![]() Beadlock rims block the tyre bead on the rim. If you often ride at very low pressure in mud or sand, be interested in the “beadlock” system that will prevent the wheel from coming off the road. They can withstand a rather important shock but for very violent shocks, they will be irreparable. Aluminum rims disperse heat better, are lighter.If the steel rims (also known as taule steel rims) are more fragile, with a hammer and a good hand, they can be repaired quite easily.You will hardly make this car a vehicle for overlanding. If your car is equipped with 18-inch rims as standard, you have a real highway 4×4 with nice brake calipers. We will therefore use 15 or 16 inch rims, 17 inches being the absolute limit. You need a better ratio for the tire than for the rim. Your first shock absorbers are your tires. To calculate the size of his tire in inches, you can use this site: įinally, here is a link for load index and speed index matches: Īvoid “low-profile” rims for off-roading. For an index Q, the maximum speed is 160km/h. Q : corresponds to the speed index and indicates the maximum speed at which a tire is certified to be able to support a load safely.113 : corresponds to the load index. Here, the maximum load the tire can support when inflated to maximum pressure is 1150 kg (index 113).R16 : corresponds to the inside diameter of the tire in inches (or the rim diameter).The higher the ratio, the higher the height of the tire. In our example, the sidewall height equals 75% of the width of the tire. It is a relation in % between the height of the sidewall and the section width of the tyre. 75 : corresponds to the height of the tire.285 : corresponds to the width of the tyre in mm.We will take the example of the tires equipped on our 4×4: 285/75 R16 113 Q How to read the size of a tire and get its size in inches? Also be careful with modifications that could have serious consequences in case of an accident with your insurer, you may not be covered.Ībove 35 inches, the 4×4 requires a lot of modifications. Don’t forget that all your modifications must remain legal and conform to the legislation of your country. On the road, the car will be 2.5 cm taller with a 33-inch tire (add 5 cm for the lift kit, which will allow you to install larger tires) but in reality, in soft sand or deep mud, you will lower the tire pressure significantly and the tire will “regain” its original size or get closer to it.īe careful, a 33-inch tire on a Toyota Hilux for example, requires some modifications: a 4 or 5 cm lift kit and a few blows with a mallet so that the wheels do not touch. Larger tires help maintain ground clearance (especially at low pressure). It is advisable to have 32.8 inch or 33 inch tires for 4×4 travel. Normally, your vehicle will be equipped with approximately 31-inch tires. If your routes are mainly on asphalt roads or well-maintained tracks, lean towards A/T tires with increased longevity. The M/T tire will therefore remain the best tire for all off-road terrain. ![]() Don’t forget that our advice is for travelers, not Dakar riders. In fact, the studs will tend to “dig” into the sand. There is still the question of sand: if the M/T’s studs are not a real advantage, it will still be chosen to ride at very low pressure because of its three plies and sturdy flanks. The blanks are better protected which will reduce the risk of punctures. It’s true that it’s noisier on the road and its studs are a disadvantage when braking and cornering on the road. In addition to the advantage of the plies, the M/T tire has large studs that evacuate mud better, cling better to rocks and do not let gravel stick to the tire. The plies are layers of Kevlar, nylon or polyester synthetic fabric covering the entire carcass.įor traveling, only A/T and M/T type tires are recommended. They usually have 3 plies when the A/T tires have only 2 plies. Mud tires called M/T for Mud Terrain will be 80% off-road and 20% road.An off-road tire generally called A/T for All-Terrain Tyre will be 50% road and 50% off-road.It is therefore strongly advised to change them when traveling with a 4×4. Road tires called H/T for Highway-Terrain are generally the original equipment tires on your 4×4.Pour décrire des pneus 4×4, il est plus juste de les représenter sous un pourcentage off-road / on-road. ![]()
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