That first slick morning around Green Bay has a way of showing you what your tires can, and can’t, do. Maybe it’s a frosty commute through Ashwaubenon, a slow crawl near Lambeau Field, or a turn where slush from the Fox River corridor has turned the road shiny. Before the first flurry, take a few minutes to check your tread and tire pressure.

This is Week 2 of Ron Franklin’s 8-week winter prep series. Start with our series kickoff: Your 8-Week Green Bay Winter Prep Plan, then catch up on Week 1’s battery check. This week, we’re talking traction, starting with a quarter and a closer look at all four tires.

Try the quarter test

Park on level ground and turn the steering wheel so you can see the front tires. Take a quarter and place it head-down in one of the main tread grooves, with Washington’s head facing into the tire.

• If the top of Washington’s head is covered, you have roughly more than 4/32 inch of tread at that spot.
• If you can see the top of his head, the tread is around 4/32 inch or less. That’s a good reason to get a more precise measurement and plan for replacement before winter grip becomes a problem.

Check more than one place on each tire. Look at the inside, center, and outside tread, and repeat on all four tires. A tire can wear unevenly, so one deep-looking groove doesn’t tell the whole story. A tread-depth gauge gives you a clearer measurement; the quarter is a handy first look, not a full inspection.

Why use 4/32 inch as a winter heads-up? It’s not Wisconsin’s legal minimum. State regulations set a minimum of 2/32 inch in the major grooves, but legal minimum and comfortable winter traction aren’t the same thing. Less tread means less room for water, slush, and snow to move out from under the tire. AAA describes the quarter test as a rough 4/32-inch check, while the WisDOT tire regulations spell out the legal tread requirements.

So if you can see Washington’s head, don’t panic, but don’t put the check off until the roads are white, either. A mechanic can measure the tread and help you decide whether the tires have enough life left for the season.

Cold weather drops tire pressure, too

A tire can look fine and still be underinflated. As the temperature falls, air pressure inside the tire falls along with it. A commonly used rule of thumb is about 1 psi for every 10°F change, though actual readings depend on conditions.

Check pressure when the tires are cold: before driving, or after the vehicle has been sitting for several hours. Use the pressure listed on the sticker inside the driver’s door jamb, not the maximum pressure printed on the tire sidewall. The sidewall figure is not your vehicle’s recommended setting.

If your dashboard light comes on after a cold snap, it may simply be telling you the pressure needs attention. Measure all four tires, including the spare if your vehicle has one, and bring them to the door-jamb recommendation. Don’t let a warm reading fool you: pressure rises as tires heat up while driving, so checking before the morning commute gives you a more useful number.

The NHTSA tire safety guidance covers pressure and basic tire maintenance. It’s worth a look if you’d like the official version to keep handy.

Are all-season tires enough for a Green Bay winter?

Sometimes, but the answer depends on your tires and your usual routes.

A healthy set of all-season tires may work for drivers who mostly travel cleared roads and can adjust their plans when conditions get rough. But “all-season” doesn’t mean every tire handles packed snow and ice equally well. Rubber compound and tread design matter, and ordinary all-season tires generally aren’t designed to offer the same cold-weather grip as dedicated winter tires.

Look for the Three-Peak Mountain Snowflake symbol (often called 3PMSF) on the sidewall. It identifies a tire that meets a snow-traction performance standard. Some all-weather tires carry the symbol and are intended for year-round use in more challenging conditions; dedicated winter tires are another option for drivers who regularly deal with deep snow, packed roads, or icy commutes. Michelin’s winter tire guide explains the differences.

Think about your own drive. Are you heading out early on untreated roads, making frequent trips between Howard and downtown, or driving beyond the plowed routes around Wrightstown and Greenleaf? If snow and ice are part of your normal routine, ask a tire professional whether winter tires make sense for your vehicle and driving habits.

When should you rotate or switch to winter tires?

A rotation helps tires wear more evenly, but the right interval depends on the vehicle and tire setup. Check your owner’s manual for the recommended schedule. If you see one tire wearing faster than its mate, or the inner or outer edge is wearing down, ask about the cause as well as the rotation. Alignment or inflation issues can contribute to uneven wear.

A seasonal change makes sense if you already have a winter set and want the right tires on before snow starts sticking. Swapping ahead of the first big storm also gives you time to sort out a slow leak, worn tread, or missing lug-nut key without an “ope, I needed those yesterday” scramble.

If your winter tires are already mounted on a second set of wheels, ask about a seasonal swap. If the tires need to be mounted onto your current wheels, confirm what service and equipment your vehicle requires when you book. And if you drive an all-wheel-drive vehicle, ask before replacing just one or two tires; the owner’s manual may have specific requirements for matching tread depth.

People searching for mobile tire rotation at my home or a mobile tire change Green Bay can save themselves a trip across town: HMS offers tire rotations and seasonal tire service, with the team coming to your home or workplace. A little salt and road brine are part of Rust Belt life, too. While you’re looking at the tires, glance around the wheels for built-up slush and corrosion. Winter grit can make future wheel and brake work more stubborn, so don’t let salt sit longer than it needs to.

Get a winter tire check without adding a shop trip

HMS Mobile Auto offers winter preparation services as part of our comprehensive vehicle check. It’s a convenient, single-visit way to look over key items before winter settles in. Tires and pressure are part of the picture, along with other checks suited to your vehicle.

The HMS service truck can pull up at your home or workplace, so you don’t need to arrange a ride or spend your afternoon in a waiting room. Our local team serves Green Bay and nearby communities, including De Pere, Allouez, Ledgeview, Oneida, Appleton, and Greenleaf. And for local businesses, we can help with fleet maintenance at the workplace, keeping vehicles on the road while your crew gets on with the day.

If you’re checking for a winter tire check Green Bay WI or searching mobile mechanic near me, start with the quarter test and a cold pressure check. If you spot shallow tread or uneven wear, get a closer look before the weather turns. For mobile tire service or a comprehensive vehicle check, explore HMS services, book your comprehensive vehicle check, or call 920-309-6110.

Better to find out in your driveway than halfway through a slippery commute. Yah hey: winter’s coming.

Social Snippet (for Sonny — post on publish day, Oct 26)

🚗❄️ Grab a quarter before the first snow, Green Bay.

Stick Washington’s head into your tire tread. If you can see the top of it, your tires won’t grip like you need them to when the slush hits. Ope.

10 seconds in your driveway today beats white-knuckling it on I-41 tomorrow. Not sure what you’re looking at? Our mobile team will check tread, pressure, and the whole vehicle at your home or workplace — no shop trip, no waiting room.

Read the full quarter-test guide: https://hmsmobileauto.com/snows-coming-the-quarter-test-every-green-bay-driver-should-run-before-the-first-flurry/
📞 Book: 920-309-6110

Suggested image: driveway SUV service shot (https://cdn.marblism.com/qWw1If6jcXK.jpg)

Google Business Profile Blurb (for Sonny — post same day, Oct 26)

Before the first snow flies in Green Bay, grab a quarter and check your tire tread. If you can see the top of Washington's head, your tires are due for a closer look — and our mobile team will check tread, pressure, and the rest of your vehicle right at your home or workplace. Read the quick quarter test guide: https://hmsmobileauto.com/snows-coming-the-quarter-test-every-green-bay-driver-should-run-before-the-first-flurry/ — or call 920-309-6110 to book winter tire service and a comprehensive vehicle check near you.

Keywords: mobile tire change Green Bay, mobile mechanic near me