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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
204 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.

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.
Nov 11, 2016
In and out quickly
Nov 11, 2016
Business Owner replied on Nov 11, 2016:
Thanks for the feedback, Jeff. 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 11, 2016
Good help
Nov 11, 2016
john rocks, this guy at 120ave and washington area has given me good prices for my truck and van. he is easy to talk with and when i stop by for tire checks and rotations, he is always wanting to know how i like my truck tires. the last time i was there i needed van tires and then took the van on a trip, tires handled the rainy oregon and washington weather and the drive was smooth with them on the van. thanks john and see you in a few weeks for a rotation
Nov 11, 2016
You guys are the best , always helpful and knowledgable
Business Owner replied on Nov 11, 2016:
We always love to receive great feedback. I'll pass your comments onto the team! We hope that you have a great day!
Mark Spiewak, Owner
(303) 457-1604
Nov 9, 2016
So I am a local in the Northglenn area and will only go to this particular Big O Tires and have for years bc they are wonderful! Not only are they very quick and efficient, they tell you upfront what to expect and they don't try to overcharge you. They are always friendly to everyone and very convenient so thank you so much you guys!
Nov 8, 2016
They do great work!
Nov 7, 2016
I'm so grateful to have found this particular Big O Tires! Jon and the crew were prompt, honest, experienced and went above and beyond to help me resolve my problem! My family and I definitely will be back. I Highly recommend this store to anyone that appreciates integrity!
Nov 3, 2016
Business Owner replied on Nov 4, 2016:
Thanks for leaving us such a great review, Liz! We hope that you have a great day! Mark Spiewak, Owner 13034571604
Oct 27, 2016
Great Service!: We recently moved to the Denver area from Phoenix and needed new tires on 2 vehicles. We also needed additional repairs and they went above and beyond to make sure that everything was done correctly! Not to mention that everything was done at a reasonable price and every single employee was genuine. Thank you!
Oct 27, 2016
Stellar Service!: I have used this Big O for several things on 2 vehicles, and I would recommend them to anyone!They are always done when they say they will be, and sometimes early.They are very good about updating me on the progress of any service.