Batteries

What is the battery charging system?
learn more
How often should I check my car battery?
learn more
Do batteries naturally wear out over time?
learn more
How can I tell if my battery is on its last legs?
learn more
Dashboard warning lights – what are they?
learn more

Sign up & Save

Receive special offers, product information and coupons from Big O Tires.

Stay Connected

Check out our $pecial deals

on batteries.

Get Up to $50 Visa® Prepaid Card!
Expires 6/1/2014 thru 12/31/2014

Services offered by Big O Tires

Installation of a new
INTERSTATE I-LINE Battery

In It for the Long Haul
Good partners shorten the trip. Let Big O Tires pair you up with the battery that's right for you from our Outrageously Dependable partner, Interstate Batteries. Reliable is only the beginning for the I-Line battery from Interstate. Give your car that new-battery feeling.

Add to Quote

Included in your battery purchase:

  • Four-year performance warranty, including an 18-month free-replacement period
  • Designed to get the job done in cars and trucks with minimal load, usage and mileage
  • Easy access for easy maintenance
  • Fits most makes and models

Installation of a new
INTERSTATE MEGA-TRON II Battery

Let's Start Something
New journeys start with the twist of your key, so fire up your next adventure with a Mega-Tron II battery from Interstate. Let Big O Tires connect you to the No. 1 name in portable power: Interstate Batteries.

Add to Quote

Included in your battery purchase:

  • Five-year performance warranty, including a 24-month free-replacement period
  • Long-lasting power for cars and trucks
  • Designed to resist excessive internal corrosion
  • Fits most makes and models

Installation of a new
INTERSTATE MEGA-TRON PLUS Battery

Cranky – In a Good Way
Twice a day, every day for years, your engine demands a lot of power. Let Big O Tires connect you to the premium-quality batteries at Interstate Batteries. The Mega-Tron Plus features uncompromising performance with the highest cold cranking amp (CCA) ratings and a reliable nationwide warranty.

Add to Quote

Included in your battery purchase:

  • Six-year performance warranty, including a 30-month free-replacement period
  • High-cranking performance for power-hungry vehicles
  • Durable and resistant in sub-zero temperatures
  • Fits most makes and models

Battery Testing

A dead battery can leave you stranded, so it’s good to have it checked regularly. Service includes electrical system test, remove and recycle old battery, terminal cleaning, add protectant washers and spray, and install new battery.

Battery Cable Replacement

Don't get stuck in the parking lot because of failed battery cables. Let the experts at Big O Tires make sure you have a strong-running battery for confident starts. Service includes visual inspection and cable replacement as necessary.

Alternator Test and Replacement

Before you buy a new battery, let Big O Tires check out the alternator. Our service includes inspecting the wiring, pulley belt, and other components and replacing components or alternator as necessary – letting you know exactly what you need.

Starter Test and Replacement

You turn the key and hear only a click sound. Or the lights come on but nothing else happens. It may be your starter, but don't panic. Big O Tires has you covered. Our service includes a starter motor bench test and replacement as necessary.

Our Service Difference

Expert service that goes the extra mile (or two)

Certified technicians, written quotes, prompt service that's done when promised — when you choose Big O Tires, service for your car or truck is done right the first time. No hassles.

Read full article

Browse service articles

Speed Rating:

The speed rating is a measure of what speed the tire can safely maintain for sustained periods of time. A higher speed rating will generally indicate that you will have better control and handling characteristics. Speed rating standards are established by the U.S. Department of Transportation (DOT). Manufacturers assign speed ratings to tires after extensive performance testing. On the sidewall of every tire, you’ll find one of these speed rating codes:

M – Up to 81 mph
N – Up to 87 mph
P – Up to 93 mph
Q – Up to 99 mph
R – Up to 106 mph
S – Up to 112 mph
T – Up to 118 mph
H – Up to 130 mph
V – Up to 149 mph
W – Up to 168 mph
Y – Up to 186 mph
Z – (See Below)

What does ‘Up to 99 mph’ really mean?
Tires with a Q speed rating can safely sustain speeds of up to 99 miles per hour. The tire may be able to reach higher speeds, but traveling at speeds higher than 99 mph for any length of time would be unsafe - the tire is not designed to handle it.

What is a Z Rating?
For tires having a maximum speed capability above 149 mph, a Z rating may appear in the size designation ...above 186 mph, a Z rating must appear in the size designation, including a Y speed symbol in brackets.

A Few Tips About Speed Ratings…
Never mix tires with different speed ratings, as this may cause serious handling problems.

We don’t recommend downgrading the speed rating of your tires, as the vehicle manufacturer has done extensive testing to determine which tires match the various driving characteristics of the vehicle. However, if you are looking for better handling, there is generally no problem in moving up to a higher speed-rated tire.

Most importantly: Put safety first. The speeds shown are test speeds; they are not recommended speeds.

Temperature Rating:

A comparative grade based on the tire’s resistance to heat and its ability to dissipate heat, again as measured under controlled conditions. The grades, from highest to lowest, are designated A – B – C. An A-rated tire is the coolest running, while a C-rating meets the minimum federal performance standards. These temperature grades are set based on a tire that is properly inflated and not overloaded.

Traction Grade:

A comparative grade based on the tire’s ability to stop on wet pavement, again as measured under controlled conditions on wet asphalt and concrete surfaces. The grades, from highest to lowest, are designated AA – A – B – C. A tire that is graded AA should have better traction or stopping performance than a tire with a lower grade, based on the specific straight-ahead braking tests.

Treadwear Grade:

A comparative grade based on the actual wear of the tire’s tread when tested under specific controlled conditions. All tires are tested under the same conditions to allow for comparison between manufacturers and between different lines of tires from the same manufacturer. The system is fairly easy to understand. A tire with a treadwear grade of 400 should have a useful tread life approximately twice as long as a tire with a treadwear grade of 200. The higher the grade, the better the expected treadwear.

Looking for new tires with optimal traction? Or are long-lasting treads a bigger priority? There’s a simple way to compare tire specs!

The Uniform Tire Quality Grading (UTQG) system was developed by the Department of Transportation (DOT) to assist consumers in the purchase of their tires by providing a standard grading system used by all tire manufacturers. Tire manufacturers use the UTQG system to grade their tires in three important areas: treadwear, traction and temperature. The UTQG grade for each tire is shown on the paper label affixed to the tire and is also molded in the sidewall.

Treadwear Grade – A comparative grade based on the actual wear of the tire’s tread when tested under specific controlled conditions. All tires are tested under the same conditions to allow for comparison between manufacturers and between different lines of tires from the same manufacturer. The system is fairly easy to understand. A tire with a treadwear grade of 400 should have a useful tread life approximately twice as long as a tire with a treadwear grade of 200. The higher the grade, the better the expected treadwear.

Traction Grade – A comparative grade based on the tire’s ability to stop on wet pavement, again as measured under controlled conditions on wet asphalt and concrete surfaces. The grades, from highest to lowest, are designated AA ABC. A tire that is graded AA should have better traction or stopping performance than a tire with a lower grade, based on the specific straight-ahead braking tests.

Temperature Grade – A comparative grade based on the tire’s resistance to heat and its ability to dissipate heat, again as measured under controlled conditions. The grades, from highest to lowest, are designated ABC. An A-rated tire is the coolest running, while a C-rating meets the minimum federal performance standards. These temperature grades are set based on a tire that is properly inflated and not overloaded.

UTQG is a great way to compare tires from various manufacturers and between specific lines from the same manufacturer. Remember: The UTQG isn’t a safety rating and it doesn’t guarantee a tire’s mileage performance - but you can use the UTQG in conjunction with price, warranty, appearance and recommendations to make the right tire choice for your needs. If you have any questions about UTQG or various tire lines, the Big O Tires team is always ready to help!

Hauling groceries – or bricks? The Load Rating or Load Index indicates how much weight each tire can safely support.

Every tire’s load rating is stamped into its sidewall. Once you know the load rating, you can use the chart below to determine the amount of weight that one tire can support. Then just multiply the weight by four - or the number of wheels on your vehicle - to determine your vehicle’s maximum load-carrying capacity.

Load Rating Table

Sometimes the maximum load (for example, 1060 kg) will be stamped into the sidewall so that you don't have to decipher the load rating. Remember: never install tires with a lower load-carrying capacity than the tires that were installed on your vehicle by the manufacturer!

Load Range:

The load rating is a measure of the tire's strength — its ability to hold air pressure under load.

The load rating influences the sidewall strength of a vehicle tire. If a tire has a load rating that is too low, the handling of the vehicle could become unstable as the sidewall buckles under the vehicle's weight. Conversely, a much higher load rating than needed can dramatically harshen ride quality.

The recommended load rating for a vehicle's tires can be found in its owner's manual. It is also normally affixed to a sticker located on one of the vehicle's door jams. If you are replacing tires supplied with the vehicle from the manufacturer, the load rating written on the tires is an appropriate guide.

Sidewall:

There are other codes on some tires that provide you with additional information, some of which are specific to light truck tire applications. Some of the other codes that you might find on your tires include:

LT = Stands for light truck application. Example: LT235/85R16
C, D or E = Load range indication for light truck applications
REIN = Reinforced
OWL = Outlined White Letters
RWL = Raised White Letters
ORWL = Outlined Raised White Letters
B, BLK, BW, BSW = Blackwall or Black Sidewall
W, WW, WSE – Whitewall or White Sidewall
XNW = Extra Narrow White Width
XL = Extra Load Capacity

Section Width:

The linear distance between the outside sidewalls of an inflated tire without any load (exclusive of protruding side ribs and decorations).

Sidewall Aspect Ratio:

The ratio between tire height and width.

Important note on quoted prices:

Prices quoted do not include additional charges for sales taxes, mounting and balancing, valve stems, tire disposal fees, state recycling fees, tire protection plans and other charges. Prices may vary from one store to another or from one date to another. Tires listed may not be in stock at the identified store. Prices listed were received from individual stores and have not been verified by Big O Tires. Please call the Big O Store of your choice for up-to-date information and details on pricing, additional charges and product availability.

How Are Tire Sizes Specified?
The first number describes width of the tire (section), the second number describes the aspect ratio (profile), and the third number the wheel diameter (rim size).
Alignment makes a big difference in how long tires last, how much gas you use, and steering and safety. When you buy new tires, we'll make sure they're properly aligned — for free!

About TPMS

TPMS takes the guesswork out of accurate tire pressure. It automatically lets you know when pressure is low, which keeps you safer, protects your tires from damage and improves your MPGs.

How to protect your TPMS for the long haul:


  • Avoid road hazards like potholes and curbsides

  • Keep your car battery charged and healthy

  • Maintain your tires — an important effort for many reasons, not the least of which is so you can avoid flat tires, which can damage your TPMS

About TPMS

Protect Your Purchase!

Have you considered our Tire Protection Package?

Available with purchase of new, non-Big O brand tires, TPP includes the following comprehensive coverage:


  • 3-Year Full Free Repair or Replacement Road Hazard

  • 3-Year Full Free Replacement Workmanship & Materials

  • 3-Year Free 24/7 Flat Tire Change

  • Limited Lifetime Prorated Repair
    or Replacement Coverage

  • Free Rotations and Rebalance for the Useful Life of Tire

  • Limited Mileage Warranty

Breathe Easy, You’re Covered!

Your Big O brand tire purchase includes our comprehensive warranty protection and service.

Here’s how you’re protected:


  • 3-Year Full Free Repair or Replacement Road Hazard

  • 3-Year Full Free Replacement Workmanship & Materials

  • 3-Year Free 24/7 Flat Tire Change

  • Limited Lifetime Prorated Repair
    or Replacement Coverage

  • Free Rotations and Rebalance for the Useful Life of Tire

  • Limited Mileage Warranty

Protect Your Purchase!

Have you considered our Tire Protection Package?

Available with purchase of new, non-Big O brand tires, TPP includes the following comprehensive coverage:


  • 3-Year Full Free Repair or Replacement Road Hazard

  • 3-Year Full Free Replacement Workmanship & Materials

  • 3-Year Free 24/7 Flat Tire Change

  • Limited Lifetime Prorated Repair
    or Replacement Coverage

  • Free Rotations and Rebalance for the Useful Life of Tire

  • Limited Mileage Warranty