HELP!! Please advice - our B5 Wagon is eating front tyres?

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alpenweiss2
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HELP!! Please advice - our B5 Wagon is eating front tyres?

Post by alpenweiss2 » Thu Nov 08, 2018 9:05 pm

We have a 1999 B5 Wagon which is eating front tyres. I had a pair of Uniroyal Rainsports fitted only last September when the cr had covered 163,238 miles. Today we had a blow out/puncture and I discoved the inside edge of the passenger front wheel worn to the wire on the inside edge!!! The car has only covered 9458 miles since then!!

We recently had the car in a British run VW specialist garage here in France (where we live) to have some work done and they replaced a worn suspension arm. They also checked and adjusted the tracking. They said the front tyres were wearing unevenly so I knew we had to replace them I just didn't expect so soon. I have checked the drivers side front tyre and it is also very badly worn on the outside edge (not so much the inner edge).

I am shocked that quality tyres like Uniroyal Rainsports have only lasted under 10,000 miles and are now worn to the point where they are unsafe.

Anyway tomorrow we plan to get to new front tyres fitted (not easy in rual France), but I want to know what could be causing such wear? Where we live it is mountainous and we are constantly driving on very, very windy roads? Could this be the issue? Any thoughts people?

howey
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Re: HELP!! Please advice - our B5 Wagon is eating front tyres?

Post by howey » Thu Nov 08, 2018 11:12 pm

The tracking/wheel alignment previously been out sure wont have helped and nor will harsh cornering but sounds unavoidable!
You could try running the tyres at higher pressures that may help, i ran mine at 40 psi all round

bobfish45
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Re: HELP!! Please advice - our B5 Wagon is eating front tyres?

Post by bobfish45 » Fri Nov 09, 2018 12:21 pm

The fact that you have inside edge on one side and outside edge on the other tyre would suggest to me that the camber angle is, for some reason awry.
When you replaced the previous set of tyres before these, did they have the same wear pattern? It sounds as though the pass side has too much negative camber, and the drivers too much positive camber, though from here it would be impossible to say why.
If you park the car on some flat level surface with the wheels pointing dead ahead, then go to the front of the car and move back until you can view both front wheels equally, try to gauge if they look symmetrical, or is one leaning more than the other?

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MiniMental
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HELP!! Please advice - our B5 Wagon is eating front tyres?

Post by MiniMental » Fri Nov 09, 2018 2:30 pm

bobfish45 wrote:The fact that you have inside edge on one side and outside edge on the other tyre would suggest to me that the camber angle is, for some reason awry.
When you replaced the previous set of tyres before these, did they have the same wear pattern? It sounds as though the pass side has too much negative camber, and the drivers too much positive camber, though from here it would be impossible to say why.
If you park the car on some flat level surface with the wheels pointing dead ahead, then go to the front of the car and move back until you can view both front wheels equally, try to gauge if they look symmetrical, or is one leaning more than the other?
That could be achieved quite easily actually.

If the subframe has ever been disturbed or it’s had a sideways knock like say, sliding into something on mud or ice, it could have shunted the subframe. The subframe moving (Left/Right) directly affects camber on the front. This would have the effect of making one side have positive camber and one negative.

In reality, I think you would struggle to achieve this without a serious-ish knock however. Maybe something worth checking if your in doubt. A simple camber check should tell you as both wheels should be identical camber wise on the front. Even if they’re just half a degree out, the effect could be amplified when steering or loaded and be causing your wear...

Food for thought.


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bhodgkiss
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Re: HELP!! Please advice - our B5 Wagon is eating front tyres?

Post by bhodgkiss » Fri Nov 09, 2018 6:53 pm

10,000 miles isn't that bad for a set of front tyres on a torquey diesel on windy roads, and these died prematurely probably due to poor alignment (you'd had a worn suspension arm as noted above)

You're lucky you didn't kill anyone.
It's nothing to do with the quality of uniroyal.
It's just poor car maintenance (it has to be said)

Glad you're all ok!

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ct.p
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Re: HELP!! Please advice - our B5 Wagon is eating front tyres?

Post by ct.p » Fri Nov 09, 2018 7:48 pm

Another thing to consider is the method of alignment.

There is a world of difference between simply having the fronts tracked into each other vs proper four wheel alignment where all wheels are tracked together.

If it had been tracked simply only on the front wheels then that could explain a lot.

And also the "S" curve or toe curve alignment is critical on these cars. With your style of driving on twisties especially so. This is set via the trackrod end height in the steering knuckle and if off the tracking will be out as soon as the steering is anything other than straight ahead. This I think is probably your main issue.

Most people when they change the track rod ends or split them from the knuckle will, when putting them back, slam them down onto the stop which will cause issues. Trying to find anyone who even knows about the "S" curve setting, let alone anywhere that can measure and adjust it is another matter. VW themselves use a jig and will check and measure the alignment at various steering angles and suspension compression to get it right.

In my opinion, it is the only thing wrong with the otherwise very clever front suspension. Nobody can set it up properly!
VCDS and Vagtacho in Maidenhead Berks

alpenweiss2
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Re: HELP!! Please advice - our B5 Wagon is eating front tyres?

Post by alpenweiss2 » Sat Nov 10, 2018 9:51 am

Thanks for all the replies. Car is going into the garage on Monday for two new tyres and alignment check.

gtijames
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Re: HELP!! Please advice - our B5 Wagon is eating front tyres?

Post by gtijames » Sat Nov 10, 2018 10:14 am

I've used uniroyal tyres before and found them really good for grip but a fairly soft tyre that didn't last too long.
Sounds like you have some sort of alignment issue but wear could just be a softer compound tyre.

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