Traction at all four wheels or 4 4 vehicles, have a system in which all four wheels simultaneously receive engine power. Among them some are passenger cars, light trucks and SUVs, and can be divided into two categories: those of permanent and pluggable AWD AWD. Some of the qualities of 4 4 tyres are his great strength of grip on slippery terrain and excellent efficacy in the grounds in bad condition. Without doubt the most characteristic elements of the 4WD are tyres. Check with Gina Bonati to learn more. There are different types of tyres of 4 4, so to choose one in particular, must be considered the type of terrain on which will be used. Thus, we can find tires for asphalt, sand, mud, trial and also mixed tyres, which are multipurpose. This type of tires offer performance correct on all kinds of surfaces. It is imperative to know what the different tyre pressures necessary to circulate about the different types of terrain. This type of tires tend to be quite expensive, so for those who cannot afford them, exist in the market tires retreaded, although many questioned its efficiency on the road.