Why Tire Condition Matters More in Spokane
Spokane drivers face road conditions that most of the country doesn't: black ice from November through March, roads pockmarked by freeze-thaw potholes, and summer temperatures that soften asphalt. Tires are the only thing connecting your car to the road, and worn tires are one of the leading causes of accidents in winter weather. Here's how to know when it's time for new ones.
1. The Penny Test (Tread Depth)
Insert a penny into the tread groove with Lincoln's head facing down. If you can see the top of Lincoln's head, your tread is below 2/32" and the tire is legally bald. But for Spokane winters, many safety experts recommend replacing tires at 4/32" — half-worn tires lose significant grip on wet and icy roads.
2. Uneven Wear Patterns
Check the inner and outer edges of each tire:
- Worn on both edges — underinflation. The tire runs on its shoulders.
- Worn in the center — overinflation. The tire balloons in the middle.
- Worn on one edge only — alignment problem. This also means your other tires are wearing unevenly.
- Cupped or scalloped wear — worn shocks or struts bouncing the tire against the road.
Uneven wear means you're replacing tires sooner than necessary and there's an underlying issue to fix.
3. Visible Cracks or Bulges
Cracks in the sidewall mean the rubber is aging and drying out — common on tires over 5–6 years old regardless of tread depth. A bulge in the sidewall means the internal structure is damaged, usually from a pothole impact. Bulges can blow out without warning. Replace immediately.
4. Vibration at Highway Speed
If your steering wheel shakes at 55–70 mph, the tires may be out of balance, have a flat spot, or have internal damage. A balance check is cheap; if the vibration persists after balancing, the tire may need to be replaced.
5. Your Tires Are Over 6 Years Old
Rubber degrades with age even if the tread looks fine. The DOT date code on the sidewall tells you the manufacturing week and year (e.g., "2219" means week 22 of 2019). Most tire manufacturers recommend replacement after 6 years regardless of wear.
6. Hydroplaning or Sliding in Rain
If your car feels like it's floating on wet roads or slides when braking in light rain, your tread can't channel water fast enough. This is a clear sign the tires need replacement — and in Spokane's wet spring weather, it's dangerous.
All-Season vs. Winter Tires for Spokane
All-season tires are a compromise — acceptable in mild conditions but not truly optimized for winter. Dedicated winter tires use softer rubber compounds and deeper siping that grip snow and ice far better. If you commute in Spokane through the winter, a set of winters on spare rims is the safest investment you can make.
Need a Professional Opinion?
We inspect tires as part of every service at All Motors Center. If you're not sure about your tire condition, stop by 3310 E Trent Ave or call (509) 655-7715 — we'll measure tread depth, check for damage, and give you an honest recommendation.