Can 215 60 R15 tires substitute 215 70 R15 tires?

Answer 1

Although manufactures will advise you to use the same size tire, the above question should be an acceptable solution. Tire size codes are actual measurements. The first number indicates how wide the tire is, the second how tall it is, and the R value is the size of your rim. To select a tire, the R value becomes the most important as its the rim's "shoe size". Most rims can accept a small range in width usually + or - 10. Then the height of the tire is usually only confined to the amount of space your car will allow. Here is a tip, higher tires are better for off-road applications while lower tires are better for aerodynamics in sportier cars. Wider tires will provide you with more grip. Wider tires tend to be more expensive especially when you get thin or extra tall tires.