1999 Buick Riviera Wheel Interchange

OEM wheel and tire fitment specs for the 1999 Buick Riviera, including bolt pattern (PCD), center bore diameter, thread size, rim diameter, rim width, wheel offset, and backspacing.

1999 Buick Riviera Fitment Specs

Baseline mounting dimensions used for interchange decisions.

Bolt Pattern5x115
Center Bore70.3 mm
Lug ThreadM12 x 1.5
OEM Wheel SizesNot fully verified in current dataset
OEM WidthsNot fully verified in current dataset
OEM Offset RangeNot fully verified in current dataset

Wheels That Interchange With a 1999 Buick Riviera

Results are evaluated from bolt pattern, center bore direction, OEM width/offset envelope, and lug hardware – not bolt pattern alone.

No high-confidence interchangeable vehicles found in the current dataset. Use the calculator below to check a specific donor vehicle or wheel.

Buick Riviera Years With Compatible Wheels

Only years with evidence-based interchange relationships are listed. Adjacent years are not assumed compatible.

No same-model compatible years were found in the current dataset for the 1999 Buick Riviera.

Will Wheels From Another Vehicle Fit?

Compare a donor vehicle or custom wheel against this 1999 Buick Riviera.

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Compare wheel compatibility between two vehicles

Wheels from (donor vehicle)

Installed on (your vehicle)

Selected Car:

1999 Buick Riviera

Compare Rims

Specification
Wheels from
Installed on
Result (Click it)
Bolt Pattern
Bolt Pattern
The total number of bolt holes and the diameter of the circle they form.
-
5x115
Center Bore
Center Bore
The hole in the center of the wheel that fits over the vehicle’s hub.
-
70.3 mm
Thread Size
Thread Size
The size and spacing of the threads on the bolts or nuts that hold the wheel in place.
-
M12 x 1.5
Rim Diameter
Rim Diameter
The wheel diameter in inches that determines which tire sizes will fit.
-
-
Rim Width
Rim Width
The distance between the inner edges of the wheel is measured in inches.
-
-
Wheel Offset
Wheel Offset
How far the wheel sits inward or outward relative to the hub mounting surface.
-
-
Backspacing
Backspacing
Shows how much space the wheel takes up toward the inside of the vehicle.
-
-
Wheel Fasteners
Wheel Fasteners
The type of hardware used to secure the wheel to the vehicle.
-
-

Wheel Fitment Parts for the 1999 Buick Riviera

Products below are matched to required fitment dimensions from our parts inventory. Confirm seat style, thickness, and clearance before ordering.

Lug Nuts / Wheel Bolts

M12 x 1.5

Wheel Adapters

5x115 · 70.3 mm hub

Directional bolt-pattern adapters. A spacer does not change PCD.

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Why These Wheels Fit

Wheel interchange depends on more than bolt pattern. Where data is available, this site compares:

  • Bolt pattern / PCD
  • Center bore direction (donor wheel bore must not be smaller than the hub)
  • Wheel diameter, width, and offset against known OEM ranges
  • Lug thread / hardware differences (vehicle-side hardware)

A normal wheel spacer does not change bolt pattern. Hub rings cannot enlarge a wheel bore that is smaller than the hub. Brake clearance and tire package fitment still require vehicle-specific checks when not confirmed in the dataset.

tl;dr

Buick Riviera 1999 has bolt pattern 5x115, center bore 70.3 mm, and lug thread M12 x 1.5. Rim diameter, rim width, offset, backspacing, and tire sizes are not provided here. Use the on-page calculator and OEM sources to confirm those unknowns before buying wheels or tires.

Recommendation

Start by confirming the missing wheel and tire dimensions. Use the vehicle placard, owner’s manual, dealer fitment, or physically measure your current wheels and tires. Then use the on-page calculator to compare donor wheels to your Riviera and to test custom wheel and tire combinations. If you buy wheels, match the bolt pattern and center bore, and verify lug-nut seat type and thread are compatible with M12 x 1.5.

Impact

Correctly matched wheels preserve steering, handling, and safety. Proper center bore and bolt pattern ensure wheels mount concentrically and securely. Right rim width and offset keep fenders clear and maintain steering geometry. Incorrect choices cause rubbing, altered vehicle dynamics, or premature wear.

Risks

  • Hub-centric mismatch can cause vibration if center bore is not addressed.
  • Wrong offset or width may cause tire rub or suspension interference.
  • Using incorrect lug-nut seat or thread risks stud damage or wheel loss.
  • Spacers or adapters introduce extra failure points and require grading.
  • Tire diameter changes can affect speedometer and ABS calibration.

Next actions

Follow this checklist to finish fitment safely and quickly.

  • Check the vehicle placard or owner’s manual for OEM rim and tire specs.
  • Measure your current rim diameter, rim width, and backspacing if unknown.
  • Use the on-page calculator: compare donor vs installed, and test custom sizes. The calculator updates tire diameter when rim diameter changes.
  • Confirm lug nut seat type and torque spec with OEM sources or service manual. Thread size is M12 x 1.5 for the Riviera.
  • If center bore is larger than wheel bore, use hub-centric rings sized to 70.3 mm for proper centering.
  • Before final installation, do a trial mount, torque lug nuts to spec, and road-test checking for vibration or rubbing.

Checklist gotchas: do not assume wheels are hub-centric just because bolt pattern matches. When specs vary by trim, consult the calculator and OEM sources to confirm fitment for your exact Riviera configuration.

Tools and parts you may need: torque wrench, hub-centric rings, correct-seat lug nuts. Search examples:

Reference table

Item Value
Bolt pattern 5x115
Center bore 70.3 mm
Thread size M12 x 1.5
Rim diameter Unknown – confirm with placard or measure
Rim width Unknown – confirm with measurement or OEM data
Offset (ET) Unknown – use calculator to test options
Backspacing Unknown – measure if needed
Tire sizes Unknown – verify placard or use calculator for swaps

Next steps resolved: gather the missing dimensions, run comparisons in the calculator, and confirm lug-seat and torque specs with OEM documentation. Follow the checklist and safety items before driving on new wheels.

Nick Marchenko

Automotive Expert