2021 Buick Regal TourX Wheel & Tire Sizes
Complete fitment guide for the 2021 Buick Regal TourX: factory tire sizes, compatible wheel diameters, widths and offsets, and the 5x115 bolt pattern, for every trim.
Bolt Pattern
5x115
Centre Bore
70.3 mm
Lug nuts
M12 x 1.5
Wheel Diameters
18"–22"
Factory (OEM) Tire Sizes for the 2021 Buick Regal TourX
Click any size to shop tires in stock now, free shipping anywhere in Canada, optional installation at our 5 GTA locations.
2021 Buick Regal TourX Wheel Fitment by Trim
Compatible wheel diameter, width and offset ranges for each 2021 Buick Regal TourX configuration.
2.0T · Estate, 5d
2.0L · I4 · Petrol
| Spec | Front & Rear |
|---|---|
| Wheel diameter | 18–22" |
| Wheel width | 8–9" |
| Wheel offset | 34–45 mm |
| Tire width | 235–245 mm |
2021 Buick Regal TourX Fitment FAQ
What is the bolt pattern on a 2021 Buick Regal TourX?
The 2021 Buick Regal TourX uses a 5x115 bolt pattern (5 lug nuts on a 115 mm circle) with a 70.3 mm centre bore.
What size tires fit a 2021 Buick Regal TourX?
Factory (OEM) tire sizes for the 2021 Buick Regal TourX include 235/50R18, 245/45R18, 245/40R19, 245/35R20. Always confirm against the placard inside the driver's door jamb.
What wheel sizes can I put on a 2021 Buick Regal TourX?
Depending on trim, the 2021 Buick Regal TourX accepts wheels from 18" up to 22" in diameter with the correct width and offset, larger diameters typically require lower-profile tires to keep the overall rolling diameter stock.
What lug nut size does a 2021 Buick Regal TourX use?
The 2021 Buick Regal TourX uses M12 x 1.5 lug nuts.
Fitment data is provided as a guide. Always verify sizes against your vehicle's door-jamb placard or with our fitment experts before ordering.