1. 🛞 Winter Tires
In Latvia, winter tires are mandatory from December 1 to March 1 (recommended from November). Choosing the right tires is the most critical element of winter preparation.
Tread Depth
Legal minimum — 4 mm in winter. But for safe driving, at least 5-6 mm is recommended. Below 4 mm — tires must be replaced.
Tire Age
Tires older than 5-6 years lose elasticity and grip. Check the DOT code — last 4 digits show manufacturing week and year (e.g., 2523 = week 25, 2023).
Studded or Friction?
Studded tires — better on ice. Friction (Nordic) tires — quieter and better on wet asphalt. In Latvia, where city roads are cleared, friction tires are often a better choice.
Tire Pressure
Check pressure more often in winter — cold reduces it (~0.1 bar per 10°C). Find correct pressure on the door sticker or in the owner's manual.
💡
Switch tires when average daily temperature consistently drops below +7°C. Summer tires lose elasticity and grip below this temperature.
2. 🔋 Battery
Battery is the most common reason a car won't start in winter. Cold reduces battery capacity by 30-50%, while the engine needs more energy to start.
Check Age
Average battery life — 4-5 years. If older — replace before winter.
Voltage Test
A healthy battery shows 12.4-12.7V (engine off). Below 12.2V — charge or replace. Free testing — available at almost any auto parts store.
Clean Terminals
Clean oxidation from battery terminals (white/green buildup). Use a wire brush and apply special grease.
Alternator Check
Alternator should charge the battery while driving (13.8-14.4V with engine running). If less — alternator may be faulty.
💡
If the car sits for more than a week in cold weather — connect a trickle charger. It costs ~€30-50 and prevents discharge.
3. 💧 Fluids & Oils
In winter, fluids must withstand low temperatures. Wrong fluids can freeze and damage the system.
Coolant (Antifreeze)
Must protect to at least -35°C. Check with a refractometer or hydrometer (free testing at auto stores). Replace every 2-3 years.
Windshield Washer Fluid
Use winter fluid rated to at least -20°C. Never use water — it freezes and cracks the reservoir and hoses.
Engine Oil
Lower viscosity oil recommended in winter (e.g., 5W-30 or 0W-30 instead of 10W-40). Check your owner's manual.
Brake Fluid
Brake fluid absorbs moisture over time, which can freeze in the brake system. Replace every 2 years.
4. 🛡️ Body Protection
Salt and reagents on Latvian roads are the main enemy of your car's body. Proper protection can save thousands in repairs.
Wax Coating
Apply quality wax or ceramic coating before winter. It protects paint from salt, chemical reagents, and mechanical damage.
Underbody Treatment
Anti-corrosion treatment for the car's underside (e.g., Dinitrol or Tectyl). Costs ~€100-200 but protects against rust for years.
Rubber Care
Treat door and window seals with silicone. This prevents freezing shut and extends seal life.
Regular Washing
Wash the car at least every 2 weeks in winter, especially the underside. Salt accumulation accelerates corrosion.
5. 👁️ Visibility & Lights
In winter, daylight hours in Latvia are only 7-8h (December). Good visibility is critical.
6. 🎒 Emergency Kit
In Latvian winter, you should always be prepared for unexpected situations. Keep this kit in the trunk.
Jump cables
To help start a car with a dead battery (or receive help from others)
Shovel
Small folding shovel for digging snow around wheels
Tow rope
If you get stuck in snow or a ditch
Blanket and warm clothes
If you need to wait for help in the cold for a long time
Flashlight
With charged batteries or rechargeable
Ice scraper
A good, wide scraper (not the thin plastic kind)
Snow chains or socks
If you often drive outside the city or in hilly areas
De-icer spray
De-icer aerosol — faster than scraping
7. 🚗 Winter Driving Tips
Even with the best tires and a well-prepared car — winter driving requires caution.
Increase Following Distance
Braking distance on wet/icy road is 3-10x longer. Keep at least 4-5 seconds distance from the car ahead.
Brake Early
Start braking much earlier than in summer. If no ABS — use pulse braking (press/release).
Avoid Sudden Movements
Sharp steering, harsh braking or acceleration on slippery road causes skidding.
Use Engine Braking
Downshift when going downhill or approaching intersections. Safer than brakes on ice.
Warm Up the Engine
Give the engine 30-60 seconds before driving (no more — not needed for modern cars). Drive gently for the first 5-10 km.
Keep Tank at Least Half Full
A half-full tank reduces condensation in the fuel system and ensures heating if you get stuck.
8. ✅ Full Winter Checklist
Print and check off each point when preparing your car for winter.
🛞 Tires
🔋 Battery
💧 Fluids
🛡️ Body
👁️ Visibility
🎒 Kit
❓ Frequently Asked Questions
When should you start preparing for winter?
Ideally — in October. Winter tires should be installed when average temperature drops below +7°C (usually late October / early November). Do battery, fluid, and body checks in October to have time to fix problems before the first frosts.
How much does winter car preparation cost?
Basic preparation: tire change (€20-40), washer fluid (€5-10), body wax (€15-30 DIY, €50-100 at car wash). Additional: battery replacement (€80-150), underbody treatment (€100-200). Total: €40-80 basic or €200-400 full.
Can you use summer tires in winter?
No! In Latvia, winter tires are mandatory from December 1 to March 1. Fine — up to €30. But more importantly — summer tires lose elasticity below +7°C, and braking distance on wet road increases by 50-80%, and on ice — several times over.
How often should you wash the car in winter?
At least every 2 weeks, ideally weekly, especially after heavy salt spreading. Always wash the underside too. Choose a car wash with underbody washing. Don't wash if temperature is below -10°C — fluid can freeze on the body.
Do you need different engine oil in winter?
If you live in Latvia and use 5W-30 or 0W-30 oil — it's suitable for winter too. If you use 10W-40 — switch to 5W-30 in winter (better cold flow). Always check your owner's manual.
What to do if the car won't start on a cold morning?
Don't crank the starter for more than 10 seconds. Wait 30 seconds and try again. If it doesn't work — try jump cables from another car. If that doesn't help either — the battery is likely dead and needs replacing. Call roadside assistance.