AdsGUK Posted September 3, 2015 Report Share Posted September 3, 2015 Especially if alignment seems ok. If gets worse will get you guys to look if you feel its worth it but as long as your happy with current figures of alignment. I dont trust factory alignments unfortunately. The car is pretty much new so doubt there is anything mechanical to worry over either. Quote Link to comment Share on other sites More sharing options...
Tony Posted September 4, 2015 Report Share Posted September 4, 2015 Well we measure way more than is shown on your report so a "full" chassis image would be nice for peace of mind. Quote Link to comment Share on other sites More sharing options...
Rich Posted September 4, 2015 Report Share Posted September 4, 2015 I took a relatives Fiesta to WIM a few years ago cos it was pulling really badly, I was certain it needed a geo but it was actually more or less perfect once it got onto the ramp! The car actually had 4 different branded tyres all with varying tread depth and it was these that caused the horrible handling. Ever since then I always make sure that each axle has the same tyre on it and with the same or very similar amount of tread. Until then I never really believed tyres could cause so many problems with the handling. Quote Link to comment Share on other sites More sharing options...
AdsGUK Posted September 4, 2015 Report Share Posted September 4, 2015 Mine has 4 tyres but different wear on all 4. Ones brand new, which would explain a lot. I guess some cars are also tyre sensitive. The ST has very direct steering so any difference is felt straight away Quote Link to comment Share on other sites More sharing options...
Tony Posted September 4, 2015 Report Share Posted September 4, 2015 The profile also plays a big part but proof or denial tyres are an issue is a simple cost free test of moving them. Quote Link to comment Share on other sites More sharing options...
AdsGUK Posted September 5, 2015 Report Share Posted September 5, 2015 Mine very low profile! Id image if they are directional tyres, then the best option would be to move from front to rear or visa versa Quote Link to comment Share on other sites More sharing options...
Tony Posted September 5, 2015 Report Share Posted September 5, 2015 Yes or side-to-side on a dry day for testing only. Quote Link to comment Share on other sites More sharing options...
AdsGUK Posted September 28, 2015 Report Share Posted September 28, 2015 Sorry to hijack this thread again but just wanted to share an observation. Other commitments havent allowed me the time to switch the tyres around but I did notice recently that when I filled up the car with a tank of petrol that the original symptoms like the OP posted were greatly reduced. I also noticed that the characteristics vary greatly depending on what roads are driven on. eg much less pull on narrow country roads. I also noticed that when the weather is colder its much more obvious too, still leading me to believe its tyres too but unsure if it hints towards anything else that needs adjusting. Quote Link to comment Share on other sites More sharing options...
Tony Posted September 28, 2015 Report Share Posted September 28, 2015 No not at the moment.... Each variable you said points at the tyres. Quote Link to comment Share on other sites More sharing options...
AdsGUK Posted September 28, 2015 Report Share Posted September 28, 2015 Thanks Tony, when things permit I will switch the tyres and see how it goes.Interesting reading further into how some tyres are constructed and cause pulling problems, ive heard even poor fitment can cause this too.... Quote Link to comment Share on other sites More sharing options...
Tony Posted September 29, 2015 Report Share Posted September 29, 2015 Most domestic problems with handling/ pulling is the tyres...... Don't forget everything funnels it's way down to the tyres little contact patch so if that's distorted we have problems. Quote Link to comment Share on other sites More sharing options...
BrownST Posted November 8, 2016 Report Share Posted November 8, 2016 I know this is a year late and you may possibly not have the car anymore but I thought I'd post my experience here for anybody in the future that may have this problem and it took me a while to put my finger on it. I have a MY14 Fiesta ST which drove fine from new then on my way to work one day a van collided with the LHS on a roundabout and I caught the RF wheel on the kerb on the roundabout. So the car was repaired and all sorted and I asked for an alignment check and all came back fine, the garage adjusted the toe slightly to bring it back in line and called it done. I drove it for a while and I was convinced something was wrong but on paper all was fine. It would drive as the OP described, it would turn in one direction as it should but it just didn't feel right in the other direction. After being frustrated with it for a while I loosened both lower arm mounting bolts and tightened them back up and this solved the problem. I suspect that the impact was enough to move the lower arm on it's rear mounting as it's slotted affecting the suspension movement in ways I cannot explain haha Quote Link to comment Share on other sites More sharing options...
Tony Posted November 8, 2016 Report Share Posted November 8, 2016 Reads like the wishbone bolts where tightened with the wheels off the ground. A geometry reading the os castor or the set-back or the wheel base would have shown this. Quote Link to comment Share on other sites More sharing options...
BrownST Posted November 8, 2016 Report Share Posted November 8, 2016 I didn't even think about having the wheelbase measured at the time but yes that would have proven the point. From memory the only outliar on the alignment sheet was the tracking but who knows if the other readings were'tweaked' as I got frustrated with it and went at it with the tools before getting my own alignments results. I should say that the actual reason I'd undone the wishbone in truth is because I initially suspected the loading of the impact had damaged the wheel bearing so what I actually did was remove the arm and the hub at the same time so I could inspect everything. Although the bearing did seem smooth and free and rotated without any sticking points in it's operation I still replaced it as I'd bought one so it may have well been the problem but I felt like the two bearings felt the same by hand but under operating conditions I guess there very well could have been a difference. Still, all is well now. Quote Link to comment Share on other sites More sharing options...
Tony Posted November 8, 2016 Report Share Posted November 8, 2016 That is the main thing. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.