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| 1) Can we mount any type of tyres? |
| 2) Why should I mount new tyres (or less worn tyres) in the rear rather than in the front? |
| 3) How can I limit wear and increase safety at the same time? |
| 4) What does DEMO/DEMONTAGE mean? |
| 5) What does G1 mean? |
| 6) What is the difference between DUNLOP SP 2000 and SP 2000 E? |
| 7) What does AL mean? |
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| 1) Can we mount any type of tyres? |
The answer is NO. There are certain legal conditions.
The tyres on the same axle (front or back) must have the same commercial and technical characteristics.
Since October 2000 in France, the load and speed indexes of car tyres can be verified.
In France, as of January 1, 2003, the tyres on the same axle must have the same symmetrical characteristics (brand, design, and degree of wear). Consequently we advise you to always mount identical tyres. The technical characteristics of the 4 tyres must be equal to or greater than those specified by the manufacturer. If these values are lower, you are at risk of breaking the law, having problems with your maintenance checkup, or loosing insurance coverage in case of an accident. |
| 2) Why should I mount new tyres (or less worn tyres) in the rear rather than in the front? |
The driver has little control over loss of rear wheel grip.
By mounting new tyres in the back, you even out grip between the two axles, which increases safety. |
- the front axle is controlled by your use of the steering wheel, even if grip is weaker,
- the new tyres on the rear axle allow for optimal traction. |
| 3) How can I limit wear and increase safety at the same time? |
| Certain parts of the front and rear axle systems require adjustment, for example when they are replaced (shocks, ball joints, etc.). This is referred to as the geometry of the axle system or simply "parallelism". With a properly adjusted parallelism, your vehicle will react appropriately under all circumstances. The geometry should be adjusted if you notice: |
- abnormal wear on the outer or inner edges of your tyres,
- a tendancy to pull to one side during acceleration and to the other during braking,
- a tendancy to pull to the right or left at steady speeds on flat ground,
- a certain stiffness in the steering,
- the steering wheel is not correctly centred,
-after a curve, the wheels do not rapidly return to a forward position. |
Be aware that defective components or a violent impact that modifies the initial configuration (hitting the sidewalk, for example) are always what require adjustments in the geometry.
Poorly adjusted geometry will cause your car to react abnormally and lead to accelerated and irregular tyre wear. |
| 4) What does DEMO/DEMONTAGE mean? |
| DEMO means that the tyre was initially mounted on a vehicle then dismounted in the factory by professionals. As a result, the tyre has been used over a few feet (6-9 ft maximum.) The tyre is considered as NEW. |
| 5) What does G1 mean? |
| A G1 tyre differs in outside diameter or tread width from a tyre lacking this marking. This accounts for the difference in price between the two tyres. |
| 6) What is the difference between DUNLOP SP 2000 and SP 2000 E? |
| SP 2000 E is a reference code provided by Dunlop, not to be confused with the SP 2000. The evolution of this product is further indicated by an "E". |
| 7) What does AL mean? |
AL is the lettering that distinguishes the least recent of 2 tyre models.
Ex: GSD2 AL and GSD2. The model GSD2 is more recent than the model GSD2 AL. |
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