See Details

Buy 3 Get 4th Free or Buy 2 Get 15% Off

Close (X)

Buy 2, Get 15% Off Tires
Receive 15% off 2 select tires when scheduled for installation on PepBoys.com and installation is completed between 9/29/14 through 10/25/14. Use promotional code FALLTIRES at checkout to receive discount OR click here to print this in store coupon and present at time of installation. Cannot be combined with any other offer, coupon or rebate. Valid on select in stock tires only, those tires for which discount is available will be identified in search results, all other tires and special order tires are excluded from this offer. Requires purchase of road hazard warranty and tire installation package which includes valve stems or TPMS reseal kit and balancing.

Buy 3, Get the 4th Free Instantly!
Receive the amount of 1 tire off when 4 are added to cart and scheduled for installation on PepBoys.com. Installation must be completed between 9/29/14 through 10/25/14. Can not be combined with any other offer, coupon or rebate. Valid on select in stock tires only, those tires for which discount is available will be identified in search results, all other tires and special order tires are excluded from this offer. Requires purchase of road hazard warranty and tire installation package which includes valve stems or TPMS reseal kit and balancing.

Tread Types

Tread Types


What are the differences in
tire tread design and what
do they mean?

Tires are designed with different types of tread, each of which is meant for different road conditions and driving styles. There are four different types of tire tread: directional, symmetrical, asymmetrical, and directional/asymmetrical.

Schedule Your Service Appointment

Click to schedule a Tire Service at Pep Boys

Directional (unidirectional)

Directional tire tread features a large V-shaped pattern with large spaces or grooves between the tread blocks. The grooves improve hydroplaning resistance at high speeds by siphoning water more efficiently through the tread making these tires ideal for performance and ultra-high performance applications. Tires with directional tread are designed to roll in one direction and have an arrow on the sidewall of the tire that shows which way the tires should roll. They are meant to be rotated front-to-back (and vice versa) but not side-to-side because of the directional design. Vehicles equipped with different size tires on the front and rear (staggered), prohibit the ability to rotate directional tires unless they are remounted.

Symmetrical

Symmetrical tire tread has the same pattern – continuous grooves and/or independent lugs – across the whole tire. This type of tire is the most common and found on most non-high-performance passenger cars because it is typically quiet and long-lasting. Also, they can be rotated in many different ways, which helps to prolong the life of the tires and makes them more versatile.

Asymetrical

Asymmetrical tire tread, most commonly found on sports cars, is a bit of hybrid in that it combines a variety of tread patterns for maximum grip on both wet and dry roads. Usually the inside and middle parts of the tire will be designed for wet and/or winter traction, while the outside of the tire will have large tread blocks for maximum cornering capability on dry surfaces. To ensure that the tires are positioned correctly on the car (to maximize handling capabilities), the sidewalls are marked “outside only” and “inside only.” Many different rotation patterns can be used for tires with asymmetrical tread patterns.

Directional/Asymmetrical

Directional/asymmetrical tire tread is the best of both worlds – it features the V-shaped pattern of the directional tread for discharging water away from the tire and the dry weather traction of the asymmetrical tread. You should follow the same rules as directional tires when it comes to rotation patterns. Vehicles equipped with different size tires on the front and rear (staggered), prohibit the ability to rotate directional/asymmetrical tires unless they are remounted.