Spec Sizes

2018 Chevrolet Silverado 3500HD 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.

  • Option265/70R18
  • Option275/65R20
265/70R18Section width 265 mmSidewall ~186 mm(70% of width)Rim 18"265/70R18265 = width70 = aspectR18 = rim
OEM code 265/70R18: section 265 mm · aspect 70% · rim 18"

All confirmed configurations

SizePositionWidthAspectRimLoadSpeed
265/70R18Front / all2657018"114S
275/65R20Front / all2756520"110H