Bouba
Well-Known Member
I thought that was because their cars are more powerful
Tyresome question....
- Thread starter Slowtack
- Start date
Refueler
Well-Known Member
Very funny !
Fr J Hackett
Well-Known Member
Generally ( the squealing is dow to the suspension / tyre relationship. It's been quite a while since I drove a US car on a US road but my impression was that the suspension was very soft allowing the car to roll considerably putting a lot of lateral force on the tyre which in extreme circumstances lead to a loss of adhesion and a squeal.
The modern tyre of what could be referred to as the major manufacturers is composed of many compounds and different profiles all assembled in the carcass and tread one of which in a tubeless tyre is a Butyl skin / liner that is virtually impermeable to nitrogen and oxygen ( 99%) of the air that is normally compressed to inflate a tyre. so loss of pressure is not a factor except via the seating on the wheel which regardless of molecular size will not be affected by changing from air to nitrogen. There is an argument that could be used for an F1 car in that compressed air could have a degree of water in it and this has different characteristics to a dry gas leading to pressure fluctuations as the tyre warms, it's a very debatable point and certainly not one that would be noticeable in the domestic cars, super, ICE or EV.
The only significant formulation changes are for climatic reasons, hence winter tyres and yes using a winter tyre with its different formulation in the hot summer of Southern Europe or the States will result in reduced life and performance.
There are manufacturers at the bottom of the market that will use less compounds, have less control over their raw materials which will result in lower performance ( life, breaking, road holding etc) Tyres are certainly a product where the maxim "you get what you pay for" is very true but that is not to say that someone that drives a modest car with modest journeys and requirements should be habitually buying "top end" performance tyres more suited to high performance cars.
billskip
Well-Known Member
I think y'all watching too many movies..all the times I've rented cars in the US of A I've never heard squealing tyres...
Bouba
Well-Known Member
My Tesla gives me acceleration like I have never known....but it’s never squealed or smoked a tyre
Refueler
Well-Known Member
It was for years that USA tyres were said to have more 'rubber' in the compound to that of EU / UK .. and that helped cause them to squeal at lower cornering speed than EU / UK tyres.
Maybe the difference has been reduced now - but the USA compound was fact.
I drove a lot in USA and it was an annoyance .. squeal .. squeal ... squeal ..
A Base Oil client of mine in Latvia was crazy for American cars and he had similar cars to what I drove in USA ... never heard his squeal on EU tyres ... which seemed to confirm what I had read ..
Slowtack
Well-Known Member
European cars front wheel suspension is designed to "lean into" a curve when the steering is turned... US made cars dont all have this feature.... Or so I have been told... And this is what causes the squealing noise.... Discuss - with proof if in disagreement... 50 marks
Bouba
Well-Known Member
billskip
Well-Known Member
My Conquistador did.....
Slowtack
Well-Known Member
Some of my rentals didnt...
alahol2
Well-Known Member
I have a boat on a yard trailer that gets blocked up. I don't let the tyres down. I'm also Fred down the club who's tyres are now about 15 years old. I do inspect them and they still look fine. Tyre pressure is about 65 psi (400?!?).
oldharry
Well-Known Member
Depends how far you need to go on them when you tow. I had a 70 mile trip at the beginning and end of each season The tyres looked fine until one night towing down for a morning launch a sidewall failed totally out of the blue....
alahol2
Well-Known Member
About 200m (metres), to the low water line, then wait for the tide to float us off. Trailer probably weighs close to a tonne on its own. 28ft, near 4 tonne boat.
Bouba
Well-Known Member
A launching trailer has other problems as well....the wheel bearings that heat up on the journey get a sudden dunking in cold water...they don’t like it. And corrosion, especially if you launch into saltwater....the rims can corrode...not good for tubeless tyres
alahol2
Well-Known Member
I don't think our bearings get very warm. Max speed is about 3 mph then an hour waiting for the tide to reach the bearings. Repacked every year. Rims are the biggest problem they rust like nobody's business if not thoroughly flushed with fresh water and painted frequently.
Bouba
Well-Known Member
I don’t think tyres are such a big problem on a four wheel trailer....as you have five points of contact....four tyres and a tow hitch. But it’s critical on a two wheel trailer....but the great advantage of a two wheel trailer is it’s very cheap to change all your tyres
William_H
Well-Known Member
I would consider tyres as the primary concern on a trailer being towed at distance and speed. Not in my case however my first trailer tyres must have been 40plus years old originally from a car. I did replace them with high load commercial vehicle tyres. Now 10 years old and done perhaps 100km.
Next concern would be bearings then brakes and trailer structure. I get nervous just towing my boat half a Km to water each spring. But so far not too many problems. ol'will
ducked
Well-Known Member
I think that might be because a majority of films (movies) involving drammatic tyre (tire) squeals are made in Hollywood.
There are British "only in the movies" automotive artefacts too. For example, a Ford Grenada with a smoky exhaust appearing in The Avengers is almost certain to drive off the edge of an abandoned quarry, statistically much less common IRL.
ducked
Well-Known Member
Possibly.
But if it is, it was documented twaddle, derived, mostly from the burst of US Highway safety agency research that followed the Bridgestone tire/Ford Explorer rollover fatality epidemic and subsequent legal action, which long predated AI.
The boot polish suggestion admittedly comes from The Worlds Fastest Indian and may only be a cosmetic effect, then again it may not. I doubt its ever been formally tested.
(Wasn't Kiwi, though Munro was from NZ. Some antipodean brand I forget)
There are "official" protectants that claim to resist UV (and perhaps ozone?) damage (Aerospace 303 IIRC, for example) that might have been formally tested, though if they have I doubt the results are available to the punter public
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Refueler
Well-Known Member
Friend of my Father used to supply all sorts to movies ... from small items up to even aircraft. Its how my Father was in the group that flew the B17's to UK for the movie War Lover.
Anyway Don - the guy - was often asked to make the cars 'sound' when comming to a stop ... which is actually extremely difficult. The cameras do not pick up the slight natural sound and has to be enhanced by physical and sound desk tricks.
Anyway back to US tyres ... I spent quite a lot of time in USA ... and drove various of their 'floaty crap gas guzzling cars' and later compacts ... I would not say all - but most did squeal when going 'energetically' round corners ...
I also read an article that talked about the different compounds for different regional markets - which had the info about USA tyres .. it was quite a while ago ..
