2017 Kia Optima Lug Nut Torque & Bolt Specs

The source-backed 2017 Kia Optima lug nut torque is 79-94 ft-lbs (107-127 Nm). Match the application and hardware conditions in the cited manual; do not assume the same value applies to aftermarket hardware.

Lug nut torque: 79-94 ft-lbs (107-127 Nm).

This page distinguishes source-backed fields, unresolved conflicts and unverified legacy records for the 2017 Kia Optima. Match the exact hardware and manual conditions before maintenance. A source for one field does not verify the other specifications.

Field evidence: Lug nut torque confirmed against 2017 Kia Optima Owner's Manual (2017 Optima OM sm.pdf), p. PDF p. 441 (https://www.kiatechinfo.com/files/328/3813/2017%20Optima%20OM%20sm.pdf). OEM wheels and lug nuts as specified in the owner's manual engine: 2.0L 4-Cylinder; trim: GT-Line; axle: all Lug nut socket size is not verified; no specification is assumed. Lug nut thread size is not verified; no specification is assumed. Lug nut part number is not verified; no specification is assumed.

Lug Nut — torque: 79-94 ft-lbs (107-127 Nm) — 2017 Kia Optima Owner's Manual (2017 Optima OM sm.pdf), p. PDF p. 441. OEM wheels and lug nuts as specified in the owner's manual. Applies to: 2.0L 4-Cylinder: GT-Line (1 configuration).

Hyundai, Kia and Genesis models share many platform families, but the exact lug socket and torque can differ from one record to another. Use the value listed on this page and measure the lug nut when the socket field is blank.

Common fastener categories on the 2017 Kia Optima

Wheel / lug nut torque and thread spec (covered above)
Brake caliper bracket, mounting, and slide/guide-pin bolts are different fasteners. Confirm the exact axle, application and service-manual specification before reassembly.
Engine oil drain plug torque and tool size when this vehicle has a verified drain-plug record
Transmission pan, valve cover, and intake manifold bolts where the database has exact records
Suspension control arm, sway bar, tie rod end and ball joint torque
Spark plug torque only when a vehicle-specific spark-plug row is available
Differential cover bolts (RWD/4WD only) and transfer case fasteners

Repair guidance for this model year

For 2017 model-year work: This era introduced widespread torque-to-yield (TTY) bolts on head, main, and crank pulley fasteners. TTY bolts stretch permanently when torqued and must not be reused — the spec calls for a fresh bolt every time. Always verify TTY status against the FSM before reassembly.

Tools you will need

Metric and SAE socket set (8mm-22mm plus 1/4"-7/8"), 6-point impact-rated
Calibrated torque wrench (10-150 ft-lbs covers most automotive jobs; add a 0-250 ft-lbs wrench for truck lug nuts)
Breaker bar (24" minimum) for initial loosening
Penetrating oil (PB Blaster or Kroil) for any fastener over 5 years old
Replacement washers, threadlocker, anti-seize, or dry-thread preparation only when the exact service procedure specifies them

Frequently asked questions

What is the lug nut torque on a 2017 Kia Optima?

The source-backed lug-nut torque for the 2017 Kia Optima is 79-94 ft-lbs (107-127 Nm). Match the exact application, hardware and tightening conditions in the cited manual. Field evidence: Lug nut torque confirmed against 2017 Kia Optima Owner's Manual (2017 Optima OM sm.pdf), p. PDF p. 441 (https://www.kiatechinfo.com/files/328/3813/2017%20Optima%20OM%20sm.pdf). OEM wheels and lug nuts as specified in the owner's manual engine: 2.0L 4-Cylinder; trim: GT-Line; axle: all Lug nut socket size is not verified; no specification is assumed. Lug nut thread size is not verified; no specification is assumed. Lug nut part number is not verified; no specification is assumed.

What socket size do I need for the 2017 Kia Optima lug nuts?

Confirm the socket against the actual lug nut; no size is assumed here.

Are the 2017 Kia Optima fasteners metric or SAE?

Metric and SAE hardware can both appear on one vehicle, depending on the component and exact application. Use the individually verified field and the actual fastener or service manual rather than inferring a standard from the model year, make or generation. Bolt-head markings can help identify the hardware at the bench.

Other Kia Optima years

Same model, different model year — fastener spec may change. Always confirm against the year for your VIN.

→ 2017 Kia Optima oil drain plug torque & size

→ 2017 Kia Optima suspension & steering torque specs (control arm, ball joint, tie rod)

→ 2017 Kia Optima axle nut torque spec (CV axle & hub nut)

23 recorded 2017 Kia Optima fasteners

Per-field evidence and legacy records for the 2017 Kia Optima. A verified torque does not verify socket size, thread or part number. Unverified records are not installation instructions; conflicting specifications are withheld. 3 of the 23 records carry legacy review labels (last reviewed September 2026); those labels do not verify individual fields.

Wheels — 2017 Kia Optima

Wheel fastener records and field evidence for the 2017 Kia Optima. Lug Nut (All four wheels). Torque: 79-94 ft-lbs (107-127 Nm). Source: 2017 Kia Optima Owner's Manual (2017 Optima OM sm.pdf), p. PDF p. 441 (https://www.kiatechinfo.com/files/328/3813/2017%20Optima%20OM%20sm.pdf). OEM wheels and lug nuts as specified in the owner's manual engine: 2.0L 4-Cylinder; trim: GT-Line; axle: all Socket size: not verified. Thread: not verified. Part number: not verified.

Engine — 2017 Kia Optima

Engine fastener records and field evidence for the 2017 Kia Optima. Alternator Mounting Bolt. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified. Oil Drain Plug. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified. Valve Cover Bolt. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified. Spark Plug. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified.

Drivetrain — 2017 Kia Optima

Drivetrain fastener records and field evidence for the 2017 Kia Optima. Axle Nut Rear. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified. Axle Nut Front. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified. Transmission Mount Bolt. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified.

Suspension — 2017 Kia Optima

Suspension fastener records and field evidence for the 2017 Kia Optima. Rear Shock Absorber Lower Bolt. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified. Front Strut Top Mount Nut. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified. Front Lower Control Arm Rear Bolt. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified. Rear Shock Absorber Upper Nut. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified. Stabilizer Bar Link Nut Front. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified. Front Lower Control Arm Front Bolt. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified.

Steering — 2017 Kia Optima

Steering linkage fasteners on the 2017 Kia Optima. Steering Wheel Center Bolt. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified. Tie Rod End Nut. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified. Power Steering Pump Bolt. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified.

Body — 2017 Kia Optima

Body fasteners on the 2017 Kia Optima. Hood Hinge Bolt. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified.

Brake — 2017 Kia Optima

Brake fasteners on the 2017 Kia Optima. Rear Brake Caliper Guide Pin Bolt. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified. Front Brake Caliper Guide Pin Bolt. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified. Front Brake Caliper Bracket Bolt. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified. Rear Brake Caliper Bracket Bolt. Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified.

Oil Drain Plug — 2017 Kia Optima

Oil Drain Plug fasteners on the 2017 Kia Optima. Engine Oil Drain Plug (Oil Pan). Torque: not verified. Socket size: not verified. Thread: not verified. Part number: not verified.

New to torquing wheels? Read our How lug nut torque works — the complete guide for star-pattern sequence, re-torque intervals, and how to read a lug spec — then compare any source-backed fields on this page with the actual hardware and service manual.

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