Skip the auto shop - Our mechanics make house calls

Converting Euro-Metric and P-Metric Tire Sizes

Converting Tire Size

When you shop for tires, or even if you are in the auto parts store for something other than tires, you’ve likely seen tire ads with specs listed on them. A handful of numbers, letters, and facts are listed like speed rating, quality rating (UTQG), size, style, load range, and so on. You might even see a p-metric or euro-metric. Here's what they mean.

What’s the difference?

The tire size 215/60R16 is a euro-metric size, and P215/60R16 is a P-metric size. So what’s the difference? They both have the same measurement. The tire is identical in physical dimensions, however their composition can be different in many cases.

Euro-metric tire ratings began in the 60’s. It’s a simple way of measuring a tire in millimeters, and a straightforward calculation shows the aspect ratio, or height, of the tire compared to the width. Because different vehicles have different load requirements, automotive manufacturers would have tires developed to match their needs. Over time, several combinations of load capabilities and sizes emerged to fit those needs. A broadly used system was needed to create uniform sizing.

The P-metric system began in the 1970’s in the US. It rates a tire according to its load-carrying abilities, physical size, and its tire pressure capacity. P-metric tires are used for passenger-carrying vehicles such as cars, vans, and small trucks. It uses a formula for the load rating, so all auto manufacturers are able to engineer vehicles around a specific tire size or ability.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How Long Does a Throttle Return Spring Last?
Not all vehicles on the road feature an electronic throttle control (ETC), which is also called drive-by-wire. For vehicles that don't offer this system, they have a throttle cable instead that...
Veteran and Military Driver Laws and Benefits in Idaho
The state of Idaho offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch in the...
Veteran and Military Driver Laws and Benefits in New Mexico
The state of New Mexico offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch...


Related questions

Q: Need help choosing the right rim size for my tire

Hi...Tire size 33 x 12.5R16 is equivalent to LT305/70R16. The recommended rim width is 8 to 9.5 inches with 9 inches being typical. Rim width is not the only critical dimension, you also have to be sure you have the...

Q: Are Euro-Metric and P-Metric Tires Interchangeable?

When looking for tires, you may run into some confusion when you see words like euro-metric or p-metric. With all of the other ratings on tires, such as temperature, load, treadwear, and traction, adding these other terms into the mix...

Q: How do I calculate the load carried ?

It’s easy to think that your car can carry pretty much whatever you can cram inside, but that’s not actually the case. Your car has a weight limit, and it’s probably not as high as you think. This limit includes...