wheel hop. I also get it on wet roads under heavy acceleration. In dry conditions I've never had a problem.

Mine is rwd too. I have tried it on dry roads but I don’t think I experienced them so you are likely right. Is it normal

[Dan B]

Originally Posted by jxz01

Would wheelspin cause shudder? Just curious

What you are feeling is wheel hop. The wheel loses traction then gains traction and it causes the wheel to not only bounce but it will move backward and then forward as traction varies. Even a slight amount is noticeable.

Originally Posted by Bigslick2332

If you're RWD like me it's wheel hop. I also get it on wet roads under heavy acceleration. In dry conditions I've never had a problem.

I get it with xDrive as well.

[Bigslick2332]

I bought my car with 19k miles on it and it has always done it so I assume it's normal for us that are rwd. It only happens when I accelerate enough to purposely try to break traction on wet roads. In dry conditions (before and after a bm3 stage 2 tune) I've never had even the slightest bit of wheel hop.

[Bigslick2332]

I get it with xDrive as well.[/QUOTE]


Nice to hear that it's not only us with rwd. Do you only experience it in wet conditions?

[jxz01]

Originally Posted by Bigslick2332

I bought my car with 19k miles on it and it has always done it so I assume it's normal for us that are rwd. It only happens when I accelerate enough to purposely try to break traction on wet roads. In dry conditions (before and after a bm3 stage 2 tune) I've never had even the slightest bit of wheel hop.

I can’t wait to try it and see but it’s been raining and wet for weeks in Davis. The wheel hop is new to me because I came from a Lexus that does not have much hp and torque. Even if I floored it in sports mode, I can’t even slide and play with it a little. I am assuming the wheel hop that we are experiencing tend to be more common in performance cars?

[Dan B]

Originally Posted by Bigslick2332

I get it with xDrive as well.

Nice to hear that it's not only us with rwd. Do you only experience it in wet conditions?[/QUOTE]

Anytime I get wheel spin. In the wet or snow I turn off DSC. It steps in way too early and too hard.

As much as I love the car, on dry pavement wheel spin is not an issue.