How to Read a Tire Sidewall
- Metric, or tire type, defines the proper use of the tire.
- Tire width is the width of the tire measured in mm from sidewall to sidewall.
- Aspect ratio is the ratio of the height of the tire’s cross-section to its width.
- Construction tells you how the layers of the tire were put together.
- 1 How do I know what tires I need?
- 2 What were the original tires on my car?
- 3 How do I know what size my tire rims are?
- 4 Can I put different size tires on my car?
- 5 Is the penny test for tires accurate?
- 6 How long do tires last on average?
- 7 How much is 4 new tires?
- 8 When should you replace tires on stock?
- 9 Why are OEM tires so bad?
- 10 Are OEM tires the same as aftermarket?
How do I know what tires I need?
The two-digit number after the slash mark in a tire size is the aspect ratio. For example, in a size P215/65 R15 tire, the 65 means that the height is equal to 65% of the tire’s width. The bigger the aspect ratio, the bigger the tire’s sidewall will be.
What were the original tires on my car?
Simply put, Original Equipment (or OE) tires are the tires that a vehicle was originally equipped with from the factory. For example, Michelin develops spec versions of some of their performance tires to be an ideal match with select Porsche 911 models. There can be several OE tires available for a specific vehicle.
How do I know what size my tire rims are?
How to Match Tires to the Rim Size
- Set the rim upright as if it were mounted on a vehicle.
- Measure the width of the rim from the inside of one bead to the inside of the other bead.
- Multiply the width in inches by 25.4 (the number of millimeters per inch).
- Measure the overall height of the rim and round down for the diameter.
Can I put different size tires on my car?
Long story short: Yes, it is a problem to have two tires of different sizes on the front (or back) of your car. Having two different-sized tires on the same axle is generally not a good thing. Sometimes, people choose to put larger tires on the rear axle of their vehicle for handling reasons, cosmetic reasons, etc.
Is the penny test for tires accurate?
One easy way is the penny test. Simply insert a penny into your tire’s tread groove with Lincoln’s head upside down and facing you. If you can see all of Lincoln’s head, your tread depth is less than 2/32 inch and it’s time to replace your tires.
How long do tires last on average?
three to four years
How much is 4 new tires?
According to recent reviews, Angie’s List members report paying an average cost of $637 to replace four tires, with a range of $525 to $725. According to CostHelper, a standard, all-season tire costs between $50 and $200 each with an average price of $80 to $150.
When should you replace tires on stock?
“Tire Rack’s advice is that if rain and wet roads are a concern, you should consider replacing your tires when they reach approximately 4/32″ of remaining tread depth.” Obviously the tread will wear away over the life of the tire and the volume of its tread grooves will be reduced.
Why are OEM tires so bad?
Why New Car Tires Wear Out So Fast. The OEM tires that came with your car can’t be replaced (which is a good thing) after they’ve worn out. And they will wear out much sooner than they should. This is because virtually all auto manufacturers specify very soft rubber which means they wear out too fast.
Are OEM tires the same as aftermarket?
From a construction standpoint, there is less difference. The tire carcass is often very similar between the OEM tire and the aftermarket version. Same holds true of off brand vs. big brand tires.
Photo in the article by “Public Domain Pictures”