Memorial Day Road Trip: Last-Minute Vehicle Checks

Memorial Day Road Trip: Last-Minute Vehicle Checks

Memorial Day weekend is the unofficial start of summer road trip season, and half of Chicago seems to hit I-90 or I-94 at the same time Friday afternoon. Whether you're heading to the Wisconsin Dells, Michigan wine country, or just up to Lake Geneva for the weekend, your car is about to do something it hasn't done much of all winter: sustained highway driving.

That shift from city stop-and-go to hours of highway cruising exposes weaknesses that urban driving hides. A coolant system that's barely adequate in city traffic can overheat when the engine runs at highway RPM for three straight hours. Tires that feel fine at 35 mph on Clark Street might vibrate or shimmy at 70 mph on I-94.

Here's a 15-minute pre-trip check you can do in your driveway, plus a list of when to bring it to a shop before you go.

The 15-Minute Driveway Check

Tires (5 Minutes)

Pressure: Check all four tires plus the spare when they're cold (before driving). The correct pressure is on the sticker inside the driver's door jamb — not on the tire sidewall (that's the maximum, not the target). Proper pressure improves fuel economy, handling, and tire life. Tread depth: Use the penny test. Insert a penny head-first into the tread groove. If you can see all of Lincoln's head, you're below 2/32" and those tires shouldn't go on a highway trip. If tread is marginal, replace before the trip — especially if you'll encounter rain. Visual inspection: Look for bulges, cracks, nails, or uneven wear. A sidewall bulge is a blowout waiting to happen. Don't take it on the highway. Spare tire: When was the last time you checked it? A flat spare on I-94 near Kenosha at 8 PM on a Friday is a special kind of miserable. Check the pressure and make sure you have the jack and lug wrench.

Fluids (5 Minutes)

Engine oil: Check the dipstick. If it's low, top it off. If it's dark and gritty and you're overdue for a change, get one before the trip. Coolant: Check the overflow reservoir (NOT the radiator cap when hot). The level should be between the min and max marks. Low coolant before a highway trip is asking for trouble. Brake fluid: Check the reservoir under the hood. Low brake fluid can mean worn brake pads or a leak — neither of which you want to discover at highway speed in Indiana. Windshield washer fluid: Top it off. Bug splatter at 70 mph on a summer evening can obscure your windshield in seconds.

Lights and Wipers (3 Minutes)

Headlights, tail lights, turn signals, brake lights: Turn them all on and walk around the car. Have someone press the brake pedal while you check the rear. A burned-out brake light is both a safety hazard and a ticket magnet in Wisconsin and Indiana. Wipers: If they streak or chatter, replace them. Summer storms pop up fast, and bad wipers on a highway in heavy rain is genuinely dangerous.

Under the Hood Quick Look (2 Minutes)

Belts: Look for cracks, fraying, or glazing. A broken serpentine belt on the highway kills your power steering, alternator, and water pump simultaneously. Hoses: Squeeze the radiator hoses. They should be firm but flexible. Soft, mushy hoses can burst under highway heat. Battery terminals: Should be tight and free of corrosion. Wiggle them — if they move, tighten them. A loose terminal can cause a random stall.

When to Bring It to a Shop First

The driveway check catches obvious problems, but some things need professional equipment:

- If you're overdue for an oil change — don't take old oil on a 500-mile trip - If your brakes feel soft, spongy, or you hear squealing — get them checked - If your check engine light is on — it might be nothing, or it might be something that gets worse at highway speed - If your AC hasn't been tested since last summer — test it now, not when you're stuck in traffic in 90-degree heat - If your car has been vibrating or pulling — alignment or balance issues get worse and more dangerous at highway speed - If your coolant hasn't been changed in 3+ years — a flush before a hot highway drive is cheap insurance

Common Highway Breakdowns (and How to Prevent Them)

Overheating

Why it happens: Sustained high RPM + hot ambient temperature + marginal coolant system = trouble. Stop-and-go city driving actually gives the engine periodic cool-down breaks that highway driving doesn't. Prevention: Check coolant level and condition. Make sure the cooling fan works. If your temperature gauge has been creeping higher than usual in traffic, address it before the trip.

Tire Blowout

Why it happens: Underinflated tires + highway speed + hot pavement = excessive heat buildup in the tire. Add a sidewall weakness from a pothole hit and you've got a recipe for a blowout. Prevention: Correct tire pressure, visual inspection for damage, adequate tread depth.

Dead Battery

Why it happens: A marginal battery that starts the car fine for short city trips can die during a rest stop after the engine has been off for an hour in hot weather. Prevention: If your battery is over 3 years old, get it tested. A load test tells you exactly how much capacity is left.

Transmission Overheating

Why it happens: Highway grades (especially in Wisconsin's hill country or Michigan's terrain), loaded vehicles, and hot weather stress the transmission. If the fluid is old or low, it can overheat. Prevention: Check transmission fluid level and condition. If it's dark or smells burnt, get it serviced before a long trip.

The Road Trip Emergency Kit

Keep this in the car:

- Phone charger (car charger and a portable battery pack) - Jumper cables or a portable jump starter - Basic tool kit (screwdrivers, pliers, adjustable wrench) - Flashlight with fresh batteries - First aid kit - Gallon of water (for you or the radiator) - Reflective triangles or flares - Tire pressure gauge - Paper maps or downloaded offline maps (cell service isn't guaranteed on rural Wisconsin highways) - Blanket (weather changes fast near the lake)

Chicago Holiday Weekend Traffic Tips

When to Leave

- Best time: Before 2 PM Thursday or after 9 PM Friday - Worst time: 3-7 PM Friday. The Kennedy, Edens, and I-90/94 become parking lots - Alternative: Saturday early morning — traffic is manageable before 9 AM

Route Tips

- Heading to Wisconsin: I-94 to I-43 is the obvious route but jams near the state line. Consider US-41 through the North Shore suburbs as an alternative for Lake Geneva destinations - Heading to Michigan: I-94 east through Indiana. The I-80/I-94 merge near Gary is always a mess — stay right and be patient - Heading downstate: I-55 south is your best bet. Less congested than I-57 for most Memorial Day destinations

Frequently Asked Questions

How far in advance should I get my car checked before a road trip?

A week before is ideal. That gives enough time to order parts if something needs fixing. The day before works for basic stuff (oil change, tire check) but not if a repair is discovered.

Is it worth getting roadside assistance for the weekend?

If you don't already have it, most auto insurance policies offer roadside assistance as an add-on for $10-$20/year. AAA memberships cover towing, lockouts, and flat tires. For a holiday weekend trip, it's cheap peace of mind.

My check engine light is on but the car runs fine. Can I still take a road trip?

It depends on what the code is. A stable, non-flashing check engine light for an evaporative emission code? Probably fine for a weekend trip. A misfire code or transmission code? Get it checked first. We can pull the code in 5 minutes and tell you if it's safe to drive.

Should I change my oil before or after a long road trip?

Before. Fresh oil protects the engine during sustained highway driving. If you come back and your next oil change is still 2,000+ miles away, you're fine waiting.

How much gas should I bring from Chicago?

Fill up before you leave. Gas prices in Wisconsin tourist towns and Indiana highway exits are typically $0.20-$0.40 higher per gallon than Chicago. The Costco at Clybourn and Sheffield usually has the best price on the North Side.

Hit the Road With Confidence

A 15-minute check and a quick shop visit can make the difference between a great weekend and a tow truck call. Don't skip the basics just because you're excited to get out of the city.

Need a quick pre-trip inspection? Schedule one at J and A Automotive — we can usually get you in same-day or next-day, especially if you call before the Friday rush.

📞 (773) 661-2155 | 4008 N Ravenswood Ave, Chicago, IL 60613

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- Summer Road Trip Preparation: Essential Tips for North Side Families - Tire Rotation & Alignment: The Spring Essentials Chicago Drivers Skip - AC System Check: Beat Chicago's Summer Heat Before It Hits

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J and A Automotive offers pre-trip vehicle inspections at our North Center Chicago shop. We'll check your car top to bottom and make sure it's ready for wherever the road takes you.