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[martin42]

Where's the popcorn,and other munchies 

[mark3]

I just don't see how something so simple cant be understood?

[omega3000]

Wow this is a long post ....got lost on the physics      here   

 
phew.. an interesting physics debate.. for exact proofs you need to solve many equations
 
I can simply say that there is no meaning to have more friction force between tire/road vs disc/pads
 
because at the final point tires will have the last word   so increasing one friction force alone on disc/pad  -may- have some effects but not bigger than tire/road friction force..
 
 

Hope you get it sorted .

[D]

I just don't see how something so simple cant be understood?

Simple. Because you are saying that it is easier to stop a smaller tyre. True. but at the same vehicle velocity, when you take into account the weight of the omega, then the difference you are talking about is negligble.

If on the other hand, you were on a car lift, accelerating with no car weight to carry, then yes the smaller tyres would proably stop quicker. I suspect you could prove this by using the angular velocity equation?

Comparing like for like, at the same speed, the inertia of the car is the same, irrespective of the tyre size. Braking reduces the inertia. The first limiting step is tyre contact with the road and that is what usually lets go first. The next thing is pad size/friction. Then the lever action of the brake. In your case you have changed none of these (or rather gone for a smaller tyre contact patch), so how can you explain the benefit?

Happy for you to explain it to me mathematically if you prefer?

[mark3]

What velocity makes no difference, brakes are better over the whole speed range............... and when i say better i mean they are slowing the car better when exerting the same force on the brake pedal.

Im not talking about locking up the wheels or the tyres ability to grip the road surface or heat build up in the disc, thats going beyond what i mean, its simple physics, the smaller the diameter of the tread surface in comparison to where the brake friction material is located between tread and hub the less force required to slow or stop! i cant think of a simpler way of explaining it.

As i said i never fitted these tyres to gain better brakes or more direct steering, i never even considered it but once they fitted and i noticed the difference i came to the blindingly obvious conclusion, it was along these lines "oh yeah, i never thought of that" lol

[martin42]

Why not do a before and after test,and use the brake machine at an mot station and compare the results,if as you say it has improved then surely the result would be higher braking power,or have I just lost the plot on here 

[cem_devecioglu]

What velocity makes no difference, brakes are better over the whole speed range............... and when i say better i mean they are slowing the car better when exerting the same force on the brake pedal.

Im not talking about locking up the wheels or the tyres ability to grip the road surface or heat build up in the disc, thats going beyond what i mean, its simple physics, the smaller the diameter of the tread surface in comparison to where the brake friction material is located between tread and hub the less force required to slow or stop! i cant think of a simpler way of explaining it.

As i said i never fitted these tyres to gain better brakes or more direct steering, i never even considered it but once they fitted and i noticed the difference i came to the blindingly obvious conclusion, it was along these lines "oh yeah, i never thought of that" lol

mark , why do f1 cars use wide big tires instead of using small and narrow ?

[TheBoy]

I just don't see how something so simple cant be understood?

I think you need to show us the maths, as currently, you haven't given any kind of explanation, other than said its fact.

That might help explain it. As to be honest, I still cannot see it.

[Andy H]

I just don't see how something so simple cant be understood?

Me neither

I blame the state of modern maths education