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Big O Tires
7425 W 52ND AVE
Arvada CO
(303) 421-2881

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Big O Tires
6510 Indiana St Ste A
Arvada CO
(303) 996-0001

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Big O Tires
15320 East Iliff
Aurora CO
(303) 337-9631

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Big O Tires
22994 East Smoky Hill Road
Aurora CO
(303) 680-5500

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Big O Tires
18431 E. Hampden Ave.
Aurora CO
(303) 766-5500

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Big O Tires
1770 South Havana Street
Aurora CO
(720) 449-0390

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Big O Tires
41121 Highway 6
Avon CO
(970) 845-8473

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Big O Tires
100 Southside Drive
Basalt CO
(970) 927-3038

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Big O Tires
3000 Valmont Rd
Boulder CO
(303) 449-5393

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Big O Tires
593 Summit Blvd
Broomfield CO
(303) 951-6000

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Big O Tires
6430 W. 120th Ave.
Broomfield CO
(303) 466-4117

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Big O Tires
3030 East Main St.
Canon City CO
(719) 269-8000

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Big O Tires
508 E. Castle Pines Parkway
Castle Pines CO
(720) 733-1707

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Big O Tires
750 South Perry Street
Castle Rock CO
(303) 688-8804

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Big O Tires
8110 S. University
Centennial CO
(303) 694-4700

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Big O Tires
6711 South Potomac
Centennial CO
(303) 790-2446

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Big O Tires
3575 Woodmen Road
Colorado Springs CO
(719) 268-9988

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Big O Tires
4496 Austin Bluffs Parkway
Colorado Springs CO
(719) 599-4555

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Big O Tires
1611 S. Nevada Ave.
Colorado Springs CO
(719) 473-7089

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Big O Tires
5820 Omaha Blvd.
Colorado Springs CO
(719) 550-1840

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Big O Tires
806 E. Fillmore St.
Colorado Springs CO
(719) 520-0722

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Big O Tires
26237 Conifer Road
Conifer CO
(303) 816-7088

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Big O Tires
1856 East Main Street
Cortez CO
(970) 565-3633

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Big O Tires
1111 West Victory Way St 128
Craig CO
(970) 824-2446

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Big O Tires
111 Gunnison River Drive
Delta CO
(970) 874-0580

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Big O Tires
7500 North Pecos
Denver CO
(303) 427-9151

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Big O Tires
1940 S. Federal Blvd.
Denver CO
(303) 934-5831

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Big O Tires
5405 E Colfax Avenue
Denver CO
(303) 355-3551

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Big O Tires
4695 Peoria St.
Denver CO
(303) 307-0331

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Big O Tires
1210 Escalante Dr.
Durango CO
(970) 247-2146

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Big O Tires
140 Elizabeth St.
Elizabeth CO
(303) 646-6442

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Big O Tires
1633 Raven Avenue
Estes Park CO
(970) 586-8085

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Big O Tires
29032 Crossroads Ln.
Evergreen CO
(303) 526-1100

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Big O Tires
4245 S. Mason St
Fort Collins CO
(970) 223-0415

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Big O Tires
1506 N. College Ave.
Fort Collins CO
(970) 493-3356

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Big O Tires
6650 Camden Blvd.
Fountain CO
(719) 392-4203

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Big O Tires
820 N. Summit Blvd.
Frisco CO
(970) 668-1446

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Big O Tires
51079 Highway 6
Glenwood Springs CO
(970) 945-8550

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Big O Tires
17503 South Golden Road
Golden CO
(303) 273-2999

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Big O Tires
215 N 3RD ST
Grand Junction CO
(970)243-6242

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Big O Tires
2462 HWY. 6 & 50
Grand Junction CO
(970) 243-4040

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Big O Tires
2894 North Ave.
Grand Junction CO
(970) 243-2440

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Big O Tires
3325 23rd Ave.
Greeley CO
(970) 330-8115

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Big O Tires
8151 E Arapahoe Rd
Greenwood Village CO
(303) 267-0055

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Big O Tires
320 S. Union
Lakewood CO
(303) 989-3755

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Big O Tires
9009 W. Colfax Ave
Lakewood CO
(303) 232-0797

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Big O Tires
9875 W. Remington Pl
Littleton CO
(303) 347-8806

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Big O Tires
9973 W Bowles Ave
Littleton CO
(303) 978-1970

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Big O Tires
1205 South Main Street
Longmont CO
(303) 772-1462

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Big O Tires
1301 S. Boulder Rd.
Louisville CO
(303) 666-8665

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Big O Tires
2480 N. Lincoln Ave
Loveland CO
(970) 667-6074

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Big O Tires
1900 S Townsend Ave
Montrose CO
(970) 240-6963

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Big O Tires
650 Colorado 105
Monument CO
(719) 488-2299

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Big O Tires
690 East 120th Ave.
Northglenn CO
(303) 457-1604

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Big O Tires
10431 Parkglenn Way
Parker CO
(303) 840-2800

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Big O Tires
430 Eagleridge Blvd.
Pueblo CO
(719) 546-9820

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Big O Tires
5570 East Highway 50
Salida CO
(719) 539-3585

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Big O Tires
3740 East 104th Avenue
Thornton CO
(303) 450-3393

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Big O Tires
2803 Toupal Drive
Trinidad CO
(719) 846-0800

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Big O Tires
9491 W. 44th Ave.#105
Wheat Ridge CO
(303) 425-5545

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Big O Tires
555 chester ave
Woodland Park CO
(719) 687-6682

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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