Should You Replace 2 or 4 Tires?
2 Answers
In practical terms, it's best to replace all four tires when economically feasible. Typically, at least two tires on the same axle should be replaced together. Here are the details: 1. Replacing just one tire can result in different tread patterns on either side of the vehicle, increasing fuel consumption and creating potential safety hazards. For instance, during sharp turns or sudden braking, the vehicle may tilt, leading to accidents. 2. Replacing two tires together ensures similar tread patterns and wear levels on both sides, significantly improving driving stability. This also substantially reduces fuel consumption. If only one tire must be replaced, ensure the new tire's tread groove depth closely matches the other tire on the same axle to prevent issues like vehicle pulling to one side.
Tire replacement really depends on the specific situation. I recommend changing all four tires if possible, rather than saving money by only replacing two, especially for four-wheel-drive vehicles where all four tires must be replaced simultaneously. For front-wheel-drive cars, if the old tires aren’t severely worn, you can replace just the two front tires with new ones. However, for rear-wheel-drive cars, new tires should be installed on the rear wheels to prevent fishtailing. Checking the wear on old tires is crucial—if the tread depth difference exceeds 2mm or the tires are over 5 years old, forcing a two-tire replacement can cause braking issues like pulling to one side. Last time I replaced my tires, I noticed severe uneven wear on the right front tire. The mechanic said it was due to suspension problems, and a full wheel alignment was needed to fix it completely.
