Compare cheap tires with more expensive tires [Vredestein]


Uploaded by autoblogger on 04.09.2011

Transcript:
Welcome to our tire test.
We'll show you the difference between discount tires and premium tires...
...Vredesteins in this case.
You've had a little taste of the action and the difference is quite staggering.
We'll be doing three tests; an evasion maneuver or a lane change...
...a brake test and a lane change on a dry track.
Maybe it's understandable that a cheaper tire performs less in wet conditions.
We're going to find out how much difference it makes to buy more expensive tires.
Test 1 on the Vredesteins: a simple evasion maneuver at 62 mph.
We have a GPS so we can more or less exactly drive at that speed.
I'm going to drive past the cones and go left or right.
And I'm hoping I won't lose control.
Let's keep some faith.
Vredestein tires
Now I'm going to do the same maneuver on the discount tires.
Let's see what difference it makes.
I do want to emphasize that this isn't staged.
I'll try to drive at the same speed.
And besides that the test'll be exactly the same.
I'd love to know the results.
Discount tires
That went wrong in a spectacular fashion, but why?
You can say that again. Here's why.
The tire's construction is key to its handling in dry or wet conditions.
Most of the developments are taking place here, in the tread. Especially in its compound.
And what's the difference between a discount tire and this Vredestein tire?
The difference mostly comes from the secret rubber compound.
So it's not just a slab of rubber that you press into the shape of a tire?
If only it was that easy.
A lot of research goes into the development of the tread compound, it's not that simple.
But you can brake well with every tire, right?
You can brake with every tire...
...but you need a good construction and especially a good compound to brake well.
I'm going to try it.
Test 2: braking.
I'll be braking hard from 62 mph to see what the braking distance is.
It's not that exciting, there's nothing for me to hit.
Vredestein tires
This is the braking distance with Vredestein tires.
Now we'll place a little inflatable car right here...
...and see if discount tires also stop the car in time.
Discount tires
That went well. How does braking work exactly?
A tire and thus a car brakes parabolically.
This graph shows the relation between a car's speed and braking distance.
The blue line, tire A, is parabolic.
The graph shows that when the car with the blue tires has stopped...
...the other car is still doing 25 mph. We've tested that on an official test track.
That's quite fast. -Especially for the blue car.
It doesn't rain every day of course, so we're also going to test in dry conditions.
We're going to do the lane change again at 62 mph.
First we'll do the Vredesteins and after that the discount tires.
Vredestein tires
Discount tires
The difference in those tests is very clear.
The price difference is also very clear.
But don't forget that the price difference is there for a reason.
Lots of R&D, but the materials used in a premium tire are also more expensive.
You buy a little extra safety.
This wasn't a scientific test in which we drove exactly 62 mph.
We just wanted to show what happens with a discount tire.
If you'd ask me what tires you should buy...
...I would tell you to invest just that little bit more. It makes such a big difference.
My assistants, there they are, are picking it up.
And then we'll just do it again, because it's fun.