Contents: Tire designations ↓ Wheel replacement ↓ Tire running-in ↓ Tire storage ↓ Wheel balancing ↓ Anti-skid chains ↓ Checking tire pressure ↓ Checking the tire profile ↓
Tire designations
Please note: If there is an M+S designation between data 14 and 89, these are winter profile tyres.
Decoding of the designation 195/70 HR 14 89 H
| 195 | tire width in mm |
| 70 | height to width ratio of the profile in % (normal height to width ratio is 82%) |
| N | letter symbol of the maximum permissible speed |
| R | radial tires |
| 14 | rim diameter in inches |
| 89 | load capacity characteristic |
| ABOUT | 160 km/h |
| S | 180 km/h |
| T | 190 km/h |
| N | 210 km/h |
| V | 240 km/h |
| ZR | over 240 km/h |
Wheel replacement
When changing wheels, it is not advisable to change the direction of rotation of the tire, as their repeated running-in causes increased wear. If the front tires are noticeably worn, it is recommended to change them with the rear tires. When changing tires, always install the less worn tires in front.
[The material was taken from a resource: www.ToyotaMan.ru]
When changing wheels, be careful not to damage the paint finish on light alloy wheels.
Tighten the wheel mounting bolts in a crisscross pattern in several passes.
Tire running-in
New tires have a smooth outer surface, so it is necessary to break in the tires. The initial wear during the break-in makes the tire rougher.
During the first 200 km of driving, the car should be driven very carefully, especially on wet surfaces.
Tire storage
Tires should be stored in a cool, dark, dry and ventilated area.
Before removing the wheels, increase the tire pressure by 0.3–0.5 bar.
Wheel balancing
Wheel balancing is performed to compensate for uneven weight distribution. When driving, imbalance manifests itself as vibration, which is transmitted to the steering wheel. Vibration of the steering wheel from wheel imbalance manifests itself in a certain speed range and disappears when the speed decreases or increases. Wheel imbalance can lead to damage to the hinges, steering and shock absorbers. It is necessary to balance the wheels after 20,000 km of the car's mileage or after any tire repair.
Anti-skid chains
The use of anti-skid chains is permitted only on the drive wheels. The protrusion of the chain above the surface and on the inner side of the wheel is allowed to be no more than 15 mm. The maximum speed with chains is 50 km/h. On roads without ice, snow and mud, the chains must be removed.
Checking tire pressure
Check pressure only when tires are cold.
Check frequency: once a month or when servicing the vehicle.
It is advisable to check the pressure before long trips, as this is when the maximum temperature load on the tires occurs. When driving long distances at high speed with reduced tire pressure, more energy is spent on tire deformation, as a result of which it overheats and the profile layer may separate or even burst. Also, with reduced pressure, fuel consumption increases.
Checking the tire profile
Attention! Tires can be used until the profile depth reaches 1.6 mm, i.e. the profile grooves must have a depth of at least 1.6 mm over the entire surface of the tire. However, for safety reasons, it is recommended to change tires at a profile depth of 3 mm.
Please note: M+S tyres have sufficient grip on snow with a tread depth of at least 4 mm.
Warning! The tire should be examined for cuts and their depth should be determined. If the cuts reach the cord, the steel cord will corrode from penetrating moisture.
Intensive wear of tires is caused by a sporty driving style, intense acceleration and sharp braking.