Spec Sizes

2018 Buick Regal TourX 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.

  • Tire size235/50R18
235/50R18Section width 235 mmSidewall ~118 mm(50% of width)Rim 18"235/50R18235 = width50 = aspectR18 = rim
OEM code 235/50R18: section 235 mm · aspect 50% · rim 18"

All confirmed configurations

SizePositionWidthAspectRimLoadSpeed
235/50R18 (run-flat)Front / all2355018"97V