BMW 3 Series E30

since 1983-1994 release

Repair and operation of the car

- 1. Maintenance instruction
   1.1.2. Overall dimensions
   1.1.3. Driver's seat
   1.1.4. Dashboard
   1.1.5. Keys for the car equipped with an immobilizer
   1.1.6. Window regulators
   1.1.7. Safety cushions
   1.1.8. On-board computer
   1.1.9. Indexes
   1.1.10. Voltmeter
   1.1.11. Tachometer
   1.1.12. The counter of the total passable way
   1.1.13. Sound signal
   1.1.14. 3-staged automatic transmission
   1.1.15. 4-staged automatic transmission
   1.1.16. Mechanical transmission
   1.1.17. Emergency brake
   1.1.18. Car running in period
   1.1.19. Fuel
   1.1.20. Threefold catalytic converter
   1.1.21. Engine oil
   1.1.22. Brakes
   1.1.23. Rules of placement of freight in a luggage carrier
   1.1.24. Launch of the engine and driving
   1.1.25. Methods of driving
   1.1.26. Towage of the trailer
   1.1.27. Actions at refusal of launch of the engine
   1.1.28. A start order from the additional battery
   1.1.29. If the engine decayed during the movement
   1.1.30. Actions at an engine overheat
   1.1.31. Actions at a wheel puncture
   1.1.32. Rules of towing
   1.1.33. Check of pressure in tires
   1.1.34. Check of a state and replacement of tires
   1.1.35. Shift of wheels
   1.1.36. Installation of winter tires and chains
   1.1.37. Check of an external condition of the battery
   1.1.38. Battery charging
   1.1.39. Specifications
+ 2. Maintenance
+ 3. Engine
+ 4. Cooling system
+ 5. Heating and ventilation
+ 6. Fuel system
+ 7. Exhaust system
+ 8. Transmissions
+ 9. Coupling
+ 10. Brake system
+ 11. Running gear
+ 12. Body
+ 13. Electric equipment
+ 14. Useful tips


1.1.33. Check of pressure in tires


Pressure in tires (including a spare wheel) is checked 1 time in 2 weeks, but at least 1 time a month.

With a low pressure in tires controllability the car, profitability worsens, and also the probability of a rupture of the tire because of an overheat increases. Besides, with the lowered pressure consolidation of a board of the tire worsens. At big pressure drop deformation of a wheel and (or) stratification of the tire is possible.

With too high pressure depreciation decreases, controllability worsens, wear in the central part of a protector amplifies, danger of a rupture of a tire when driving on the bumpy road increases.

Follow the following rules:

      – check pressure only in cold tires, not less than 3 hours later after a trip, or after a trip for distance no more than 1,5 km;
      – it is not allowed to determine pressure by appearance of the tire, measure pressure by the manometer. Driving and comfort of a trip worsen even at change of pressure only upon several tenth shares of the atmosphere;
    – it is forbidden to reduce pressure in tires after a trip.