DRW vs SRW safety, tire blowout

Lantley wrote:

mbloof wrote:

Lantley wrote:


There is always friction between road and tire.
One of the reason cars cannot stop on ice is there is no friction between tire and ice.
Sure the brake pads stop the wheel but on ice the wheel does not stop the vehicle.
Eliminate the ice and the vehicle is able to stop.

Forgetting for the moment that it is the friction between pads+rotor that ought to be slowing/stopping rather then the tires themselves here's what I had exception with:

"My dually also has more braking power, it certainly stops my trailer much faster the my SRW trucks. Again this is determined from the drivers seat not from the text book."

I'm simply pointing out that for 1T trucks the SRW and DRW have the same pads and rotors IE: SAME BREAKS.

Any implied or imagined extra stopping "power" is NOT from the breaks.



- Mark0.

Your catching on. I never said it was due to the brakes. As you claim the brakes are the same.
It's do to the fact it is a DRW truck that has 2 extra wheels that gives it additional tire surface that contacts the ground!

I'm not real smart, but think without changing what surface is made of, the way to increase friction was increase area, or increase pressure. If you double the surface area, but the weight doesn't also increase, is there more friction? Next when you double the spinning mass, brakes need to absorb more energy to stop the spin.

As to the blow-out safety, can we agree the safest one is the 1 that does not happen? A issue I have not seen discussed often is something like this; Loaded heavy enough to need duals, and 1 blows out. (Even worse, slow leak) You safely get it stopped. All is good, right? Might even drive someplace to get new tire put on. But from the time the bad tire starts to loose pressure, the good tire is overloaded. (Slow leak, it can be many miles of leaky tire heating the good tire) Now that good tire may not fail today, but the damage is just like a note at the bank, it will come due. So the odds of the 2nd blow-out increase.
Then the tire wear problem; Blow-out 1 of pair that has 75% of life left in it, replace that tire. By the time the new wears down to 95%, that 75% will be gone.