Hi there! If you’re a Petrol Head like me, then you’ve probably heard of the amazing machine that the GMC Sierra 1500 is! It’s a popular automobile and a fairly good one at that. 

In fact, a lot of truck lovers love the GMC Sierra. 

But what size tires do they have?

What Size Tires Are On A GMC Sierra 1500?

Generally, the size of the tires of your GMC Sierra depends on the year of the manufacturer. The GMC Sierra 1500 has tire sizes including but not limited to LT275/65R18C, 275/60R20, or 275/60R20SL. 

Consequent on the trim level, the GMC Sierra 1500 has spare tire sizes including but not limited to 265/70R17SL, 255/80R17SL, or 255/70R17.

2022

In the same vein, the 2022 GMC Sierra 1500 has tire sizes of LT275/65R18C, 275/60R20, 275/60R20SL, 255/70R17, and 265/65R18SL. 

The 2022 GMC Sierra 1500 has spare tire sizes of 265/70R17SL, 255/80R17SL, and 255/70R17. 

2021

Judging from the trim level, the 2021 GMC Sierra 1500 has tire sizes of 265/65R18SL, 255/70R17, 275/60R20, and 275/60R20SL.

It has spare tire sizes of 265/70R17SL, 255/70R17, and 255/80R17SL. 

2020

Judging from the trim level, the 2020 GMC Sierra 1500 has tire sizes of 265/65R18SL, 255/70R17, 275/60R20, and 275/60R20SL, and has spare tire sizes of 265/70R17SL, 255/70R17, and 255/80R17S. 

2019

The 2019 GMC Sierra 1500 has tire sizes of 265/65R18SL, 255/70R17, 275/60R20, 275/60R20SL, and P255/70R.

Contingent on the trim level, the 2019 GMC Sierra 1500 has spare tire sizes of 265/70R17SL, 255/70R17, 255/80R17SL, and P255/70R17. 

2018

The 2018 GMC Sierra 1500 has tire sizes of P255/70R17, P275/55R20, and P265/65R18. 

Subject to the trim level, the 2018 GMC Sierra 1500 has spare tire sizes of P255/70R17 or P265. 

2017

The 2017 GMC Sierra 1500 has tire sizes of P255/70R17, P275/55R20, and P265/65R18. 

Depending on the trim level, the 2017 GMC Sierra 1500 has spare tire sizes of P255/70R17 or P265/70R17. 

What Size of Tires is on a GMC Sierra 1500 1 What Size Tires Are On A GMC Sierra 1500?

2015

The 2015 GMC Sierra 1500 has tire sizes of P255/70R17, P275/55R20, and P265/65R18.

It also has spare tire sizes of P255/70R17 or P265/70R17. 

2014

The 2014 GMC Sierra 1500 has tire sizes of P255/70R17, P275/55R20, and P265/65R18. 

Contingent to the trim level, the 2014 GMC Sierra 1500 has spare tire sizes of P255/70R17 or P265/70R17. 

2013

The 2013 GMC Sierra 1500 has tire sizes of P275/55R20, P245/70R17, P265/70R17, and P265/65R18. 

It also has spare tire sizes of P275/55R20, P245/70R17, P265/70R17, and P265/65R18. 

2010

The 2010 GMC Sierra 1500 has tire sizes of P245/70R17, P265/70R17, P265/65R18, and P265/62R18. 

The spare tire sizes are P245/70R17 or P265/70R17. 

2009

The 2009 GMC Sierra 1500 has tire sizes of P265/70R17, P265/65R18, P245/70R17, and P265/62R18. 

It also has spare tire sizes of P265/70R17 or P245/70R17.

2008

The 2008 GMC Sierra 1500 has tire sizes of P245/70R17 or P265/70R17.

It also has spare tire sizes of P245/70R17 or P265/70R17. 

2007

The 2007  GMC Sierra 1500 has tire sizes of P265/70R17, P245/70R17, P235/75R16, P245/75R16, and LT245/75R16.

It also has spare tire sizes of P265/70R17, P245/70R17, P235/75R16, P245/75R16, and LT245/75R16. 

2006

The 2006 model has tire sizes of P245/70R17, P265/70R17, P235/75R16, P245/75R16, and LT245/75R16. 

It also has spare tire sizes of P245/70R17, P265/70R17, P235/75R16, P245/75R16, and LT245/75R16. 

2005

The 2005 model has tire sizes of P245/70R17, P265/70R17, P235/75R16, P245/75R16, and LT245/75R16. 

Its spare tires also come in sizes of P245/70R17, P265/70R17, P235/75R16, P245/75R16, and LT245/75R16. 

2004

The 2004 GMC Sierra 1500 has tire sizes of P235/75R16, P245/75R16, P255/70R16, and P265/70R17.

Its spare tires also come in sizes of P235/75R16, P245/75R16, P255/70R16, and P265/70R17. 

2003

The 2003 GMC Sierra 1500 model has tire sizes of P235/75R16, P255/70R16, P245/75R16, and LT245/75R16.

Its spare sizes come in P235/75R16, P255/70R16, P245/75R16, and LT245/75R16. 

2002

The 2002 GMC Sierra 1500 has tire sizes of P265/70R17, P255/70R16, P245/75R16, and LT245/75R16.

Its spare tire sizes come in P265/70R16, P255/70R16, P245/75R16, and LT245/75R16. 

How to Read Tire Sizes Accurately

It is possible that all the information provided above looks or seems foreign to you. 

Keep reading so that you can know how to accurately interpret the tire sizes. 

For example, the stipulated tire size is P245/75R16. 

  • P or LT or ST denotes the tire’s intended use. P is Passenger, LT means Light Truck, T means Temporary and ST means Special Trailer. The intended usage of the automobile tires is what is specified here. 
  • 245 is the width of the tire tread in millimeters.
  • 75 is the Tire Profile. The ratio between the profile (sidewall) height and the width of the tire’s tread. It is measured in percent. A lower number is a low profile tire and a higher number has a higher sidewall. 
  • R is the Tire Construction. It can be R(Radial), B(Bias Belt), or D( Diagonal). 
  • 16 is the Rim (wheel) diameter in inches.

Pros of using a GMC Sierra 1500

  • Variable Valve timing
  • Driver Control Technology.

Variable Valve Timing

The GMC Sierra’s variable valve timing delivers both speed and power at the same time, boosting performance, gas mileage, and emission levels. 

When more power is required, variable valve timing allows for consistent power and bold acceleration while maximizing efficiency when less power is required.

Driver Control Technology

Available in all GMC Sierra trucks, driver control technology provides drivers with both reliability and peace of mind. 

Furthermore, the GMC Sierra’s coil-over-shock suspension was created with the driver’s safety in mind

You’re likely to encounter tough and rugged terrain someplace, whether you’re going on a holiday getaway or commuting to a new job. 

Furthermore, the GMC Sierra’s coil-over-shock suspension ensures seamless driving and a more regulated drive regardless of the conditions.

Which of the GMC Sierra 1500 Models is the Best?

We cannot particularly pinpoint which model is the best

However, we have created a list of the models that are absolutely terrific! 

  • 2012 GMC Sierra 1500
  • 2018 GMC Sierra 1500
  • 2021 GMC Sierra 1500.

2012

This 2012 GMC Sierra is the ideal vehicle for a close-knit family, especially if you want a smooth and peaceful trip. 

Higher trim levels offer technologies like Bluetooth and a built-in navigation system. 

Several users praised the vehicle’s strong towing capability and outstanding fuel economy.

2018

According to reports, the 2018 GMC Sierra has the highest two ratings in the class for trucks, making it extremely dependable.

This vehicle has standout hauling capability. 

It also has a helpful cargo bed and plenty of space for passengers to sit or store their belongings. 

It also boasts of high fuel efficiency and a powerful engine which is necessary to have a smooth ride.

2021

Following the 2012 GMC Sierra, the 2021 GMC is also regarded as the most reliable. 

It includes a fuel-efficient diesel among its five qualified powertrains. 

It’s also designed to be quieter so you can drive comfortably without feeling any bumps. 

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