Tires are built from a series of products some containing special properties and some cording. The Radial Ply tire consists of a Butyl base layer which gives the non porus properties to maintain air pressure (tubeless). Then there are one or two layers of a corded product with the cords running across the face of the tire from left to right. Then
a series of products for side wall the bead area and White rubber if the tire is a White Walled tire. The tire is then inflated and shaped to what we all recognize as a tire shape, where bands of metallic products cross in an X pattern to give the tire it's "radial" support and strength. The Plys are the combination of all of the polyester and metallic belts or bands that give the tire this support.
120 - 140lbs., depending on the specifics of the tire.
thrust bearing takes axial loads radial bearing takes radial loads axis is line about which races or ring rotate
Radial forces.
60 pounds
A wagon wheel
Radial ply tires and tubeless tires are made from rubber, fabric, and steel.
You can use a radial tube in a bias ply tire BUT you can not use a bias tube in a radial tire. The sidewall flex of a radial tire is greater than that of a bias ply. A bias tube cannot flex as rapidly as a radial tube and so the resulting friction or rubbing create too much heat and the tire/tube combination will blow.
Instead of using steel belts (the way a radial tire does), the tire is entirely rubber.
The load capacity of a tire is indicate by the star rating (in case of radial tire) and the ply rating (in cse of bias tire).
Radial tires are worlds beyond bias ply tires. In radial tires, the steel chords are placed in a criss-cross pattern. Whereas bias ply tires are placed flat across the face of the tire. Bias ply tires are much, much harder for the engine to turn and are much harder for the suspension to compensate for. Bias ply tires are almost no longer used. That goes for America at least.
23.5-25 is bias ply tire 23.5r25 is radial tire
Bias ply tires get a flat spot from sitting but I have yet to see a radial tire do that.
Bias ply Tires (called cross ply in the UK) due to the construction of the internal belts actually had the trad squirm as the tire went around. Radial tire construction corrects this problem. Radial tires are also made of more advanced "Rubber" compounds that wear better
There are two types of tires mostly used in cars and commercial vehicles: Radial and Bias.Bias Ply tire: This type of tire has diagonal or bias plies. These plies crisscross. This makes tire strong in all directions because of the plies overlap.Radial ply tire: In a radial tire, the ply cords run in the radial direction. The plies run parallel to each other and vertical to the tire bead. Stabilizer belts are applied over the plies to give extra strength parallel to beads.Now we look at advantages of radial tire over a bias tire:Good high speed capacityLonger lasting and Longer tread life (Up to30%- 50% longer)Steel Belted - Results in tougher overall constructionBetter floatation ,larger contact area wider footprintLow heat build-up or run coolerLower rolling resistanceBetter Fuel EconomyBetter stabilityWear resistantSmoother, more quiet rideDisadvantage of radial tire over a bias tire:More prone to puncturing at side wallsSide wall bulgingMore difficult to repairHigher purchase priceHeavier steering at low speeds but power steering facility is there so it is acceptable.So mostly in all modern cars radial tires are used.
This all stems back to bias tires. A few decades ago, to gain more load carrying capability, tire manufacturers added more plies to increase the amount of pressure a tire could safely contain. Remember, the pressure carries the load, but the plies contain the pressure. Switch to radial tires, specifically radial truck tires (19.5, 22.5, etc.), tire manufacturers now use 1 single steel cord ply that runs radially from one bead to the other that has the equivalient strength of multiple fabric plies that were used in bias tires. Even with light truck tires, you might see a load range E radial tire referred to as a 10 ply tire, does it have 10 plies? Nope, usually 2 or in some cases 3 very strong polyester body plies.
H is the load range of the tire which indicates the ply. H is a 16 ply tire.
Radial tiers have a lower rolling resistance than previous types of tire Resistance is energy, in tires resistance creates heat. Radial tires construction and the materials they are made of create less heat and roll easier. And if you need a more detailed explanation you need to look at Bias Ply tires (called Cross Ply in some countries) and Radial tires to see why it makes a difference