You should not drive on a slashed tire any farther than necessary to reach a safe place to pull over, ideally just a few hundred yards. Driving on a flat or slashed tire, even for a short distance at low speed, will likely ruin the tire completely and can cause significant, expensive damage to your wheel (rim), brakes, alignment, and suspension system.
There's a popular rumor known as the “3-tire rule," that if only three of your four tires are slashed, insurance won't cover it. This is just not true - vandalism is vandalism.
If the cut in the tire sidewall is only a few millimeters deep, it can still be driven on.
The "3% tire rule" is a guideline for replacing tires, stating that the new tire's overall diameter should not vary more than ±3% from the original to maintain speedometer accuracy, proper handling, and function of safety systems like ABS and traction control. Going outside this range can cause speedometer errors, clearance issues, and strain on the engine and transmission, while a separate (and false) "3-tire rule" rumor suggests insurance won't cover vandalism if only three tires are damaged.
The 7 7 rule for tires provides a simple temperature guideline for timing your seasonal tire changes. Install winter tires when daily temperatures drop to 7°C (45°F) or below for seven consecutive days. Remove them in spring after seven straight days above 7°C.
The Rule of 105 states that the rim must be at least 105% the width of the tire if you have any chance of re-capturing airflow from the tire and controlling it or smoothing it. One of the most interesting aspects of the Rule of 105 is that before 2001, nobody was tunnel testing with 21 or 23mm tires.
There's a common misconception that insurance companies won't cover three slashed tires but will cover four slashed tires instead. The truth is that you're covered for any number of slashed tires, as long as you have the right coverage.
You don't know the depth of your tyre tread? Use the 25 cent trick! Insert a 25 cent piece into the tire's grooves with the nose of the caribou facing downward. If the caribou's nose isn't visible, it means the depth is superior to 6/32 of an inch.
The legal limit of 1.6mm is reached when the tyre is worn to the level of the tread wear indicators in the main groove — as soon as this happens, the tyre should be replaced.
Unless you can stop air from escaping, a tire with a slow leak will always have low tire pressure after some time. Consistently low tire pressure has real consequences, because when tires have low air, they can overheat and even cause a tire blowout.
If the cut is deep, it may have damaged the carcass ply that lies under the rubber and helps contain the pressure. If the carcass ply is damaged, there is a risk of sudden pressure loss. In this case, the tyre is not repairable and needs to be replaced.
Driving on cracked tires can be extremely dangerous, especially during long trips. Cracks can lead to blowouts, decreased traction, and poor handling. This not only puts you and your passengers at risk but also other road users.
Comprehensive Claims
Claims for theft, vandalism, hail damage, etc. can increase rates if multiple claims are filed within a short period. If these types of claims are common in your area (e.g., high crime rates or frequent severe weather), insurers may adjust rates to reflect the elevated risk.
The penny test provides a reliable, quick estimate of tread depth, though it is not as precise as professional measurements. How often should I perform the penny test? It is recommended to check your tire tread using the penny test at least once a month and before long journeys.
Can you claim for 3 slashed tyres? Yes, you may be able to claim on your insurance for three slashed tyres. Particularly if all three were damaged in the same incident. However, it's important to check your insurance policy to see what your coverage limits are for this type of damage.
If you leave them on too late, your winter tires will degrade quickly. So, when is the right time to swap? The rule of thumb is 7-for-7: wait until there are seven consistent days at 7 degrees Celsius.
The 20p tyre test is really easy to do: just place a 20p coin in the main grooves of your tyre. If you can see the outer band of the 20p coin when it's placed in the tyre, then the tyres may be dangerous and illegal and should be inspected by a tyre professional.
If your car gets vandalized, comprehensive insurance can cover the damage after you've paid your deductible. It often covers several types of vandalism, including: Slashed tires. Scratched or keyed doors.
If you take out a specialist car tyre insurance policy, you'll get coverage against accidental damage, such as a puncture from road debris, vandalism or any sudden failures, all of which you would ordinarily have to pay out of pocket.
Your insurer is expected to pay for 50% of the replacement cost, if your car and any of its parts like tyres and tubes suffer damages. However, your insurer is not responsible to pay for the damages caused to the tyres and tubes, in case the car is not damaged.
CHECKING TIRE TREAD Here's how to check your tread with a Canadian quarter: Insert a 25-cent coin in one of the grooves with the caribou facing down. If you see the tip of its nose, it means the tread depth is less than 6/32” — so the tire probably won't last another 10,000 km. Need new tires? Call us!
Consistent Performance: Replacing all four tires ensures uniform tread depth, providing better grip and handling. This is particularly important for all-wheel-drive and four-wheel-drive vehicles, where mismatched tire tread can lead to uneven wear on the drivetrain.