1. Tire Pressure: The Most Overlooked Safety Factor

Tire pressure is the single most important factor for tire life and safety. Check it at least once a month — cold, before long trips, and whenever seasons change.

• Under-inflation: fast shoulder wear, higher fuel consumption, overheating at speed, and increased blowout risk.

• Over-inflation: fast center wear, reduced grip, harsher ride, and higher risk of impact bulge.

• Where to find the correct pressure: the B-pillar sticker, fuel filler flap, or owner's manual — not the maximum value on the sidewall.

• Seasonal change: for every 10°C drop in temperature, pressure drops about 0.1 bar (7 kPa). Re-inflate in winter; no need to deflate in summer — just use the standard value.

Recommended frequency: monthly + before every long trip.

2. Wear & Aging: When to Replace

1. Tread depth

Tread wear indicators (TWI) sit inside the grooves — when the tread wears level with them, remaining depth is ~1.6mm, the legal minimum. In practice, wet grip and drainage already drop noticeably below 3mm — replace earlier rather than waiting for the limit.

2. Aging

Rubber ages even with deep tread. Check the DOT code's last four digits: 2625 = week 26 of 2025. Replace tires older than 5–6 years, especially on vehicles parked outdoors under heavy sun.

3. Damage

• Bulge on sidewall = broken internal cords. Not repairable — replace immediately.

• Cuts reaching the cords or deeper than the tread pattern: do not continue using.

• Uneven wear on one edge: usually an alignment or suspension issue — fix the vehicle before fitting new tires.

3. Rotation, Alignment & Balancing

1. Rotation

Rotate every 8,000–10,000 km to even out wear. Follow the owner's manual for cross or same-side patterns. Directional/asymmetric tires must respect sidewall mounting marks.

2. Wheel alignment

Check alignment when: the vehicle pulls to one side, tires show edge or sawtooth wear, or after suspension repairs/impacts.

3. Balancing

Always re-balance after a puncture repair or new tire installation. Steering or body vibration in a specific speed range (often 80–120 km/h) usually means balancing problems.

4. Storage: Seasonal Tire Care

Store tires properly or they'll degrade faster than in use.

• Location: cool, dry, dark — away from oil, solvents, welding and heat sources.

• Cleaning: wash off mud and dry before storage.

• Method: tires without rims should be stored upright, rotated every 1–2 months; tires on rims can be stacked or hung, inflated slightly higher (~2.5 bar).

• Mark positions before removal (e.g., front-left) to plan the next rotation.

5. Driving Habits That Extend Tire Life

• Avoid potholes and speed bumps at high speed — the #1 cause of sidewall bulges.

• Don't scrape curbs — sidewall damage can be invisible but serious.

• Reduce hard acceleration and braking.

• Before heavy loads or long trips: check pressure, appearance and the spare tire.

6. Quick Troubleshooting