Tyre slips on full lock- 01 Fiesta

EternalHope

My sister's 01 Fiesta passed NCT a couple weeks ago. Now when doing full lock to the right the right tyre appears to 'slip.' Hard to explain. Like http://www.volvoforums.org.uk/showthread.php?t=168576 except this is Ford

It was happening just before NCT. Nothing like cv joints etc needed replacing at NCT.In fact it passed all tests. The tyres are not new but they passed the NCT. It does not happen all the time. It happens mostly where she lives. She has to turn in a tight area and the road is tarmac but very smooth

Lellostag

Could it possibly be a camber or caster issue? Might be worth having the wheel angles checked at a garage. Do the front tyres wear unevenly?

EternalHope

Lellostag wrote: »

Could it possibly be a camber or caster issue? Might be worth having the wheel angles checked at a garage. Do the front tyres wear unevenly?

Thanks
Wouldn't the nct have found that? I will look at the tyres when i see her tomorrow

porsche boy

Sounds like wheel alignment. Could have happened after the nct, pothole or kurb may have caused it.

EternalHope

porsche boy wrote: »

Sounds like wheel alignment. Could have happened after the nct, pothole or kurb may have caused it.

it was happening before the nct. they would have seen it? Is that expensive if it is that?

porsche boy

EternalHope wrote:

it was happening before the nct. they would have seen it? Is that expensive if it is that?

On the top of the nct sheet, sideslip test, what was the reading for the front wheels? It can be fairly out and still pass the nct. Wheel alignment should be 40-50 euro

EternalHope

porsche boy wrote: »

On the top of the nct sheet, sideslip test, what was the reading for the front wheels? It can be fairly out and still pass the nct. Wheel alignment should be 40-50 euro

Thanks. I will check tomorrow. i drove the car today and it seemed ok today but then i am not a mechanic

EDIT. I texted her. The side slip front axle -1.0 m/km. What does that mean? The last part meter/kilometer?

Lellostag

EternalHope wrote: »

Thanks. I will check tomorrow. i drove the car today and it seemed ok today but then i am not a mechanic

EDIT. I texted her. The side slip front axle -1.0 m/km. What does that mean? The last part meter/kilometer?

Well that certainly doesn't sound bad at all, the NCT limit seem to be +-14 m/km so that by all accounts is unlikely to be the issue. I'm no mechanic so can't say for sure what exactly it means, but I guess it's to do with how many metres out of line the wheel travels over the space of a kilometre. It would probably be due to toe-in or toe-out, but someone else on here might be able to confirm.

Anyway I think the first port of call would be to have all the wheel angles checked professionally, they might also be able to more specifically advice why the car behaves like it is.

Good luck!

Tea drinker

My passat had this, much better after a good wheel alignment.
When I say wheel alignment I mean all new suspension arms and new tyres and then an alignment ;-)
But yeah it was only sorted when I got the alignment.
In the wet there was mental scrupping and judder on those painted car parks like dundrum

EternalHope

Tea drinker wrote: »

My passat had this, much better after a good wheel alignment.
When I say wheel alignment I mean all new suspension arms and new tyres and then an alignment ;-)
But yeah it was only sorted when I got the alignment.
In the wet there was mental scrupping and judder on those painted car parks like dundrum

well the tryes and everything passed the nct so the wheels cannot be out of alignment.it only seems to happens where she lives when it is wet,the tarmac is very smooth

Lellostag

EternalHope wrote: »

well the tryes and everything passed the nct so the wheels cannot be out of alignment.it only seems to happens where she lives when it is wet,the tarmac is very smooth

Passing the NCT only means it's safe to drive, doesn't necessarily mean all is as good as it should be. Then again, it could of course be that its just a particularly slippery stretch of tarmac which causes the problem.

As for the tyres, are they a decent brand that should give good grip, or are they old and hard Chinese ones?

EternalHope

Lellostag wrote: »

Passing the NCT only means it's safe to drive, doesn't necessarily mean all is as good as it should be. Then again, it could of course be that its just a particularly slippery stretch of tarmac which causes the problem.

As for the tyres, are they a decent brand that should give good grip, or are they old and hard Chinese ones?

i don't the brand there is plenty thread on them though

Lellostag

EternalHope wrote: »

i don't the brand there is plenty thread on them though

If they are cheap Triangles or some similar budget tyre they could be lethal in slippery circumstances, good thread depth won't make a difference if the tyre itself is rock hard.

Hopefully that's not the case here though.

EternalHope

Lellostag wrote: »

If they are cheap Triangles or some similar budget tyre they could be lethal in slippery circumstances, good thread depth won't make a difference if the tyre itself is rock hard.

Hopefully that's not the case here though.

how could i tell? must be reasonably safe when nct passed them

Lellostag

EternalHope wrote: »

how could i tell? must be reasonably safe when nct passed them

Well you could just read what it says on the tyre, surely? There are a few tyre brands and models that are absolutely lethal due to them being way too hard and offer no grip whatsoever in the wet. I can't remember which ones right now, but try and do a search on here and perhaps you can find something out.

In other words, check what tyres are currently on the car and Google that brand and model to see what reviews you can find on that particular tyre. However, if its a major brand they're probably fine.

As for the NCT they only check for thread depth and age, they make no assessment at all about the quality of the tyre in regards to performance in various situations, eg wet tarmac.

EternalHope

Lellostag wrote: »

Well you could just read what it says on the tyre, surely? There are a few tyre brands and models that are absolutely lethal due to them being way too hard and offer no grip whatsoever in the wet. I can't remember which ones right now, but try and do a search on here and perhaps you can find something out.

In other words, check what tyres are currently on the car and Google that brand and model to see what reviews you can find on that particular tyre. However, if its a major brand they're probably fine.

As for the NCT they only check for thread depth and age, they make no assessment at all about the quality of the tyre in regards to performance in various situations, eg wet tarmac.

ok thanks

Lellostag

EternalHope wrote: »

ok thanks

Hopefully you'll eventually find out what's really causing this problem, sounds a little annoying at the very least.

Good luck!

EternalHope

Lellostag wrote: »

Hopefully you'll eventually find out what's really causing this problem, sounds a little annoying at the very least.

Good luck!

one is firestone and the other is kingstar. kingstar got a bad rap here

Thanks for the help:)

Lellostag

EternalHope wrote: »

one is firestone and the other is kingstar. kingstar got a bad rap here

Thanks for the help:)

Brilliant, sounds like you most probably have found the problem! :cool:

The best plan of action would be to eventually swap both front tyres for two good ones of the same brand and model, as having different thread patterns on the same axle is not recommended. When that's done I would hope the tyre slip problem will vanish, and the car will also be less likely to understeer through roundabouts in the wet (ie go straight-on instead of actually turning).

Take care!

EternalHope

Lellostag wrote: »

Brilliant, sounds like you most probably have found the problem! :cool:

The best plan of action would be to eventually swap both front tyres for two good ones of the same brand and model, as having different thread patterns on the same axle is not recommended. When that's done I would hope the tyre slip problem will vanish, and the car will also be less likely to understeer through roundabouts in the wet (ie go straight-on instead of actually turning).

Take care!

what is a good brand and how much would two be?

Lellostag

EternalHope wrote: »

what is a good brand and how much would two be?

Hi,

Very good question. As for what would generally be considered good tires which tend to perform well in independent tests would be brands like Bridgestone, Goodyear, Continental, Nokian, Firestone, Michelin, Uniroyal, Vredestein, Yokohama to name a few. Prices vary quite a lot, have a look for example here: http://www.eiretyres.com/ and hopefully you'll get a good idea what the price for a pair would be.

Have a look for some tire reviews also to get more comments on what might be a good alternative, depending on your budget of course. Here's one site I found: http://www.tyrereviews.co.uk/Article/2015-Auto-Bild-Top-18-Summer-Tyre-Test.htm. You will find close to 150 different brands reviewed here, so you're bound to find most tires reviewed here that you might be interested in eventually changing to.

Here's another one: http://www.tyrepress.com/2015/02/premium-tyre-makers-top-adac-2015-summer-tyre-test-eco-tyres-compare-poorly-with-non-eco-counterparts/

Good luck!