Posts Tagged ‘popular’

Cross Ply tyres versus Radial Ply Tyres

Cars make use of the radial tyres entirely but the ones fitted to motorbikes retain the cross-ply form of construction and even the tyre engineers state that radial tyres are not appropriate for motorbikes. This is in fact quite right as cars and motorbikes are very different and should have different tyre requirements. However, of late the radial tyres are considered to have benefits to offer to motorbikes as well.
Several piles of cord are laid on top of each other at a bias angle of 40 to 50° to make a cross ply tyre. This consequence in the creation of a cross at an direction of 80 to 100°. The layered and angled structure of ply tyres results in the tread not reacting in exact symmetry to that of the loads applied.
The symmetry is completely lacking in cross ply tyres and this can cause the tyre to run to one side nonetheless while rolling on a completely level and even surface. This effect is known as “Ply Steer”. The cross manufacture of the carcass efficiently forms parallelograms of thread imbedded in the rubber, this is not a sturdy form of construction and under driving or braking torque, upright load and centrifugal sound effects these parallelograms deform, which allows squirming of the contact area and tyre toss or diameter enlargement at elevated pace, reducing constancy and heating the tyre. Such heating eventually manifests itself as amplified rolling conflict.
By simple observation one can conclude that radial tyres create a greater and wider area of impression compared to the cross ply tyres. Such a fact highlights that radial tyres have better grip than cross ply tyres. Again in loaded conditions the radial tyres outscore the cross ply tyres as they have larger contact area with the surface of the road as they the tendency to become littile bit flat which is not the case in cross ply tyres.
Radial tyres contain less plies that is generally confined to one or two than the cross ply tyres that require three to four plies, so as to have greater flexibility in sidewalls. To maintain the entire tyre stiffness the reduction of sidewall height is required and thus results in lower profiles of 50 to 70 %. On the other hand the cross ply tyres make use of 90 to 100% of the profile. The lower profiler is an indication of having smaller diameter. The cross ply tyres have larger diameters in comparison to radial tyres of the same size. This trend contributed to the growth of 17” wheels while leading to the decline of the popular 16” wheels.
In the year 1984 radial tyres were introduced for the first time. The bias belted tyres were the most commonly used tyres until then. The cross-ply tyres were the next in line of production, which added circumferential belt plies. As and when the developments took place the older technology got replaced with newer ones giving way to improved tyre strength, agility and overall performances.

Dunlop tyres

Dunlop motorcycle tyres were the most popular ones at one time. The D207 was one of the largest selling sports tyres and subsequently the D208 tyre was also launched. An experienced journalist based in UK gave some comments, which led to a furor and created confusion in the perception of people. The D207 and D208 were not able to attain the success they had set out to achieve. The reasons for the failure can be attributed to the OE-spec D207 and D208 tyres, which were fitted on some of the Japanese sports bikes at that point of time.

The OE-spec tyres differ considerably from the replacement tyres in the aspect that the bike manufacturers tend to ignore the caution when stipulating the performance and instead build the tyres designed for specific bikes. The Stability is increased but at the cost of some agility. Even the outright grip may be compromised with, to achieve the mileages wanted by the manufacturer.

Bike manufacturers submit their bikes to the magazines for testing in 100% OE conditions which means the sooner the journalists are able to pick the difference basing on their performances they are more likely to be able comment on it and write articles on them. The comments are usually specific to on track riding and are never on on-road riding. The public develops an opinion after reading the articles and may not be completely aware of the actual features. The simple process of developing a negative opinion can cause lot of after effects and it may become a widely perceived opinion. The particular thing happened in case of all D207s as a general perception of them being average tyres got lot of negative publicity.

But the same tyre is now widely considered to be the best among the equals and in class with the Michelin Pilot Power 2CT. The use of Dunlop’s Muti-Tread compound technology lends it an edge as Dunlop can deliver a tyre that achieves both higher mileages and higher levels of grip. The different silica in the central and side compounds used by Dunlop tunes the tyre to improve the wet grip while not sacrificing dry grip.

The Dunlop Qualifier RR is full of features that one admires and has qualities that are desired from a super sport road tyre that gets used rarely on track. The technology of triple compound increases the miles, the softer compound give the edge while the grip and the carcass let the tyre to handle changes in temperature very quickly.

The Dunlop tyres have been invariably developed and employed in bikes used for British Super sport races. The 209GP race tyres are the ones, which have won the admiration and have been in use in the racing circuit for a while now. The specialty of these tyres is that they lend the bikes balance and help them from going off track.

The Dunlop may not be considered as a reputed company anymore in the present scenario. But the new ranges of tyres are already leading the pack and it won’t be long before they regain their status of being world class.

Tubeless tyres

With the advent of pneumatic tyres a change took place, which was for the better. The tyre industry saw a rapid growth potential and turned into a big time business in a span of few years. The pneumatic tyres were a welcome addition to the already plagued vehicle industry.

The initial success in two-wheeler segment led to the development of pneumatic tyres for the four-wheeler vehicles. The growing demand which kept on increasing day by day then led to the development of tubeless tyres and with it brought about a similar revolution of sorts that had occurred when pneumatic tyres were first developed.

The tubeless tyres are simply pneumatic tyres that are free from any additional butyl rubber tubes that may be required in other kind of tyres such as the tube tyres.

Traditionally the pneumatic tyres require an inner tube made of butyl rubber that act as a protection and needs to be filled with appropriate air pressure to ensure the tyres proper alignment. Such a design has its own demerits as the damage to the tube caused the tyre to deflate and rendered the vehicle unusable until the repair work is undertaken.

But in the present scenario the tubeless tyre have started to gain in popularity and designers as well as the manufacturers are easily getting attracted to its features. The main reasons why the tubeless tyre have taken everyone by storm is due to

• Tubeless tyres require very less time for fitting and this can be done quite easily
• The inner lining of tubeless tyres are so designed that they are able to self-seal small incisions that may occur within the tyre.

The inner lining of the tubeless tyres is of prime importance as their function is similar to that of traditional tyre tubes, which prevented the air to escape from the tyres. The linings form a unit with the carcass and thus are under no tensional stress unlike the tubes. Small incisions or damages don’t affect the functioning of tubeless tyres and the immediate failure of tyre pressure is a distinct possibility and allows some time before the complete loss of tyre pressure. In certain instances of incision to tyres the tubeless tyres have been reported to be functional for more than two hours without the drop in performance as tyre pressure is gradually lost.
The issues related to conventional tyres are greatly avoided by making use of tubeless tyres. But one needs to verify all the aspects before opting for tubeless tyres, as it is not always a feasible option. In small vehicles that are prone to regular wear and tear the use of tubeless tyres is possible but one has keep in mind the financial aspect as well. In the long run tube tyres may require lot of maintenances but can be a cheaper option when compared to the expensive tubeless tyres.
The tubeless tyres are functional only when the safety of contour on the rim is taken care of and air tightness is properly maintained.

Cheap and puncture proof tyres

One can be sure of that nothing in life is sure at all. The world is in a persistent state of wavering and the constant that one can be able to bet on is the constant state of change. By this it’s meant that one cannot plan for what lies ahead in the figurative road, or the literal one for that matter. If an individual could prevent something bad happening on that literal road, most people would. That’s just possible by using puncture proof tyres.

Understanding that there are several different things that one needs to know and appreciate about these tires. Now, the first thing that one is going to want to understand will be exactly what these tires actually are. How are they supposed to be able to decide which tires to get if they are not even entirely sure what the options actually are? One should understand that puncture proof tires are the kind that will be able to take a beating without getting a hole.

There are a few dissimilar things that have to be understood about these tires. In learning these features, one can see how they might benefit from the use of the tires. The first of these things will be the resistance to being punctured. These tires are built tougher and thicker, so the possibility of getting a hole in them drops considerably.

They are almost impenetrable but not exactly. They are very close to being, more than any other tire on the market anyway. But still these need to be protected if something were to somehow puncture the tire.  There is a defense system in place that allows drives up to 100 miles on a tire with a hole in it before the pressure becomes too compromised to safely drive on. This gives enough distance to find a place to replace the tyre.

Finding that these tyres are gaining popularity with each passing year, most of the companies are grasping the technology behind them and coming out with their own versions. It means that the science behind the budget tyres always keeps on improving and the tyres being released now are the best that all are able to purchase.

The best car tyres either provide performance or economy. This is dependant on a person’s point of view, the money available with them and the car they drive. For the majority of drivers, the most important thing is the durability of the tyre.

It’s expected that an average tyre should last 30,000 miles. Practically, this isn’t always possible. Driving on damaged roads or driving a lot of miles around towns and cities will have an impact on the mileage that a driver gets from a tyre. Highway miles are best for tyres, because the regular speed and lack of tight cornering help to preserve the tyre.

To lend the car a good balance, it is recommended that all four tyres be of the same brand and specification. This will lessen tyre wear and increase grip.