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Tyre Ratings & Best Tyres for Road Use — With Real Vehicle Examples

1. Tyre Ratings: What to Look For These ratings appear on the tyre sidewall and help you judge quality, safety, and performance. Treadwear Rating This tells you how long a tyre is likely to last. The higher the number, the longer it should last. A treadwear of 400 means the tyre will last about 4 times longer than a baseline test tyre. Traction Rating This shows how well the tyre grips on wet roads. The grades are: AA (excellent), A (good), B (moderate), and C (poor). Temperature Rating This tells you how well the tyre resists heat. High heat resistance means the tyre won’t overheat and burst at high speeds. Grades: A (best), B, and C. Load Index This number shows how much weight one tyre can safely carry. You must match this to your vehicle's weight class. Speed Rating This tells you the maximum speed the tyre can handle safely. For example, H = 210 km/h, T = 190 km/h, etc. 2. Best Tyres for Personal Vehicles (By Model) a. Toyota Corolla / Honda Civic Recommended Tyre: Michelin Pr...
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FEELER GAUGE: know your tool


This consists of a number of hardened and tempered polished and flexible, steel blades.

there thickness varies from about 0.03mm to 0.5mm. A set does not include every intermediate size but the selection is so arranged that by combining different blades all the size normally required are available.

the blades are fastened into a steel frame by a rivet or a screw and one usually about 100mm long and 13mm wide.Their free ends are often tempered don in width to about 6mm. The thickness of each blade in millimetre is engraved upon it.

Functions of a feeler gauge

  • it is used to set accurately the size of small gaps or clearance between gaps.
  • its used to set valve clearance,contact breaker, piston ring gap and for checking crankshaft end float.
  • it is used for checking the piston to cylinder bore clearance in engines.
  • also used to check for sparking plug points on spark plug.

Safety precautions taken hen using feeler gauge.
  • Keep the blades lightly oiled and free from water and rust.
  • Always use the minimum possible numbers of blade.
  • Avoid the trapping and twisting of the blades.
  • Never exceed alight but firm feel or grip on the blade.

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Location: Kampala, Uganda

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