Gatine-AUTO is a member of Méga Pneu, one of the biggest tire dealers in all of Québec. Purchase your tires in utmost confidence thanks to our specialized consultants in both the sale and installation of tires. Whether you're looking for winter or summer tires, Gatine-AUTO offers you the best brand names.
Choosing the right dimensions
The dimension of tires that work best for your vehicle are those that came with it. This information is found in your ownership manual or on a sticker which is usually placed on the inside of the drivers side door. This sticker will also contain information regarding recommended tire pressure for the vehicle.
It is possible to change the size of your tires for those that are wider or narrower in order to obtain an advantage for winter traction or for performance during the summertime. These changes may even affect the dimension of the wheels. In any case, it is essential that you respect the exterior diameter of the exterior of the wheel so as not to effect systems such as the speedometer, the ABS brakes or the fuel injectors. In other words, while it is possible to change tire size in order to gain performance advantages, it is a wise idea to first consult us here at Gatine-AUTO.
Combinations of tires.
To insure both maximal performance and safety, the tires on each of the 4 wheels should have the same dimensions, brand and model. If it is necessary to combine different tires, some rules apply:
How to "read" a tire
On many brands and models of tires, the information with regards to the dimensions and capacity of a tire are usually found on the side. Here is an example of the different markings on the side of the tire: 185/70 R 14 88H
185 corresponds to the width of a tire in millimetres. The higher the number shown, the wider the tire.
70 establishes the ratio between the height of the tire and the width of the tire. In this case, the height of the tire is 70% of the width. The lower the number shown, the lower the profile of the tire.
R is a reference to the type of tire: R = radial.
14 is the diameter of the inside of the tire, shown in inches. It is essential that it match the diameter of the wheel on which is is being mounted.
88 indicates the weight that the tire can support at it's maximum inflation in PSI; in this case, 560kg
H indicates the maximum speed at which it can be used; in this case, the tire has a maximum speed of 210 km/h
The equilibration of a wheel represents a state where a wheel and tire spin in a way that their weight is evenly distributed. A wheel-tire assembly where an equilibration is incorrect results in floating or a lateral vibration, vibration in the seats, floor, or steering column. These vibrations can be so severe that some parts of the vehicle may let go and break. Lack of equilibration can also result in premature wear on the tires, decreased fuel economy and can effect the direction of the vehicle. It can also cause suspension damage and, ultimately, is very irritating for the driver.
Equilibration of a wheel should be performed every 20,000 km and every time a tire is repared, reinstalled or replaced. Also, whenever a vibration or uneven tire wear is noted, it is a good idea to check if the tires are parallel via an alignment.
Tire pressure has an important influence on a tires safety, performance, longevity, wear, traction and even the fuel economy of a vehicle.
Contrary to popular belief, decreasing a tire's pressure does not increase traction. In fact, low tire pressure can increase friction of the tire, increasing its temperature and could lead to the blowout of the tire, which could prove dangerous. The tire is behaving as if there is increased weight on it, leading to premature wear and tear. A tire pressure too high for the tire renders the tires more vulnerable to damage caused by bumps and cracks in the road.
The recommended tire pressure for the vehicle is indicated in the owner's manual or on the sticker on the inside of the drivers side door. The maximum tire pressure indicated on the side of the tire itself must be respected.
Tires can lose up to 2psi per month during normal driving conditions, as well as 1psi for every degree below 6°C. Visual inspection shouldn't be relied upon and it is recommended that a tire pressure gauge be used. For optimal usage, check the tire pressure (including the tire pressure of the spare) at least once per month. Tire pressure should also be checked before a long trip and before transporting a heavy load. In order to obtain an accurate measurement, tire pressure should be checked when the tires are cold.
Mandatory winter tires: A matter of safety
Due to a recent modification of the Code of road safety, drivers must now equip their vehicle with winter tires from the 15th of December to the 15th of March.
In Québec, there is a risk of freezing from the start of October. Winter tires can be installed when the temperature hits 7°C without any risk. Four good reasons for using winter tires are:
*source: Transport Québec