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Car car car car car trouble ............ - Computer Says No
I was driving home in my car (conveniently) last week, and I thought the car was driving a bit "funny".

When I got home (12 miles) I noticed that the rear driver wheel was flat. And red hot.

I pumped it up (after letting it cool down) and went to the local tyre place and bought 2 new (budget) tyres for the back.

Now the car seems unstable, and when I braked going round the roundabout I nearly lost control of the car and narrowly avoided a van on my right and railings on my left - the steering just seemed to "lose it".

Also when going round corners, the rear wheels do not grip like they used to. The budget tyres have a good tread, not remoulds, and apparently are made by Dunlop. They were £45 each.

The car is a Toyota Avensis GS 1.8 on a 2000+ X plate.

Have I damaged the rear axle by having an overheated tyre?

Have I damaged the brakes?

The manager of the car tyre place "wellied" my car around an estate, doing fast left and right turns, slaloming etc and could not replicate the problem?

Any ideas?

Have I just bought crap tyres?

(also posted on "usenet")

Arfur
Car car car car car trouble ............ - Algernon
It could just be under inflation of those rear tyres by the tyre place. Check with a decent gauge.
Car car car car car trouble ............ - Dude - {P}
Could also mean that you have fitted cheap cross plys to the rear wheels whilst you have radials on the front. A dangerous and illegal combination, that should you get involved in an accident would invalidate your insurance.!!!
Car car car car car trouble ............ - kithmo
Methinks someone is talking some bovine secretions here. Cross plys !??? Where have you been for the last 30 years dude. Nobody sells cross plies any more except vintage and classic car specialists. Even then it was OK to fit cross plies on one axle (i.e. both rear wheels or both front wheels) and radials on the other, as long as you didn't fit a cross ply to one side and a radial to the other. Most likely the tyres have not bedded in yet. It takes a good 200 miles in dry weather (longer in wet) to get rid of the stuff that's on the tread that prevents the tyres sticking to the mould during manufacture. Drive carefully till they bed in then if they're still iffy take them back. Alternatively you may have just hit a patch of diesel spilled on the road.
Car car car car car trouble ............ - spikeyhead {p}
One reason that race cars exit the pits with lots of wheelspin is to scrub teh tyres in.

A similar problem exists on all car tyres, there are lots of little nodules from the moulding process that reduce the grip. Once they are worn away, the grip increases dramtically. This couls be the cause of your problem.
--
I read often, only post occasionally
Car car car car car trouble ............ - sean
Arthur,

Worry no more.

You're in just the right place to help you.

You've had 2 tyres fitted to offside rear and nearside rear.

Yes? Reply, if not.

Look at the sidewalls and tell me the sizes eg 185/65 HR15 or some such malarkey.

Is that the same as you read on your unchanged front tyres, please?
Car car car car car trouble ............ - Computer Says No
Arthur,
Worry no more.
You're in just the right place to help you.
You've had 2 tyres fitted to offside rear and nearside rear.
Yes? Reply, if not.
Look at the sidewalls and tell me the sizes eg 185/65
HR15 or some such malarkey.
Is that the same as you read on your unchanged front
tyres, please?


Front tyres - 1 year and 9,000 miles old each:-

"Michelin Energy 195 / 60 R15"

Rear tyres - 1 week and 90 miles old each:-

"S-1031 195/60 R15 88H Radial"
Car car car car car trouble ............ - sean
Good.

The tyres are OK. The right size, the right load rating.

Your front tyres are the best in the business. Michelins. Made in different factories, all over the world.

Your rears will be CE approved, but not as good.

Thrash them soundly. We are a bit slack in this country at present. Try them and be amazed. A bit noisier but very grippy. Check your pressures beforehand though. About 34psi from memory.

I think we've helped you here.

Well done, my friend.
Car car car car car trouble ............ - Computer Says No
Good.
The tyres are OK. The right size, the right load rating.
Your front tyres are the best in the business. Michelins. Made
in different factories, all over the world.
Your rears will be CE approved, but not as good.
Thrash them soundly. We are a bit slack in this country
at present. Try them and be amazed. A bit noisier but
very grippy. Check your pressures beforehand though. About 34psi from memory.
I think we've helped you here.
Well done, my friend.


The front tyres are solid.

The back ones are a bit flabby, so they may be low pressure, too dark tonight to check now. Will try in the morning.

Shouldn't the tyre place have put the right pressure to them?

Kwik Fit did the front ones at 3105 each. Car on a big ramp 5 foot up when they did this.

Tyre place jobbies - they just jacked upp the one tyre to fit, lower the jack, moved to other tyre and fitted that.

I didn't see them fit those metal wedge balancing things - would they have done that inside the garage on a machine? They said they did balance them, but I did not see them do this.

But low pressure seems the most likely culprit here, just checking the car manual ................

Looks like front and rear should both be 32 (under 100mph, load size irrelevant)
Car car car car car trouble ............ - Computer Says No
That's £105 each at Kwik Fit!

Can I say this place is most helpful, unlike usenet.
Car car car car car trouble ............ - carl_a
www.wanlitire.cn/en/Exhibit2/exhview.asp?pid=42&ci...9

www.wanlitire.cn/en/Info/index.asp

Made by Dunlop LOL
Car car car car car trouble ............ - Computer Says No
Made by Dunlop LOL


Thats' what the mechanic told me.

Still they look OK, I just hope that the standard of the tyre is better than the manufacturer's standard of English on those web sites!
Car car car car car trouble ............ - Computer Says No
Check your pressures beforehand though. About 34psi from memory.
I think we've helped you here.
Well done, my friend.


Well the 2 fronts were 32, the 2 new rears were 28 - I have now blown these up to 32, will try them out later.

Still, 28 doesn't seem too bad, will it make the difference?
Car car car car car trouble ............ - hillman
Pump them all up to the pressures recommended in the manual for your particular model of car. Front tyres which are correct and back ones which are 4 psi under inflated will give you a floating feeling, especially so if the rear tyres are new.
You don't seem certain about pressures and procedures. Always do it cold. That means before you leave home, not at a filling station! (In any case, gauges at a filling stations can be wildly inaccurate.) It is the best practice to carry a pressure gauge in the car with you. If you don't then get one from a motor factors which states that is accurate, and of recommended quality - don't buy a cheap one. Then check it against a few others.
Car car car car car trouble ............ - Computer Says No
Pump them all up to the pressures recommended in the manual
for your particular model of car. Front tyres which are
correct and back ones which are 4 psi under inflated will
give you a floating feeling, especially so if the rear tyres
are new.
You don't seem certain about pressures and procedures. Always do
it cold. That means before you leave home, not at
a filling station! (In any case, gauges at a filling
stations can be wildly inaccurate.) It is the best practice to
carry a pressure gauge in the car with you. If
you don't then get one from a motor factors which states
that is accurate, and of recommended quality - don't buy a
cheap one. Then check it against a few others.


I pumped them up using a pump that I plug into my cigarette lighter. I got this from Halfords many years ago.

But would going from 28 to 32 fix the problem?

The problem appears worse in the wet. When the mechanic tried the car (with me as passenger) the roads were dry.

When I lost it on a roundabout (it went to the right, so I steered to the left to fix it) the road was damp.

Problem is, I don't trust the car any more. And when that happens, it has to go. Hasn't it?
Car car car car car trouble ............ - Dynamic Dave
The problem appears worse in the wet. When the mechanic tried
the car (with me as passenger) the roads were dry.


As previously mentioned further up this thread, new tyres have a substance on them called a "releasing agent" This is to aid removal from the mould when tyres are made. As you slipped in the wet, chances are this is what caused you to slip. Give the tyres a few miles to scrub themselves in (200+) and see if they're any better.
Problem is, I don't trust the car any more.


Take it to an supermarket carpark after they've closed (or other big open space) and give the car some welly to see if you can replicate the problem - after you've scrubbed them in a bit though ;o)
Car car car car car trouble ............ - smokie
It is true that some tyres are less grippy, especially in the wet, and it doesn't have to be a budget tyre to have that effect. I had Avon ZZ9 (I think) on my Omega and they were much worse when new that the worn B F Goodrich tyres which I was taking off.

And the Avons went out of shape after a few thousand miles, giving harsh noise (like wheel bearing), but I didn't realise they were the cause until I'd spent a lot of money changing everything else except the tyres, which still had half their life left.
Car car car car car trouble ............ - Stuartli
If front tyres are under pressure the effect will be one of understeer and, in the case of those at the rear, oversteer.

Garage forecourt guages are notoriously unreliable. Well worth buying a good quality guage and using it.

There should be an indication of the tyre pressues on the car (inside of the fuel filler cap?) or in the handbook.
Car car car car car trouble ............ - Computer Says No
If front tyres are under pressure the effect will be one
of understeer and, in the case of those at the rear,
oversteer.
Garage forecourt guages are notoriously unreliable. Well worth buying a good
quality guage and using it.
There should be an indication of the tyre pressues on the
car (inside of the fuel filler cap?) or in the handbook.


If oversteer is the left rear wheel spinning outwards when going round a roundabout (so the car spinning clockwise), then upping the pressure from 28 to 32 may be the solution.
Car car car car car trouble ............ - Stuartli
>>upping the pressure from 28 to 32 may be the solution>>

Such a comparatively small difference in tyre pressures is very unlikely to be noticeable.

I used to know a Dunlop tyre representative, who once informed me that maintaining the correct ratio between the front and rear tyres was more important than if they were slightly higher or lower than they should be i.e. 30 - 28 or 32 - 30.

Tyres would have to have lost quite a lot of pressure before any effects can be felt at the steering wheel or in the handling - heavier steering effort would be one in the case of front tyres and, even then, power steering would probably mask it.

I always keep my tyre pressures three or four pounds higher than recommended; it saves having to adjust them when I go on motorways.

Ironically my VW Bora handbook states that with a full load of passengers etc the rear tyres should be raised to 40psi...:-)
Car car car car car trouble ............ - hillman
>>used to know a Dunlop tyre representative, who once informed me that maintaining the correct ratio between the front and rear tyres was more important than if they were slightly higher or lower than they should be i.e. 30 - 28 or 32 - 30.

Good point.
When checking pressures check all four, and then the spare. Use the same gauge for all of the tyres and then even if the gauge is slightly inaccurate the relationship of pressures will be maintained.
Don't rely on a gauge fitted to the pump. I have had two pumps with gauges and they have both been hopelessly wrong.
When you check your gauge do so against several gauges of different types. Who knows, one of them might be duff.
Car car car car car trouble ............ - Stuartli
Re the spare - I always keep mine at about 5psi over the highest tyre pressure required for those on the car (it also allows some leeway for gradual air loss).

Then, if you are unlucky enough to have a puncture, once you have replaced that tyre, you can reduce the spare's pressure to the required figure. It will also be accurate as the tyre will be cold.
Car car car car car trouble ............ - Kuang
I had a very similar problem with Avons on my Golf - the OSR one went pear shaped (literally) obver the course of about 6 months. I never particularly liked them anyway - they seemed a bit snappy in the wet without any progressive feedback of what they were doing - so I found a brand which were basically rebranded Pirellis and had no more problems. I wish I could remember what they were..
Car car car car car trouble ............ - Mark (RLBS)
>>I think we\'ve helped you here.
>>Well done, my friend.

Sean, you\'re getting weird again. Please don\'t.
Car car car car car trouble ............ - P 2501
Sean, you're getting weird again. Please don't.

I thought we had seen the last of him (and eMBe) after you had a little "falling out" with him a while back.
Car car car car car trouble ............ - Computer Says No
Pumping the tyres from 28 to 32 has fixed the problem.

Or perhaps the grease off the new tyres has worn away.

Car is fine.

Never had this happen before.

Will avoid cheapo tyres in future.