What size tires fit a 1999 Lexus RX?

The 1999 Lexus RX uses P225/70R16 101S as the OEM tire size.

What tire pressure should a 1999 Lexus RX have?

The recommended tire pressure for the 1999 Lexus RX is 30 PSI front and 30 PSI rear (cold).

Can I use a different tire size on my 1999 Lexus RX?

It is recommended to use the OEM size P225/70R16 101S. Alternative sizes may affect speedometer accuracy, handling, and clearances.

Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

1999 Lexus RXTire Size & Pressure

OEM spec from the factory service manual for the AWD variant.

Quick Answer

OEM Tire Size

P225/70R16 101S

Pressure (Front / Rear)

30 / 30 PSI

Load Index

Source: Factory service manual — 1999 Lexus RX AWD. View full manual section →

Other specs:All specs Oil Type Coolant

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P225/70R16 101S for Lexus RX

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Frequently Asked Questions

What size tires fit a 1999 Lexus RX?: The 1999 Lexus RX uses P225/70R16 101S as the OEM tire size.
What tire pressure should a 1999 Lexus RX have?: The recommended tire pressure for the 1999 Lexus RX is 30 PSI front and 30 PSI rear (cold).
Can I use a different tire size on my 1999 Lexus RX?: It is recommended to use the OEM size P225/70R16 101S. Alternative sizes may affect speedometer accuracy, handling, and clearances.