2013 Buick Regal Bolt Pattern & Tire Size
The 2013 Buick Regal OEM tire size, bolt pattern, and wheel specifications are listed below. All data is based on industry-standard OEM reference specifications.
The 2013 Buick Regal has a 5x120 bolt pattern, an OEM tire size of 245/40R19, and a 67.1mm center bore.
Other years of the Buick Regal
2013 Buick Regal Engine & Trim Levels
Detailed tire and wheel breakdown for the 2013 Buick Regal
Tire geometry â 245/40R19
The 245/40R19 fitted to the 2013 Buick Regal has a section width of 245mm and an aspect ratio of 40%, mounted on a 19-inch rim. That gives a sidewall height of 98.0mm (3.86") and an overall outside diameter of 678.6mm (26.72"). At highway speed this tire completes roughly 469 revolutions per kilometre, which is what your speedometer and odometer are calibrated against.
Plus-sizing window
If you want to upsize wheels on the 2013 Buick Regal while keeping the speedometer accurate, target a 255/33R20 (plus-one). For a softer ride or winter setup, a 235/47R18 (minus-one) keeps the overall diameter within Âą3% of stock, which is the industry tolerance for ABS and stability control to stay calibrated.
Wheel fitment specs
The 2013 Buick Regal uses a 5x120 bolt pattern with a 67.1mm hub bore. Safe rim width range for the OEM tire is 8.0J â 9.0J, and offsets in the ET40 â ET50 window will clear suspension and fender without rubbing on most setups.
Tire pressure guidance
Manufacturer-recommended cold tire pressure for the 2013 Buick Regal is printed on the driver-side door jamb sticker â always defer to that value, not to the maximum pressure printed on the tire sidewall. Check pressure monthly and before long trips; under-inflation by 20% can reduce tread life by 25%.
OEM Wheel & Tire Specs
Frequently Asked Questions
What tire size does the 2013 Buick Regal GS use?
The 2013 Buick Regal GS uses 245/40R19 tires as standard equipment.
What is the bolt pattern of the 2013 Buick Regal?
The 2013 Buick Regal has a 5x120 bolt pattern with a center bore of 67.1mm.
What is the wheel offset of the 2013 Buick Regal?
The 2013 Buick Regal has a wheel offset of ET45.
Other Vehicles with 5x120 Bolt Pattern
The following vehicles share the same 5x120 bolt pattern as the 2013 Buick Regal, making wheel interchangeability possible (verify offset and center bore before swapping).