Can a spare tire still be used after eight years?
2 Answers
A spare tire that has been stored for eight years should not be used. Generally, tires must be replaced after more than 5 years or 80,000 kilometers. Whichever comes first between "5 years" and "80,000 kilometers" indicates that the tire's service life has expired and replacement is necessary. Here is additional information: 1. Since tires are rubber products, prolonged storage can also lead to aging. Therefore, regardless of whether the tire appears brand new, it should be replaced after 5 years of use. Do not artificially extend its "service" life just because it hasn't been used. 2. After the rubber of a tire ages, the cohesion between molecules deteriorates, and the tensile strength naturally decreases. Although the tread has steel belts and the sidewalls have ply layers that provide some reinforcement, the overall strength of the tire is significantly reduced. Driving on normal flat roads might not pose a problem, but once subjected to impacts like hitting potholes or running over stones, the tire is prone to blowouts. Abnormal tire pressure also increases the likelihood of blowouts.
As someone who frequently deals with car maintenance, I've found that a spare tire left unused for eight years is best avoided. Over time, the rubber naturally degrades, becoming hard and brittle. After eight years, it may already have small cracks or deformations, directly affecting its grip and load-bearing capacity. The air pressure is likely mostly lost after such a long time, and even if you manage to refill it, it may not hold up well. During an emergency on the highway, it could suddenly lose air or blow out, creating even greater danger. I recall a car owner who had an accident due to the risky use of an old spare tire, so safety is no trivial matter. I recommend thoroughly checking the tire's sidewalls for bulges, cracks, or noticeable wear. If there are any abnormalities, it's better to just replace it with a new spare tire. Nowadays, tires are reasonably priced, and investing in safety is the most worthwhile. Don't risk it to save a little money—ensure peace of mind for yourself and your family when traveling.
