What size are the bolts on a Lexus IS300?
The wheel bolts (lug hardware) on a Lexus IS300 are a 5-lug setup with a 114.3 mm bolt pattern, using M12 x 1.5 lug nuts with a conical seat, and a hub bore of 60.1 mm. OEM lug nuts usually require a 19 mm socket for installation or removal.
When people ask about “bolts” on the IS300, they may be referring to wheel hardware or other fasteners across the vehicle. This article focuses on standard wheel lug hardware for factory wheels, while noting that aftermarket wheels or different markets can introduce variations.
Wheel lug bolt/specs for the IS300
Below are the core wheel-hardware specs you are likely to encounter on a stock IS300. If you have aftermarket wheels, verify compatibility with your specific setup.
- Bolt pattern (PCD): 5 on 114.3 mm (5x114.3).
- Lug thread size: M12 x 1.5.
- Lug seat type: conical (60-degree) seat, as used on many Toyota/Lexus wheels.
- Center bore (hub bore): 60.1 mm.
- OEM lug nut hex size: typically 19 mm (socket size for removal/installation); some aftermarket lug nuts or wheels may require a different size, such as 21 mm.
In practice, you’ll tighten the five lug nuts per wheel to the manufacturer’s torque specification or wheel-manufacturer guidance. Always use the correct sequence and recheck torque after driving a short distance.
Other bolts on the IS300
The IS300 contains many bolts across the engine, exhaust, suspension, and chassis. Sizes vary by component and model year, and incorrect sizing can cause damage. If you’re working on bolts outside the wheel area (for example, engine or exhaust fasteners), consult the official service manual or a qualified technician for the exact thread pitch, length, and torque specs for your exact year and market.
Providing your model year, market, and the specific bolt you’re dealing with will help practitioners give precise sizes and torque values.
Summary
What is the bolt pattern on a Lexus IS300?
The lug pattern for all Lexus IS300 models is 5x114.3mm (also written as 5x4.5 inches). This is a 5-lug pattern with a bolt circle diameter of 114.3mm, and it is a very common and popular bolt pattern used by many other vehicles.
- Lug pattern: 5x114.3mm (5x4.5")
- Number of lugs: 5
- Center bore: 60.1mm
What is the torque spec on a Lexus IS300 lug nut?
The correct lug nut torque for a Lexus IS300 is 76 lb-ft (103103103 Nm). It's crucial to tighten the lug nuts in a star pattern using a calibrated torque wrench and to re-check the torque after driving 50-100 miles.
- Torque Specification: 767676 lb-ft (103103103 Nm).
- Tightening Pattern: Always use a crisscross or star pattern to ensure even pressure on the wheel.
- Re-Torque: After installing wheels, re-check the lug nut torque after 50-100 miles to account for any settling.
- Tools: Use a calibrated torque wrench to avoid under- or over-tightening, which can damage studs or cause wheels to loosen.
What size are the lug nuts on a Lexus IS300?
LEXUS IS300 CHROME LUG NUTS 20PCS 12X1. 5 THREAD FITS ALL MODELS.
What size socket for Lexus lug nuts?
The most common Lexus lug nut socket size is 21mm (or 13/16"), but some models may use a 19mm socket. It is best to check your owner's manual or verify the size for your specific vehicle model and year, especially if you have an aftermarket wheel or lug nuts.
- Common size: 21mm (13/16") for many Lexus models, including the RX and UX.
- Other size: 19mm for some Lexus models, such as the IS250.
- Thread size: Lexus factory lug nuts typically have a thread size of M12x1.5mm.
- Verification: Always double-check your vehicle's specific model and year, as sizes can vary, especially with aftermarket parts.
