2023 Lexus RX Tire Size Factory tire sizes, bolt pattern & tire pressure
Tire Sizes
235/60R18, 235/50R21
Bolt Pattern
5x114.3
Offset
35-45
Tire Pressure
35/35 PSI
Tire Sizes by Trim
| Trim | Tire Size | Bolt Pattern | Pressure (F/R) |
|---|---|---|---|
| RX 350 | 235/60R18 | 5x114.3 | 35/35 PSI |
| RX 350 F Sport | 235/50R21 | 5x114.3 | 35/35 PSI |
| RX 350h/RX 500h | 235/60R18 | 5x114.3 | 35/35 PSI |
Alternative Tire Sizes
These sizes are within 3% diameter of the factory 235/60R18 and may fit the 2023 Lexus RX.
255/60R17 Safe
0.2% · +20mm · -1" rim 255/55R18 Safe
0.2% · +20mm · same rim 255/50R19 Safe
0.2% · +20mm · +1" rim 255/45R20 Safe
0.2% · +20mm · +2" rim 235/65R17 Safe
0.3% · same width · -1" rim 235/55R19 Safe
0.3% · same width · +1" rim 235/70R16 Safe
0.5% · same width · -2" rim 225/75R16 Safe
0.6% · -10mm · -2" rim
Related Comparisons
225/65R17 vs 235/60R18 SUV plus-one rim upgrade 235/60R18 vs 245/60R18 SUV width upgrade on 18s 235/60R18 vs 235/55R19 Plus-one same width 235/60R18 vs 255/55R19 SUV width and rim upgrade 215/65R17 vs 235/60R18 Compact SUV plus-one wider 225/60R18 vs 235/60R18 SUV width upgrade on 18s 235/65R17 vs 235/60R18 SUV plus-one same width
Tire Maintenance Tips for the Lexus RX
Proper tire maintenance extends tire life and keeps your 2023 Lexus RX safe on the road. Follow these guidelines from NHTSA:
- Check tire pressure monthly — the Lexus RX requires 35/35 PSI (front/rear). Check when tires are cold, before driving.
- Rotate tires every 5,000–7,500 miles — this ensures even wear across all four tires, especially important for vehicles with staggered setups.
- Inspect tread depth regularly — the legal minimum is 2/32", but most experts recommend replacing tires at 4/32" for adequate wet traction.
- Check the DOT date code — tires older than 6 years should be inspected by a professional, regardless of tread depth. The 4-digit DOT code on the sidewall shows the week and year of manufacture.
Choosing Alternative Tires
When replacing tires on your 2023 Lexus RX, stay within 3% of the factory tire's overall diameter to avoid affecting your speedometer accuracy, ABS calibration, and traction control. The factory bolt pattern (5x114.3) and offset (35-45) must also match.
Always verify any alternative size with a qualified tire professional before purchase. For more information on tire safety, see the NHTSA Tire Ratings Search.