GMC SIERRA 1500 TIRES
Contents
1999-2006 GMC Sierra 1500 (GMT800)
Finding the best replacement tires for your GMT800 GMC Sierra 1500 can be difficult. Rolling Big Power specializes in offering tire upgrades for the Sierra platform. Additionally, RBP has a wide range of niche and unique tire sizing options that accommodate aftermarket wheels and suspension setups.
The Sierra 1500 from 1999-2006 utilizes tires from 16 inches up to 18 inches, depending on the trim level of the truck. The table below shows factory tire sizes for the 1999-2006 Sierra 1500, along with flotation size conversions to help make shopping for off-road tires easy.
| Diameter | Standard Sizing | Flotation Sizing |
|---|---|---|
| 16 Inch | 235/75R16 | 29.88 x 9.25 x 16 |
| 16 Inch | 245/75R16 | 30.47 x 9.65 x 16 |
| 16 Inch | 255/70R16 | 30.06 x 10.04 x 16 |
| 16 Inch | 265/75R16 | 31.65 x 10.43 x 16 |
| 17 Inch | 245/70R17 | 30.5 x 9.65 x 17 |
| 17 Inch | 255/70R17 | 31.06 x 10.04 x 17 |
| 17 Inch | 265/65R17 | 30.56 x 10.43 x 17 |
| 17 Inch | 265/70R17 | 31.61 x 10.43 x 17 |
| 18 Inch | 265/65R18 | 31.56 x 10.43 x 18 |
2007-2013 GMC Sierra 1500 (GMT900)
The third generation Sierra 1500 from 2007-2013 utilizes tires from 17 inches up to 20 inches, depending on the truck’s trim level. This generation differs from the previous generation because the option for 16 inch tires was removed, and for the first time a 20″ option was offered. The table below shows factory tire sizes for the 2007-2013 GMC Sierra 1500, along with flotation size conversions to help make shopping for off-road tires easy.
| Diameter | Standard Sizing | Flotation Sizing |
|---|---|---|
| 17 Inch | 245/70R17 | 30.5 x 9.65 x 17 |
| 17 Inch | 265/70R17 | 31.61 x 10.43 x 17 | 17 Inch | LT245/70R17 | 30.5 x 9.65 x 17 |
| 17 Inch | LT265/70R17 | 31.61 x 10.43 x 17 |
| 18 Inch | 265/65R18 | 31.56 x 10.43 x 18 |
| 20 Inch | 275/55R20 | 31.91 x 10.83 x 20 |
*Note: The Light Truck designation is denoted with LT.
2014-2018 GMC Sierra 1500 (GMTK2)
The fourth generation Sierra 1500 from 2014-2018 utilizes tires from 17 inches up to 22 inches, depending on the truck’s trim level. This generation sees the introduction of a new 22″ option. The table below shows factory tire sizes for the 2014-2018 GMC Sierra 1500, along with flotation size conversions to help make shopping for off-road tires easy.
| Diameter | Standard Sizing | Flotation Sizing |
|---|---|---|
| 17 Inch | LT245/75R17 | 31.47 x 9.65 x 17 |
| 17 Inch | LT255/70R17 | 31.06 x 10.04 x 17 |
| 17 Inch | LT265/70R17 | 31.61 x 10.43 x 17 |
| 18 Inch | LT265/65R18 | 31.56 x 10.43 x 18 |
| 20 Inch | LT275/55R20 | 31.91 x 10.83 x 20 |
| 22 Inch | LT285/45R22 | 32.1 x 11.22 x 22 |
*Note: The Light Truck designation is denoted with LT.
*Note: All sizing options come equipped on both pre-facelift and facelifted models.
2019-2025 GMC Sierra 1500 (GMTT1)
The current and fifth generation Sierra 1500 from 2019-2025 utilizes tires from 17 inches up to 22 inches, depending on the truck’s trim level. The table below shows factory tire sizes for the 2019-2025 GMC Sierra 1500, along with flotation size conversions to help make shopping for off-road tires easy.
| Diameter | Standard Sizing | Flotation Sizing |
|---|---|---|
| 17 Inch | 255/70R17 | 31.06 x 10.04 x 17 |
| 17 Inch | LT265/70R17 | 31.61 x 10.43 x 17 |
| 17 Inch | 265/70R17 | 31.61 x 10.43 x 17 |
| 18 Inch | 265/65R18 | 31.56 x 10.43 x 18 |
| 18 Inch | 275/65R18 | 32.07 x 10.83 x 18 |
| 20 Inch | 275/60R20 | 32.99 x 10.83 x 20 |
| 22 Inch | 275/50R22 | 32.83 x 10.83 x 22 |
*Note: The Light Truck designation is denoted with LT.
*Note: All sizing options come equipped on both pre-facelift and facelifted models.
When To Replace Tires
The two things that affect tires are time and mileage. Naturally, the compounds on tires have a limited lifespan as they begin to breakdown over time. The mileage on a tire is only a general indication of it’s wear and usage. Neither time nor mileage are accurate indicators of a tire’s usability. The reason for that is because factors such as tire storage and care can improve or diminish lifespan. Typically most tires are manufactured to last at least five years under normal circumstances. If your tires are older than 5 years, it may be a good idea to consider replacements.
How To Read Sierra 1500 Tires
Reading the sidewall and understand tire sizing options can seem difficult at first. Once you learn the basics of what these numbers and markings mean, it becomes much simpler. Oftentimes original equipment tires use standard sizing designations, such as 255/70R17. However, when upgrading tires, especially for the GMC Sierra 1500, you may come across flotation sizing designations. These will typically read as 35×12.50×17.
FAQ
How often should Sierra 1500 tires be rotated?
Most tire manufacturers will give a suggested rotation interval. The OEM tire rotation interval for the GMC Sierra 1500 is 7,000 to 10,000 miles. Regularly rotating your tires is a great way to extend the life of your tires. Learn more about proper off-road tire rotation.
What are the best tires for the GMC Sierra 1500?
The Sierra is a purpose-built truck. The best tires heavily depend on your driving style, temperature, and weather. For example, a driver who often drives on unpaved or off-road situations would require a different tire than a driver who only uses their truck for commuting.
What is the best tire pressure?
There is no one answer to this question. Every truck and every tire require a different tire pressure. The best way to find what tire pressure is required is to check the driver's side door for a label that displays the recommended tire pressure for that vehicle. It's important to note that this recommendation changes depending on the load of passengers, as well a cargo load. Learn more about light truck load ratings.
How long do Sierra 1500 tires last?
Every tire has a UTQG rating that provides information regarding number of miles the tire is expected to last. However, this number is an estimate. How you drive your vehicle has a big impact on the life expectancy of a tire.
Are Off-Road Tires Beneficial?
As stated above, the way you plan on driving your GMC Sierra will help you make a better decision on what tires to choose. If off-roading and driving on unpaved roads is a normal occurrence, then dedicated off-road tires may be beneficial.