2018 GMC Sierra Tire Pressure & Sizes


On this page you can first find a list of the trims for the 2018 GMC Sierra along with the tire sizes you can expect to find on them.

Once you have your correct tire size you can then scroll down to the pressures chart and cross-reference it to find the recommended front and rear pressure rating.

Trim Size Icon 2018 GMC Sierra Trims

GMC Sierra models built during 2018 were offered in the following trims with these tire sizes fitted as standard.

Trim Name Tire Size/s
1500 2wd Crew Cab

  • 255/70R17 Pressure Icon Cart Icon
  • 265/70R17 Pressure Icon Cart Icon
  • 265/65R18 Pressure Icon Cart Icon
  • 275/55R20 Pressure Icon Cart Icon
  • 285/45R22 Pressure Icon Cart Icon
1500 2wd Crew Cab w/Performance Brake

  • 275/55R20 Pressure Icon Cart Icon
  • 285/45R22 Pressure Icon Cart Icon
1500 2wd Double Cab

  • 255/70R17 Pressure Icon Cart Icon
  • 265/70R17 Pressure Icon Cart Icon
  • 265/65R18 Pressure Icon Cart Icon
  • 275/55R20 Pressure Icon Cart Icon
  • 285/45R22 Pressure Icon Cart Icon
1500 2wd Double Cab w/Performance Brake

  • 275/55R20 Pressure Icon Cart Icon
  • 285/45R22 Pressure Icon Cart Icon
1500 2wd Reg Cab w/Performance Brake

  • 275/55R20 Pressure Icon Cart Icon
  • 285/45R22 Pressure Icon Cart Icon
1500 2wd Regular Cab

  • 255/70R17 Pressure Icon Cart Icon
  • 265/70R17 Pressure Icon Cart Icon
  • 265/65R18 Pressure Icon Cart Icon
  • 275/55R20 Pressure Icon Cart Icon
  • 285/45R22 Pressure Icon Cart Icon
1500 4wd Crew Cab

  • 255/70R17 Pressure Icon Cart Icon
  • 265/70R17 Pressure Icon Cart Icon
  • 265/65R18 Pressure Icon Cart Icon
  • 275/55R20 Pressure Icon Cart Icon
  • 285/45R22 Pressure Icon Cart Icon
1500 4wd Crew Cab w/Performance Brake

  • 275/55R20 Pressure Icon Cart Icon
  • 285/45R22 Pressure Icon Cart Icon
1500 4wd Double Cab

  • 255/70R17 Pressure Icon Cart Icon
  • 265/70R17 Pressure Icon Cart Icon
  • 265/65R18 Pressure Icon Cart Icon
  • 275/55R20 Pressure Icon Cart Icon
  • 285/45R22 Pressure Icon Cart Icon
1500 4wd Double Cab w/Performance Brake

  • 275/55R20 Pressure Icon Cart Icon
  • 285/45R22 Pressure Icon Cart Icon
1500 4wd Reg Cab w/Performance Brake

  • 275/55R20 Pressure Icon Cart Icon
  • 285/45R22 Pressure Icon Cart Icon
1500 4wd Regualar Cab

  • 255/70R17 Pressure Icon Cart Icon
  • 265/70R17 Pressure Icon Cart Icon
  • 265/65R18 Pressure Icon Cart Icon
  • 275/55R20 Pressure Icon Cart Icon
  • 285/45R22 Pressure Icon Cart Icon
2500 HD 2wd Crew Cab

  • 245/75R17 Pressure Icon Cart Icon
  • 265/70R18 Pressure Icon Cart Icon
  • 265/60R20 Pressure Icon Cart Icon
2500 HD 2wd Double Cab

  • 245/75R17 Pressure Icon Cart Icon
  • 265/70R18 Pressure Icon Cart Icon
  • 265/60R20 Pressure Icon Cart Icon
2500 HD 2wd Regular Cab

  • 245/75R17 Pressure Icon Cart Icon
  • 265/70R18 Pressure Icon Cart Icon
2500 HD 4wd Crew Cab

  • 245/75R17 Pressure Icon Cart Icon
  • 265/70R18 Pressure Icon Cart Icon
  • 265/60R20 Pressure Icon Cart Icon
2500 HD 4wd Crew Cab All Terrain X

  • 275/65R18 Pressure Icon Cart Icon
2500 HD 4wd Double Cab

  • 245/75R17 Pressure Icon Cart Icon
  • 265/70R18 Pressure Icon Cart Icon
  • 265/60R20 Pressure Icon Cart Icon
2500 HD 4wd Regular Cab

  • 245/75R17 Pressure Icon Cart Icon
  • 265/70R18 Pressure Icon Cart Icon
3500 HD 2wd

  • 265/70R18 Pressure Icon Cart Icon
3500 HD 2wd Dually

  • 235/80R17 Pressure Icon Cart Icon
3500 HD 4wd

  • 265/70R18 Pressure Icon Cart Icon
3500 HD 4wd Dually

  • 235/80R17 Pressure Icon Cart Icon

Tire Pressure Icon 2018 Sierra Tire Pressures By Size

GMC Sierra models built in 2018 with the following tire sizes are recommended to be kept at the following pressures.

Tire Size Front Rear
265/65R18 114S 35 PSI 35 PSI
LT265/70R17/C 112Q

"LT" tires are designed for "light-trucks" carrying loads such as pickups

45 PSI 45 PSI
P255/70R17 110S

"P" tires are designed for carrying "passengers" only

35 PSI 35 PSI
P265/65R18 112T

"P" tires are designed for carrying "passengers" only

35 PSI 35 PSI
P265/70R17 113S

"P" tires are designed for carrying "passengers" only

35 PSI 35 PSI
P275/55R20 111S

"P" tires are designed for carrying "passengers" only

32 PSI 32 - 35 PSI
P285/45R22 110H

"P" tires are designed for carrying "passengers" only

35 PSI 35 PSI
LT245/75R17/E 121R

"LT" tires are designed for "light-trucks" carrying loads such as pickups

60 PSI 80 PSI
LT265/60R20/E 121S

"LT" tires are designed for "light-trucks" carrying loads such as pickups

60 PSI 75 PSI
LT265/70R18/E 124S

"LT" tires are designed for "light-trucks" carrying loads such as pickups

60 - 65 PSI 80 PSI
LT235/80R17/E 117R

"LT" tires are designed for "light-trucks" carrying loads such as pickups

70 - 80 PSI 65 PSI

What Do These Numbers Mean?

When comparing tires you will find that they display various numbers and codes along the edges.

These numbers help you choose the right tire (size and speed rating) for your car and the following image shows you what each of them mean:

Tire codes guide

GMC Sierra

GMC Sierra Image

We have found 23 different tire sizes for the 2018 GMC Sierra as well as the correct pressure to inflate them to.