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690 E 120th Ave
Northglenn, CO 80233


Store Address
690 E 120th Ave
Northglenn, CO 80233

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4.9 /5
215 reviews

Give Us a Call
(303) 457-1604

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Monday 6:30 AM - 6:00 PM
Tue - Fri 7:00 AM - 6:00 PM
Saturday 7:00 AM - 4:00 PM
Sunday Closed

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Tire Services

  • Free Alignment Check With Printout
  • Free Rotation & Re-balance With Tire Purchases
  • Free Flat Repair With Tire Purchases
  • Free Air Pressure Checks Every Day (no appointments needed)
  • Everyday Low Price Tire Guarantee
  • Express Lane Tire Service (no appointments needed)
  • Big O® Tires Credit Card with 6-month, No-interest Financing

Other Services

  • Free Brake Inspection (no appointment needed)
  • Free 22-Point Vehicle Inspection (no appointment needed)
  • Free Battery & Electrical Check
  • Free 5-Minute Wiper Blade/Bulb Inspection
  • Free Local Shuttle Service
  • Complete Owner's Manual Scheduled Maintenance Services
  • Good/Better/Best Oil Change Options (with free top-off service)
  • And More!

* Services offered may vary by location.

Why choose Big O Tires Auto Service?

When it comes to having a car or truck serviced, most drivers have more questions than answers. Questions like "What is rotor resurfacing... and how much will it cost?" And "What on earth is that clunking sound?!" For many years, Big O Tires customers have trusted us to offer straight answers and top-notch services. Big O Tires offers a wide range of diagnostic, repair and routine maintenance services, backed by one of the best national services warranties in the business. Not sure when your vehicle's due for routine maintenance services? Drop by, and we'll look it up for you!

Check out our

Note: Any recommendations provided on are general in nature. Big O Tires recommends that you always consult your vehicle’s Owner’s Manual, the vehicle manufacturer or an associate at your local Big O Tires store for vehicle specific recommendations. The names and descriptions of services are general in nature. Actual service offerings vary by location, and not all stores offer all services! The availability of our oil change service and the use of Valvoline oil products varies depending on the Big O Tires location near you. Please contact a Big O Tires store near you to find out what services and oil products are offered.

Jan 19, 2017
I went to this Big O after reading all of the positive reviews. I was still cautious since I know people write bogus review many times. This is not the case with this place. It is awesome! Since it is awesome, they have many customers so there is usually a wait, but there is WiFi for you to work, a clean restroom, and a coffee/water bar so it is not a bad wait. Plus there is a shopping center across the street to spend time in. The staff is amazing, super patient (I ask a million questions and want everything explained), knowledgeable, helpful, clean, and upfront about everything. They take the time to explain everything and they make suggestions on what they find, but I never felt like I was being sold stuff I couldn't use. Price is good, like I said I ask questions and do a ton of research, so comparably their prices are very reasonable. I highly recommend this place and thank them enormously for a great experience!!
Jan 9, 2017
John was wonderful I needed tires for our GMC Terrain. They got us a great set of tires for a pretty good price. The tires have been great in this Colorado weather.
Jan 6, 2017
I recently brought my minivan in to replace a blown tire. The staff were polite and courteous, and able to accommodate my family and I while we waited. They were able to to replace the tire and mae a few other repairs in a timely manner so we didn't have to wait too long.
Business Owner replied on Jan 6, 2017:
Ben, thank you for taking the time to let us know about your experience! We hope that you have a great day!
Mark Spiewak, Owner
(303) 457-1604
Jan 4, 2017
Jon helped my Granddaughter with her car
Jan 1, 2017
Job well done. I shopped several places for tires and Big O was #1.
Jan 1, 2017
I came in to have my wife car tire check for low tire, not able to fix it due to the damage was on the outer edge replace tire. I did notice the ceiling lights are out and not very bright. Maybe you should look into relamping and replace the lens to. Place looks a little out dated.
Dec 23, 2016
The service we receive here is always good. Jon is wonderful and we appreciate all that he does for us.
Dec 12, 2016
I needed new tires, and Big O was recommended by my son. I went into the store in Northglen on Tuesday to get information, pricing, etc, and on Wednesday the tires were put in place while I shopped at the mall across the street. Great service and excellent personnel!
Dec 10, 2016
The staff was very helpful and took the time to explain all of the service recommendations and answer my questions in detail. I feel like they were honest and cared about the safety of my vehicle while also staying within my budget for new tires and brakes.
Dec 9, 2016
Always good service
Dec 9, 2016
The guyz at this location are awesome and helpful. I will be back!
Business Owner replied on Dec 9, 2016:
Thanks for the kind words! You really made our day. I look forward to seeing you soon!
Mark Spiewak, Owner
(303) 457-1604
Dec 5, 2016
I go to Big O for all my tire needs on multiple vehicles, year after year they offer great prices and more importantly excellent service.
Business Owner replied on Dec 5, 2016:
Omer, thank you for taking the time to let us know about your experience! We hope that you have a great day!
Mark Spiewak, Owner
(303) 457-1604
Dec 1, 2016
Jon always does a fantastic job for us. Thank you!
Nov 30, 2016
Went in with out my husband no knowledge of tires. Jon explained every thing and helped me find the perfect tires. Had two delivered asap and installed when he promised. All at a great price! Thanks so much. We'll be back.
Nov 29, 2016
Big O in Northglenn is the only repair place I will use. Even when they are busy, I notice they treat everyone like they are the only customer there. I am always treated with respect and even though I don't know much about cars, Aaron, John and Chris always listen to me and figure out what's wrong. As a woman, this is important to me because I've gone other places and been treated like I know nothing. I highly recommend Big O in Northglenn and have sent many of my friends who have made the same comments I have.
Nov 28, 2016
Tires came early. Was able to get car done before scheduled.
Nov 25, 2016
John and his crew always go above and beyond in customer service!!!!
Nov 25, 2016
Aaron was extremely knowledgeable and friendly. His customer service skills are top notch. My car is driving better than ever - I will certainly come here from now on.
Nov 21, 2016
Mark, As always your staff and mechanics are always "THE BEST!! AS ALWAYS I WAS TREATED WITH THE COURTESY AND RESPECT BY EVEYONE I came in contact witth especially Mr. Jon Val. I Can't say enough about your business and the people that work for you. I would recommend your shop to anyone who asked about yor business. Thank you and your staff for eveything and I wish you all Happy Holidays and continued success in the future!!!
Nov 16, 2016
It is always a pleasure to have my truck serviced by an honest company performing excellent work. I highly recommend the Big O Tire Store at 690 East 120th Ave.
Nov 15, 2016
John is always the absolute best! Very knowledgeable about everything! He can handle any situation! When they are crazy busy he makes every person feel like they are the only one that matters. He handles that store like a pro!!!
Business Owner replied on Nov 15, 2016:
Jeff and Roni, we always love to receive great feedback. I'll pass your comments onto the team. Thanks again!
Mark Spiewak, Owner
(303) 457-1604
Nov 12, 2016
John made sure all my questions and concerns were answered.
Business Owner replied on Nov 12, 2016:
Thanks for the feedback, Troy. We strive to provide excellent service to our customers at Big O Tires - Northglenn, CO and definitely appreciate your kind words. We hope that you have a great day!
Mark Spiewak, Owner
(303) 457-1604
Nov 12, 2016
Nov 11, 2016
John and all the other staff always great to work with. Great customer service, value and product knowledge.
Nov 11, 2016
Big O staff have always treated me with respect, and handled the high expense of car repair well. I've talked my wife into also using Big O, and she's been pleased as well.