Spec Sizes

2018 GMC Sierra 1500 Tire Size

Confirmed OEM tire sizes for this model year. Multiple sizes may apply depending on trim and wheel package — all catalog options are listed.

  • Option275/45R22
  • Option295/35R24
  • Option305/30R26
275/45R22Section width 275 mmSidewall ~124 mm(45% of width)Rim 22"275/45R22275 = width45 = aspectR22 = rim
OEM code 275/45R22: section 275 mm · aspect 45% · rim 22"

All confirmed configurations

SizePositionWidthAspectRimLoadSpeed
275/45R22Front / all2754522"98Y
295/35R24Front / all2953524"108W
305/30R26Front / all3053026"——