If you own a Lexus IS300, knowing the proper lug nut size and torque specs is important for safely securing your wheels and avoiding damage. In this blog post, we’ll take a close look at Lexus IS300 lug nut sizes, socket sizes, torque specs, and lug nut options to help you keep your IS300’s wheels properly secured.

OEM Lexus IS300 Lug Nut Size

The factory lug nuts on a Lexus IS300 are 12mm x 1.5 thread pitch. This is a fairly common lug nut size used on many Japanese vehicles.

Using the proper OEM-style replacement nuts is recommended to ensure proper wheel centering and avoid damage to the wheel hub mounting surface.

Socket Size for Lexus IS300 Lug Nuts

To remove or install the lug nuts, you’ll need a 19mm socket. A standard 6-point 19mm socket is preferred over a 12-point socket, as the points on 12-point sockets can round off the nut corners over time.

Impact sockets made of hardened chrome alloy steel are best for removing stubborn, stuck lug nuts without rounding them off. Make sure your socket fits snugly on the nut to avoid stripping or damaging the corners.

What size are the lug nuts on a Lexus IS300?

Lexus IS300 Lug Nut Torque Specs

Proper torque when installing nuts is critical to avoid wheel vibration and potential damage to the studs or wheel hub. Lexus specifies a tightening torque of 76 lb-ft (103 Nm) for the IS300 lug nuts.

After installing or re-installing wheels, use a torque wrench to final tighten the nuts to 76 lb-ft using a crisscross or star pattern, re-checking the torque after 50-100 miles. This ensures even contact between the wheel and hub mounting surface.

It’s also wise to re-check torque specs periodically, such as when rotating tires or after hitting a major bump, to ensure wheels remain properly secured. Over or under-tightening lug nuts can lead to problems.

Why BONOSS Lexus IS300 Lug Nuts are Best?

For replacing tired old nuts, upgrade options like BONOSS forged ISO grade 12  lug nuts offer increased security and style. Here are a few reasons why BONOSS nuts are a great choice for the Lexus IS300:

  • Made of strong forged 50BV30 steel for increased durability
  • Black coat for corrosion resistance and shiny good looks
  • The conical seat properly centers aftermarket wheels
  • Provides added protection against theft with one anti-theft nut for every wheel

BONOSS nuts offer increased security, durability, and style without breaking the bank. For peace of mind knowing your Lexus IS300’s wheels are safely secured, upgrade to BONOSS nuts.