Tires seem to be a bit of a mystery to some people; mostly we understand only the basics and trust the tire store to pick the right type for us. For those of us that want to know a bit more this article may be of use.  Basically, picking the correct tire type for your vehicle involves you determining the size you need, the use you will put the vehicle too, and the road conditions you expect to drive in. This article will explain the basics in a step by step process. Tires seem to be a bit of a mystery to some people; mostly we understand only the basics and trust the tire store to pick the right type for us. For those of us that want to know a bit more this article may be of use.  Basically, picking the correct tire type for your vehicle involves you determining the size you need, the use you will put the vehicle too, and the road conditions you expect to drive in. This article will explain the basics in a step by step process.

1. Tire Size: What does P225/50 R14 mean?

The Letters:
Most tires have markings on them to denote their size, class and purpose. The most common type is denoted with the letter P, signifying basically that this tire type is primarily used on passenger vehicles. Passenger vehicles include cars, vans, SUV’s and light trucks. The letter T denotes a tire to be a temporary tire. This is used on spares that are those little doughnuts, or space saver spares. LT signifies a Light truck tire. Light truck tires are capable of carrying heavier cargo. Tires with a C are commercial. They are used on trucks and vans that carry heavy loads. There is also usually a second letter later in the series; this letter is usually an R, denoting that the tire has Radial construction. Other possibilities are D, B, and F. These three are very uncommon, denoting Diagonal, Belted, and Self-supporting run-flat.

The Numbers:
After the first letter there comes a series of numbers. These numbers denote the section width of the tire in millimeters. I.e. P (Passenger) 225. This number indicates that the tire is 225 millimeters across. Following this first number you will find a second number. This number denotes the sidewall height/profile as a ratio against the section width. Following the second letter identifier you will find the Tire and Wheel diameter information, expressed in inches for some strange reason. This is a number, usually between 8 and 28.
So if you see P225/50R14 you know your tire is a passenger rated tire that is 225 mm across, a sidewall of 112.5mm. It has a radial construction and fits a 14” rim.
Have a look at your existing tires; take note of the type and size!

2. The use you will put your vehicle too:

Basically if you drive a passenger vehicle buy P rated tires. If you haul heavy goods get either a LT or C rated tire. If you are into heavy off-roading look for specialty tires for your purpose. Snow, Mud, rock-climbing and ice racing all have specialty tires associated with them.

3. What are the Conditions you will be driving in: Do you need summer, winter, or all-season tires?

Ask yourself what are the worst road conditions you will face with your vehicle and purchase accordingly. Most people find it of benefit (and long-term cost savings) to have two sets of tires. Usually one set of snow (winter) tires and one set of summers. All-seasons are only really recommended for people that live in climates where you don’t really ever get a good winter. Personally I consider all-seasons a bit of a waste for my situation, generally they are more expensive than summer tires and don’t provide the winter grip I need. Also if I have two sets, (both being on rims) my tires seem to last longer and I can have a convenient time to alternate their position on the vehicle (Rotate)

Additional Tire Tips:

• Have your tires balanced periodically. (at least once a year) This ensures better mileage and even wear patterns, extending the life of your tires.
• Make sure your lug nuts are tightened appropriately.
• Inspect your tires for damage periodically, look for bulges and cuts.
• Make sure you have enough tread left.
• Consider spiked tires for serious winter driving
• Don’t buy cheap, crappy tires. They will cost you more in the long run because they wear out much faster.