2021 Acura TLX Tire Size Factory tire sizes, bolt pattern & tire pressure
Tire Sizes
235/50R18, 255/40R19
Bolt Pattern
5x120
Offset
40-50
Tire Pressure
33/33 PSI
Tire Sizes by Trim
| Trim | Tire Size | Bolt Pattern | Pressure (F/R) |
|---|---|---|---|
| Base | 235/50R18 | 5x120 | 33/33 PSI |
| A-Spec | 255/40R19 | 5x120 | 33/33 PSI |
Alternative Tire Sizes
These sizes are within 3% diameter of the factory 235/50R18 and may fit the 2021 Acura TLX.
235/55R17 Safe
0.3% · same width · -1" rim 215/60R17 Safe
0.3% · -20mm · -1" rim 235/60R16 Safe
0.6% · same width · -2" rim 255/50R17 Safe
0.8% · +20mm · -1" rim 255/45R18 Safe
0.8% · +20mm · same rim 255/40R19 Safe
0.8% · +20mm · +1" rim 255/35R20 Safe
0.8% · +20mm · +2" rim 215/65R16 Safe
0.9% · -20mm · -2" rim
Related Comparisons
245/45R18 vs 255/40R19 Plus-one sport upgrade 225/50R17 vs 235/50R18 Plus-one rim and width upgrade 235/50R18 vs 245/45R18 Wider with lower profile 245/40R18 vs 255/40R19 Performance car upgrade path 225/50R18 vs 235/50R18 Width upgrade on 18-inch 255/40R19 vs 265/35R19 Wider lower profile sport 235/50R18 vs 235/55R18 Profile height comparison 18s
Tire Maintenance Tips for the Acura TLX
Proper tire maintenance extends tire life and keeps your 2021 Acura TLX safe on the road. Follow these guidelines from NHTSA:
- Check tire pressure monthly — the Acura TLX requires 33/33 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 2021 Acura TLX, 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 (5x120) and offset (40-50) 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.