Tire Definition & Tread Guide at Lexus of Royal Oak
They’re on every vehicle you see, but you may not realize all that goes into tire sizes and ensuring that they’re perfect for the model they’re fitted on. Your Lexus was no different, from design to build it was intended to have a specific tire size that improves everything from performance to fuel efficiency to safety. That’s why we here at Lexus of Royal Oak recommend you get the original manufacturer tire size for your vehicle, from selecting winter tires to performance variants. Read on to learn in-depth how to read the numbers and lettering on your tires, as well as understanding the purpose of each groove, slot and rib in your tire treads! Find the perfect-fitted tires for your vehicle in our online tire store, or contact our dealership for more.
Tire Size Definition Glossary

P

235

40

R

19

99

V
Tire Tread & Sipe Patterns Explained
A tire tread is more than just random squiggles and lines, all of those designs mean something, and especially when you’re dealing with the kinds of weather we see here in Calgary. Tire treads let you know how equipped they are to perform in conditions like wet roads, snow, highways and more.
1. Sipes
2. Lateral grooves
3. Shoulder blocks
4. Centre rib
5. Circumferential grooves
Tire DOT Marking Meaning
Every tire that is manufactured gets an identification number, either called a Tire Identification Number (TIN) or a Department of Transportation (DOT) number. These numbers are printed on the sidewall of the tire, around its bead area where it would be fitted onto a rim. It’s usually only found on one side, and could face either inward or outward. These numbers help to track the tire, and must be recorded to properly register your tires, as well as signifying that they’ve met top safety standards.
Book an Appointment
If you have any questions at all about tire sizes, their treads, deciphering their numbers and letters, terms or anything else, please don’t hesitate to contact our Lexus tire experts here at Lexus of Royal Oak. Even if you just need help shopping for a new set on your vehicle, be it winter, summer or performance, or need an installation, changeover or wheel alignment, we’re always here to assist.