JJ Tyre Doctor

19/06/2018

26/12/2015

BENZ 540 K

29/10/2015

"JJ TYRE DOCTOR" ATTENDS WHEEL ALIGNMENT FOR BMW AND BENZ CARS THIS WEEK.,

10/10/2015

know your car symbles

22/08/2015

VINTAGE-BENZ,AUDI,FIAT CARS

22/08/2015

21/08/2015

Factors affecting tyre performance

The factors which influence tyre life:
Inflation Pressure Tyre Care & Maintainence
The science and the technology that has gone into producing even the best quality of tyre will go waste if the tyres are not inflated to the recommended pressure – Pressure comensurating to the load carried. The best performance of tyres can only be achieved when the tyre is inflated to the designated pressure based on the load per tyre.
“Under inflation” or “Over inflation” on the tyre tend to impact tyre life, vehicle handling and safety. There are two factors with weight distribution of the vehicle. One is contact patch and other linked to the tyre wear. This result in heat buildup/tyre temperature and thus loss of tyre life, premature tyre removals, increased rolling resistance and fuel consumption.
“Under Inflation” is more common than Over inflation. Tyre users are not always conscious about maintaining or matching tyre pressure to the loads carried.
In pneumatic tyre the “Air carries the load”. The best tyre performance and lower tyre CPKM are obtained by maintaining correct tyre inflation pressure.
It is important to remember that the total weight (GVW) carried may not exceed the registered laden weight (RLW) or vehicle passing weight, but one side of the truck or one axle may be severely overloaded due to improper distribution of the load in the pay load platform or loading area.
Improper load distribution overloads the tyre(s). This condition combines with high speed , long hauls and load transfers result in tyres wearing fast and premature removal of tyres
Loads and Loading practices

It is important to remember that even one trip of the truck, with improper load distribution may cause irreversible damage to the tyres.
Speed
Excessive high speeds results in increased tyre running temperature. As the rubber gets heated up its modulus (stiffness) gets reduced.
Rubber being a good non conductor of heat the residual heat is retained causing increased tyre wear and separation of components.
Wheel Alignment
A vehicle is said to be properly align when all the steering and suspension components and set as per the vehicle manufacturer and when the tyre wheel assembly are running straight and true.
Proper alignment is necessary for perfect vehicle control, uniform and even tyre wear and safety.
Recommended to get the vehicle alignment checked and corrected as per vehicle owner’s manual as soon as tyre are wearing unevenly or ride handling problems(vibrations, pulling to one side etc).
Wheel Balancing
A wheel which is not properly balanced may setup vibrations which can affect steering control. Wheels, tyres and tubes are usually checked for balance before leaving factory.
This balance is achieved by positioning weights on the wheel to counterbalance heavy spots on the tyre wheel assembly.
Properly balanced tyres are important for driving comfort and long tyre life.
Tyres should be balanced when they are mounted on the wheels for the first time or when they are removed for repair or periodically as per vehicle manufacturer’s recommendations.
Tyre rotation

Rotation of tyre in a vehicle is recommended for a uniform tyre tread wear on all wheel position to achieve optimum tyre life.
It is prefferred to rotate tyres as per vehicle manufacturers recommendation or in case of any uneven tyre wear noticed.
It is suggested to check wheel alignment, wheel balance and suspension before the tyres are rotated. Rotation patterns /pictures to be incorporated.
Road Conditions
Vehicle /tyre operating conditions which significantly influence tyre life both in terms of new tyre life and structural durability.
Rough/abbrrasive road surface
Paved road
Straight road
Broken up roads
Hilly windings roads
Unmade country roads
Driving habits
Careful driving habits will ensure optimum tyre life, unavoidable damages besides avoiding serious road accidents. Some of the habits which cause serious damages to tyre and road accidents are:
Over speeding
Speeding over pot holes, stone etc.
Quick starts and sudden stops
Riding over road divider and other obstacles
Sharp turns at high speeds
Hitting the road, curbs, objects etc.
Running on improperly inflated tyres
Seasonal Effects
Climatic and whether conditions in our country varies widely from region to region. Dry and extremely hot during summer, extreme cold during winter and rains during monsoon.
This variation in climatic conditions influence tyre life in terms of mileage and structural durability.
Do's & Dont's
Tyre Pressure checks including the spare tyre must be done regularly at least once in two weeks.
Tyre pressure should be checked using an accurate pressure gauge.
Tyre pressure should be checked when tyres are cold.
Under inflation and over inflation will cause rapid tread wear and premature tyre failures.
Tyre pressure should always be maintained as per the vehicle manufacturers recommendations, mentioned at information placard, at door, owners manual

21/08/2015

BALANCING
guarantee a smooth ride and to get the most out of your tyres.
The direction and angle at which tyres are set are both equally important. Wheel alignment or 'tracking' involves checking the direction and angle against vehicle manufacturers' specifications. These are often described as toe in, toe out, positive camber or negative camber.
"Toe" refers to whether the front of the tyres are closer or further apart than the rear of the tyres. Different types of vehicles need different toe settings to allow for the way wheels pull either towards each other or apart.
"Camber" is the inward or outward tilt of a tyre. The camber is set by the vehicle manufacturer, and can be affected by potholes in the road and may need to be adjusted periodically.
Correct wheel alignment is achieved by adjusting a car’s suspension and steering components to ensure the wheels are perfectly aligned to deliver the least wear on the tyres

21/08/2015

The manufacturer of your vehicle specifies the suitable pressure to be maintained and is measured in PSI or BAR pressure. It is important to check tyre pressure regularly. Air from a tyre generally escapes at the rate of up to 2 pounds of air every month. Loss of air pressure from a tyre is pronounced during warm weather, so more regular checks are needed when temperatures rise.
Benefits of correct air pressure:
Safety: Tyres that are under inflated can overheat; and over inflated tyres can lead to poor vehicle handling on the road. Economy: Over or under inflated tyres suffer more damage than those with the correct pressure and need to be replaced more frequently. Vehicles with under-inflated tyres have increased rolling resistance and require more fuel to maintain the same speed.Environment: Correct tyre pressures help maintain optimum fuel efficiency. This can equate to lower carbon dioxide (CO2) emissions from your vehicle than those from a vehicle with incorrect tyre pressure. Thus by maintaining the recommended air pressure in your tyres you contribute towards a cleaner environment.
Role of Valves:
Valves help maintain tyre pressure and permit air to be added or removed.The valve in your wheel is a small but very important part of your vehicle as far as safety and tyre life is concerned. It holds the pressure inside the tyre assembly and is the access point to adjust your tyre pressure. A valve cap in good condition is also essential as it provides a secondary seal and prevents dirt from getting inside. It is recommended to have the valves replaced every time your tyres are changed

21/08/2015

Special Driving Skills
Under emergency
1. Principles to follow in an emergency
When faced with an emergency driving situation, the golden rule is to remain calm and not to panic. These will help you make rational, calm decisions when every second counts.

You main priority is to save lives. If an accident is unavoidable, take priority actions that ensure the safety of human life. Cars can be replaced, people can't.
Steer before braking - try and brake in a straight line if possible.
If you are driving at high speed when the emergency occurs, try to avoid sudden steering.
You can steer far more effectively at slower speeds, and reduce the impact of the collision. So aim to slow down as much as possible.
Turn on your hazard lights immediately.
Remember:
Sudden steering at high speed may result in accidents that can otherwise be avoided. It may cause the vehicle to skid into a collision or even turn over.
2. Responding to a puncture while moving
Keep the direction of the car as straight as possible.
Don’t brake too hard. Brake slowly to lower the speed.
Shift to a lower gear quickly, and use the engine to slow down.
Bring the car to a halt in a safe place.
Remember:
Always keep both hands on the steering wheel and grip firmly. This may save your life in case of a sudden rapid deflation.
3. Emergency measures during loss of steering control
When you lose control of your steering, the following actions should be taken:

Release the accelerator pedal gently.
Steer the car in the direction where the back of the car is sliding.
Do not use the hand brake when the speed is very high.
Shift to lower gear quickly and use the engine to slow down.
Turn on the hazard lights as quickly as you can.
Park on a safe spot and set up warning signs.
Apply hand brake.
4. Emergency measures when the brake doesn’t work
If your brakes stop working, hold the steering wheel more firmly. If this happens before entering a bend, try and control the direction first. Then try to slow down. Apply the hand brake if the speed is below 20 mph. Then shift quickly to a lower gear.

Shift down gears step by step to slow down.
Turn on the emergency alarm lights.
Use the handbrake to stop the car if the speed is below 20 mph.
Use slopes or obstacles to help stop the car.
If your brake stops working when going up a slope, shift quickly to lower gear, then use the handbrake to park the car.
If available, park in an emergency parking lane, lay by or hard shoulder. If not, then anywhere away from fast traffic.
Remember:
Test brakes before your journey. Always test your brakes when you first start down a steep hill or if you have driven through standing wa