Discussion
First of all, Happy new year to all of you! I wish you many loud and safe miles in 2013 
Perhaps you guys can help me with a vibration issue in my T350t. I replaced my two rear tyres with GoodYear Eagle F1 Asymetric 2 tyres, and from that moment I notice a slight vibration when over 75 mph or so. It is not a constant vibration which would occur with every turen of the wheel. If I try to describe it, I would say it is about 0,7 second of no vibration, and then in the next about 0,7 second i feel 4 or 5 very slight and quick vibrations. Next 0,7 second no vabrations again, and so forth.
As mentioned I only start to feel it about 75 mph or so, I think the vibrations frquency (not the magnitude) increases proportionally with speed, but I is hard to test since the liveliness of the car at high speeds makes it hard to feel a vibration so slight.
I tried taking my foot of the throttle and clutching to see if it was rev related, but it was not. Engine revs do not influence this vibration.
I went back to the tyre specialist, had everything rebalanced (including my older front tyres) but it has not gone away. At first I thought it was less, but perhaps only slightly and I am even unsure of that.
The specialist is very friendly and is willing to replace my tyres with another set to see if it is perhaps a manufacturing issue. But before he does that I would like to check if it is perhaps something else.
A broken enigine mount would cause the vibration to chance with revs, wouldnt it? Some bearing wearing out perhaps? Perhaps I only felt it not because there is much more feeling in these new tyres than in my old (hard) Potenzas?
Your help is appreciated!
Perhaps you guys can help me with a vibration issue in my T350t. I replaced my two rear tyres with GoodYear Eagle F1 Asymetric 2 tyres, and from that moment I notice a slight vibration when over 75 mph or so. It is not a constant vibration which would occur with every turen of the wheel. If I try to describe it, I would say it is about 0,7 second of no vibration, and then in the next about 0,7 second i feel 4 or 5 very slight and quick vibrations. Next 0,7 second no vabrations again, and so forth.
As mentioned I only start to feel it about 75 mph or so, I think the vibrations frquency (not the magnitude) increases proportionally with speed, but I is hard to test since the liveliness of the car at high speeds makes it hard to feel a vibration so slight.
I tried taking my foot of the throttle and clutching to see if it was rev related, but it was not. Engine revs do not influence this vibration.
I went back to the tyre specialist, had everything rebalanced (including my older front tyres) but it has not gone away. At first I thought it was less, but perhaps only slightly and I am even unsure of that.
The specialist is very friendly and is willing to replace my tyres with another set to see if it is perhaps a manufacturing issue. But before he does that I would like to check if it is perhaps something else.
A broken enigine mount would cause the vibration to chance with revs, wouldnt it? Some bearing wearing out perhaps? Perhaps I only felt it not because there is much more feeling in these new tyres than in my old (hard) Potenzas?
Your help is appreciated!
Are you sure that the vibration started when the tyres were changed? If so then it must be related. Otherwise it could be many things - engine/gearbox mountings, propshaft bushes (are there any on these cars? I remember the old MK1 Ford Escort I had with a worn central prop bush, that was fun to ride in!).
I am having the same problem , i asked power to look at it a few weeks ago at service and they tell me its rear wheel rims . They have tried to balance out the vibration but its just different , worse if anything . I would think it possible that the rears just aren't as well balanced as before , ask them to have another go before you do anything drastic.
Dale
Dale
Thanks for the replies. I am pretty sure it started with the tyre change. But I dont want to exclude that perhaps they lifted the car improperly and put too much stress in one of the engine mounts or something like that. But something with the rear rims is definitely most likely. Especially now with mycrofts experience with something similar. I just though that after a second time of taking the wheels off and rebalancing they would have done the job properly. But I will go again and tell then to take the tyres from the rims as well ans start from scratch.
I've had something similar, tried the car with different rear wheels and tyres, got the propshaft rebalanced, diff rebuilt, new rear shocks, checked balance of driveshafts. Think it's more than one cause so trying with new rear tyres after all this lot in case the others had suffered.
Only thing left is bushes and CV joints
Only thing left is bushes and CV joints
Graaf said:
ask Erwin to check the rims for you : he detected one of my wheels was bent as well after the "normal" tyre man did not notice it
It was this. Went to Erwin as well. Great guy, very knowledgeable. One of the rear rims was slightly bent. Don't know why I did not feel anything with my old tyres (Potenzas) but anyway with the rim replaced it is gone now.Gassing Station | Tamora, T350 & Sagaris | Top of Page | What's New | My Stuff