I have a very minor judder/vibration that can be felt through the steering wheel.

Problem has been present since day one but as its very minor did not take much notice as dealership nor indy picked up on the problem. Front upper and lower control arms have been replaced with new tires and alignment done. If one removes hand off steering wheel you can actually see it judder a few degrees.

Does anyone else have this issue and know what the cause could be? Bad tracking, bent rim? Anti roll bar drop links were not replaced but I do not believe this would cause the judder.

This is the only issue to resolve before the car is prefect!

Thanks

 

lots of our cars suffered from it ,wheel imbalance, lower your tire pressure to the lowest which i believe is 35 front and 30 rear. we always thought the tire pressure too high and thats why we experienced this.

 

Strange Bentley never issued any TSB to address this issue to replace the door sticker with updated tire pressures.

Currently run suggested pressures for 19" at 42 front and 35 rear. Will lower to your suggested pressures and report back.

Thanks!

 

Yes I have had this condition and did complain about it at the indy where i bought it. I was told it was cold tires. Well it might be worse in cold conditions but that was not all there was to it. I thought it might be a bad tire since it was an 07 with low miles and they might have developed some cord memory from sitting to long. I wore those out and bought some new P Zero and thought I'd be ok. NOT OK! I wore those out and was thinking about new rims because I always had some rim rash from the original owner on the wheels. This last time I bought some Michelin AS3 and had a good balance done. The tech did say one of the wheels had a slight issue because of the curb rash but was not bad enough to try and fix.

The shudder is gone. Check the tires and wheels and get rid of the Pirelli's when they are worn out. That should be very long because they have no reasonable life span. It almost made me ashamed to let some one drive the car. I mean a car of this cost should ride like melted butter.Good luck.

 

Low pressure (under 40 psi or so) on the Pirelli P Zero causes problems such as the vibration you are talking about. It happens when the car sits for a few days or colder temps is my experience. Am so glad i got rid of those tires! A set of Michelin Pilot Super Sport provide a far better ride, more grip and they do not flatten due to weight. The Michelin PSS are a far superior tire in virtually all respects as compared to the stock P Zero.



FYI: My B dealer said to RAISE the pressure over 40 and that helped quite a bit. Changing to Mich PSS is better

QUESTION: What is the date code on your Pirellis?

 

Steven I expect the Pilot Sport S/3 will ride even nicer than the SS. They may loose a little in the grip/braking department but they are adequate for most of us non track drivers. I have to limited my top speed to 185mph now.

 

DrD, I pray to the God Of Almighty Grip. This is especially true during high G-force twisties, as straight ahead speed gets boring. I'd ride on Hoosier super soft (25) slicks if I could

Hmmm, wonder if the B's suspension bits could handle such immense grip/sideload?

 

Well I thought I was the Hooligan on the club. Beat by you again. Honestly I am driving more moderately these days. I took the B to Fl a while back and enjoyed the quiet smooth ride.

 

Guys, I have the same issue, it starts at about 60 mph and continues all the way to about 100 mph. I also see the steering wheel vibrating if I let it go while driving straight. The weird thing is this vibration does not happen on every single road. I cant find a pattern. Its definitely not the temperature (it happens when outside temperature is anywhere from 30F to 100F). Its not the pressure - I tried several different pressure settings. Its not the wear of the tire either - the vibration was still there after all tires were replaced. Its not the balancing - my tire shop has a top of the line fully computerized Road Force machine. All I know is that the vibration was definitely not there when I initially got the car and I just noticed it one day about a year later.

I have a question for people that run Michelin tires. I was always a fan of Michelins and had them on many of my cars. However, the load index of Pilot Sport A/S 3 is only 1,874 Lbs while OEM Pirellis have an index of 2,039 Lbs. During normal driving 1,874 Lbs is more than enough for a 4,900 Lbs car, but I know the load increases significantly when cornering. I do a few track days a year and Pirellis held up so far (in a sense that they did not blow up).

Do you guys think it's safe to run Michelins?

 

Yes, though it is hard braking that weight shift increases load dramatically to the fronts. Wonder why as3 and not pss?

 

A/S 3 is an all-season tire. Super Sport is a summer-only. I am not 100% sure how long I am going to keep the car, so I don't want to buy a separate set of winter tires for 3-4 snowy days we typically get in NYC.

 

I believe the A/S3 will be a more comfortable road tire and last longer than the SS. I would expect the SS to give a better performance on the track however and of course be summer only so you may have to choose the best compromise for your own criteria. The A/S3 did solve the vibration issue but now I am speed limited to 186mph.

 

I have the same issue. More noticeable over 60mph. Replaced the summer p zero pirellis with Michelin all season 4 tires. Slight vibration is still there

 

I have this issue as well, both on the previous '12 and the current '14. However, my solution was exactly opposite of that listed above. I have the standard P-Zeros set at 36 front and 32 rear (factory recommended pressures) and now I only get the vibe between 60-65 MPH and even then it is very slight and totally random. I believe it is a tire imbalance, but a combination of the two front wheels and it only happens when they sync up and amplify each other. Below 60 I think the variable PS dampens it out. No idea why I never feel it above 70. I certainly spend a lot of time there. In fact, on good stretches of road you can close your eyes and not even tell the car is moving. I don't do that with the Boss in the car anymore.

 

would like to lower the tire pressure to your set pressures but I would be at the shop every month for bent wheels and imbalanced tires driving in the northeast