Store Address
1856 E Main St
Cortez, CO 81321

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4.8 /5
46 reviews

Give Us a Call
(970) 565-3633

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Mon - Fri 7:00 AM - 6:00 PM
Saturday 7:00 AM - 5:00 PM
Sunday Closed

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Tire Services

  • Free Alignment Check With Printout
  • Free rotation with new tire purchase
  • 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

  • Fleet 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
  • 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 15, 2019
Great crew. Ordered my tires, worked with me getting mounted and balanced due to special needs on a build jeep. Professional and pleasant.
Business Owner replied on Jan 17, 2019:
Thanks, Doug, for taking the time to share your thoughts! We're so pleased to hear that we were able to help you out. We are always more than happy to assist you if anything else comes up. Take care!
Spencer Smith, Owner
Nov 11, 2018
The guys treated me extremely well. I appreciate their friendly, personalized service. They have definitely earned my loyalty.
Business Owner replied on Nov 13, 2018:
Thanks, Cadette, for taking the time to share your thoughts! We're so pleased to hear you had such a wonderful experience with our team. We look forward to seeing you again soon!
Spencer Smith, Owner
Oct 18, 2018
We were on vacation and needed some things done to our new-to-us 1997 Jeep. We were so pleased with the service and follow-up over the next couple of days. Friendly and helpful at all turns. We returned a couple of days later for additional help and were greeted by name. Again, the service was excellent. Thank you, Adam, for all your assistance.
Business Owner replied on Oct 21, 2018:
Hello Glenn & Diane, thank you for taking the time to let us know about your experience! We're so pleased to hear that we were able to help you out. We hope that you have a great day!
Spencer Smith, Owner
Sep 28, 2018
From Ky. and on a visit to Grand Canyon, Utah, N. M. and CO. Was missing a wheel lug. Stopped at Big O. They took time without an appointment. Friendly, and kind. They replaced the wheel lug and 3 others were loose. Who knows what would have happened on our 1,400 mile home. Thanks to Nathan and Jacob. A+.
Business Owner replied on Oct 1, 2018:
Susan, we're happy to hear you had such a positive experience with our team! Please don't hesitate to reach out to us if there's anything more we can do!
Spencer Smith, Owner
Aug 17, 2018
We were traveling back from a nice vacation in Montrose Colorado heading home to Phoenix Arizona when we had a serious blowout of one of our tires which left us stranded just outside Telluride Colorado on Hwy 145. once we safely made it to Cortez Colorado we found out that the tires we had issues with were recall tires from Michelin and was referred to Big O Tires which is a Michelin dealer. Big tires worked with Michelin and got new tires for us and we were able to make it home safely. We are so grateful for all the help they gave!!
May 31, 2018
I’m on a leisurely drive around the US and unfortunately punctured one of my almost new tires on my truck in a very remote area. After managing to get it changed I discovered the closest Big O was about 100 miles away in Cortez. I rerouted my trip since I had the road hazard coverage. I bought the tires at the Big O in Evergreen Colorado who were absolutely amazing in their service. The Cortez store maintains the quality that Evergreen has. I showed up with no appt and they had me on the road again within an hour. Great people and service.
May 18, 2018
Big O Tires in Cortez, CO is very knowledgeable and helpful. They are happy to take the time to explain the specific details of whatever service is being done on your car. They are also able to squeeze you in if you're in a bind. I'm very happy with their service and will return.
Nov 18, 2017
On the way to Atlanta Ga found out my tire had a slow leak was looking for a tire shop this shop came up with good reviews ...we had a spare tire in my car the put it on for free didn't charge...tried to pay they still didn't want the money ...thank you for helping us get back to Atlanta safely
Oct 11, 2017
These guys are awesome, great service, straight talk, good prices.
Jul 14, 2017
We are from Kentucky and were on vacation when we picked up a nail in our tire. Stopped in at Big O and the staff was excellent! Very friendly, helpful and fast! They got us back on the road for a very fair price!! Thank you!!! ��������
Jun 15, 2017
Stopped in while on a six week road trip with my family from Pennsylvania. We were having problems with brakes on my van. Nolan greeted us and was very professional and friendly. They immediately pulled the tires to check things out and made a minor adjustment and didn't charge us anything. Thanks for your outstanding service and kindness to us!
Jun 2, 2017
Thousands of miles from home I took my RV in for a noise in the front end. Turned put to be a cracked brake rotor. Adam and the guys took care of us like family. Super professional team, wish they were in Florida so they could be my go to guys. Thanks Again Scott, Wilma and Benji
May 9, 2017
I wanted to say THANK YOU to you and the rest of the team there at the Big O Tires store in Cortez CO. I was very impressed that your team took what feels like a personal interest in this project to install new wheels on my 2017 Subaru WRX. I noticed lots of little things. For example, I noticed they took time to clean up the wheels after they were put on. I noticed they used rags to make sure the wheels didn't get scratched up. They set the wheels down on cardboard instead of setting them on the cement. I could go on and on. I got there at 5:00 PM which was a full 1 hour before closing. I don't think I left until 6:30 PM which means I kept them late. They didn't complain about having to stay late. In fact, they seemed to be a little excited. I appreciate their willingness to see the job thru to the end. I know you and the rest of the team work on tires and wheels all day so it may be just another day at work, but I was very excited to get the new wheels on my car. It was a special occasion for me and their enthusiasm was noticed and appreciated. They were both professional and made me feel good as a customer. Most people will only take the time to say something if there is a problem that needs to be resolved. In this case, I wanted to say THANK YOU from a very happy customer. It is experiences like this that will make me a repeat customer and recommend the Big O Tires store in Cortez to my friends and family. :) Keep up the great work! :)
Apr 17, 2017
I want to say that I appreciate the fact that no matter what was needed on my vehicle that no high pressure salesmanship was applied
Apr 14, 2017
Apr 12, 2017
I received a call when the job was completed. All went well.
Dec 28, 2016
I have never had a better experience buying tires and the warranty on my tires is excellent and highly useful. The management is courteous and pleasant to deal with. I look forward to buying tires from Big O for a long time.
Nov 15, 2016
As usual Spencer, the service is great. Happy that Jay is there for all of us
Nov 6, 2016
Always happy to deal with Nolan and Adam. Very professional and responsive to the needs of our dealership. Thank You. Tom McConville Sales Manager
Oct 4, 2016
I'm confident that they did a first class work on my truck.
Sep 29, 2016
Had tires rotated and balance, seem to to a good job, they just never call and let me know my vehicle is done!
Sep 20, 2016
Visiting Mesa Verde National Park and was towed to Big O's. Nolan was a great help and saved us time and money.Also herecommend a equally good shop to fix the ac compressor.Thank you!
Sep 17, 2016
Love my Big O Boys! They always take care of me and my girls!
Aug 24, 2016
I went to them a couple of days ago. It's was really fast service.
Aug 8, 2016
Very satisfied with there service I got tire rotation and balanced