How to Select Tires for SUV? | Match Specs, Then Terrain

Selecting tires for an SUV starts with matching the factory size, load index, and speed rating, then choosing a tread type for your climate.

Picking the wrong rubber for a heavy SUV isn’t just a comfort issue—it’s a safety and handling one. The right set depends on one thing: what the vehicle demands, not what looks aggressive or costs the least. Before you shop, grab the owner’s manual or check the driver-side door jamb sticker. That placard lists the exact tire size, load index, and speed rating the manufacturer engineered the suspension and brakes around. Step away from those numbers and you risk poor wear, compromised towing, or a tire that can’t handle the vehicle’s weight.

The Specs That Matter Before Any Tread Decision

Three figures on the sidewall control everything else. The size (like P245/65R17) must match exactly—a tire that “looks close” is not acceptable. The load index tells you how much weight each tire can carry; never drop below the OEM rating if you haul cargo or tow. The speed rating (the letter after the size, like H or V) is part of the required specification, not a suggestion for how fast you plan to drive.

Consumer Reports confirms the process: match the vehicle’s needs, weigh where and how you drive, and verify size and performance characteristics fit the vehicle. Firestone’s guidance starts the same way—owner’s manual or door jamb sticker first, then stay near that size range for replacements. SUVs are heavier than most cars, so correct load and speed indexes matter more here than on a compact sedan.

Read the Sidewall and Check the Door Jamb

On most SUVs, the spec you need is printed in two places. The driver-side door jamb has the placard with the OEM-approved size and inflation pressures. The current tire’s sidewall shows the same size code followed by the load index number and speed rating letter—for example, 245/65R17 107H means load index 107 and speed rating H.

If you’re replacing only two tires instead of four, put the newer pair on the rear axle. That keeps the end with more grip at the back and reduces the chance of the tail stepping out in wet conditions. Mixing different tire models across axles is something to avoid when you can help it.

Match Tread Type to Your Climate and Driving

Tread category is where the drivetrain and your zip code come in. All-season tires suit most U.S. highway and city drivers in moderate climates—they prioritize comfort, lower noise, and longer tread life. All-weather tires earn their keep where real winter hits, since some carry the Three-Peak Mountain Snowflake (3PMSF) symbol for snow traction. Winter tires belong on the SUV in sustained snow, ice, and cold—fit them as a complete set of four for balanced control.

Off-road use flips the priorities. All-terrain and mud-terrain tires bring stronger sidewalls and grip on loose surfaces, but they cost you efficiency and add noise on pavement. Continental’s take on SUV tires adds one more variable: whether the vehicle is electric, hybrid, or combustion. Powertrain and vehicle mass change what the tire needs to do.

Whatever you pick, check the numbers first. Tread on SUV tires must be at least 1.6 mm deep by law. Consumer Reports’ penny test works here too: if the top of Lincoln’s head is visible, the tire is too worn to keep. Replacement is due at 2/32 of an inch, and sooner if you spot uneven wear, cracks, bulges, or reduced grip.

What Happens When the Specs Don’t Match

Downgrading load capacity is the most common costly mistake. A lower load rating than OEM can overheat and fail under a heavy SUV with cargo and a trailer behind it. Ignoring the speed rating is the same error in another form—it’s part of the required specification, not a performance upgrade.

Buying by brand or price alone skips the size, load, and speed checks that keep the vehicle stable. Fitting aggressive off-road tires for mostly highway miles brings noise and worse fuel economy for no benefit. Choosing tires unsuited to local winter conditions leaves you under-gripped exactly when traction matters most. The same logic applies broadly to crossovers and pickups, so the process holds up beyond the SUV segment.

If you’re on a tighter budget and want to see the tested options analysts recommend for the dollar, our roundup of best budget SUV tires covers value picks that still hold the right specs.