Tyres
Here you can see the types of tyres that PG Tyres can supply.
You will also find some information about the manufacturing practices some of our suppliers use, and information about tyres in general; their construction, purpose, regulations and how to know which tyre is right for you.
PCR Tyres (Passenger Car Radial)
PCR stands for Passenger Car Radial. PCR tyres are the most purchased tyres within the industry due to the sheer amount of cars on the roads today. Below you'll find a bit of information about them; from the structure, to advantages in comparison with alternately structured tyres such as Bias.
 
Radial technology is now the standard design for essentially all automotive tyres. In PCR tyres, carcass ply cords run at 90 degrees to the circumferential axis, with the carcass being stabilized by steel belts as shown in the diagram (seen right).
Advantage of Radial tyre :
 
​​Longer tyre life resulting from lesser tread squirming & shuffling.
Improved fuel efficiency due to reduced rolling resistance.
Better high speed performance: Better dimensional and directional stability due to reduced edgewise bending.
Better Vehicle handling due to: 
Minimum distortion in foot print area, higher flexibility of sidewalls and  reduced side slip.
Greater traction, improved braking and cornering stability due to: larger footprint and more uniform pressure distribution.
Commercial Tyres
After the invention of the pneumatic tyre, it was a further thirty years before the first crossply tyres were developed for commercial vehicles. Progress in commercial vehicle technology imposed substantial requirements on crossply tyres which - despite all the
advances made - they were eventually unable to meet.
 
It was only with the introduction of the radial tyre concept, where substantially improved design and materials meant the tyre could meet the necessary requirements, that development was able to progress and reach the standards we have today.
 
There are very distinct differences in the construction of radial and crossply tyres. Whereas the carrying “air container” on crossply tyres is made from criss crossing layers of rubberised fabric, on radial tyres it is formed by radially running plies (casing plies) of rubberised cord (on commercial vehicle tyres steel cord is normally used). A so-called belt, made up of 3-5 rubberised steel cord belt plies, prevents or reduces tread deformation caused by tyre deflection or swelling
when the tyre is inflated.
 
On firm road surfaces the radial tyre is superior to the crossply tyre in many ways. One of the strong points of the crossply tyre, however, is its good selfcleaning tread pattern; its stiffer sidewalls also enhance resistance to tipping on vehicles with a high centre of gravity, such as cranes. 
 
The radial tyre, however, definitely dominates today's truck sector.

UK Tyre Law

UK law requires your vehicle to be fitted with the correct type and size of tyre for your vehicle type and for the purpose it is being used. This means fitting the correct tyres and ensuring that they are inflated to the manufacturer’s recommended pressure.
The legal minimum depth of the tread on your tyres is 1.6mm, across the central ¾ of the tread around the complete circumference of the tyre. (see below)

For safety, we strongly recommend that you replace your tyres before the legal limit is reached. Many vehicle manufacturers recommend replacing at 3mm. In wet weather, travelling at 50 mph with 1.6mm of tread, it takes an extra car length (8 metres) to stop than if your tread was 3mm.

It is also a legal requirement to ensure that tyres of different construction types are not not mixed on the same axle (the two main tyre types are radial and cross-ply). Please ask Roadwheel to check your tyres if you are unsure.

Mixing brands and patterns of the same construction type is permissible depending on the vehicle type and manufacturers recommendation. Check your vehicle’s handbook, or ask Roadwheel to look this up for you.