What fuel is best for my Chev Malibu, 2003. I live
Standard 87 octane is all that car requires. You will gain no benefit from using mid or top grade fuel.
Most passenger car tires are run between 32 and 35 psi, regardless of season. You can look at the side of the tire to find what the max cold psi pressure is. You will normally find that it is 35psi.
As for summer/winter tires. If the wobble only happens when the snow tires are installed, and not with the summer tires, that obviously eliminates the car as being the problem. Do you have your summer and winter tires mounted on different sets of wheels, or do you swap the tires every season on the same wheels?
If they are on different sets of wheels, then the winter tires are out of balance, have some sort of damage to the carcass of the tires, or you have a bent wheel. If you are using the same wheels and swapping the tires every season, then you need to have your winter tires balanced and see if it solves the problem.
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