The most common question we get after a lift kit conversation is not about the lift. It is about the tires. "I'm going 4 inches — can I run 35s?" Usually yes. Sometimes no. And the reason it is not a clean yes is that lift height is only one of four things that decide whether a tire fits.

This guide lays out what generally fits at each lift height on a modern pickup, how to read a tire size so you can compare options, what wheel width and offset do to the equation, and what changes on the truck once you go bigger. We install lift kits and wheel and tire packages at all three of our St. Louis shops, and the numbers below are the ones we work from.

Why Lift Height Alone Doesn't Tell You the Tire Size

A lift raises the body or suspension, which adds room above the tire. It does nothing about the room beside or behind the tire. That is where most rubbing actually happens: the inside of the tire against the upper control arm or frame at full steering lock, the front of the tire against the plastic fender liner and bumper corner when you turn and hit a dip at the same time.

So four things decide fitment together:

• Lift height — vertical clearance under the fender.
• Wheel offset and backspacing — where the tire sits side to side. Less backspacing pushes the tire outward, away from the suspension, and buys inner clearance.
• Tire width — a 35x12.50 needs noticeably more room at lock than a 35x11.50.
• The truck itself — half-ton versus HD, crew cab versus regular, and the specific generation. A 2019+ Silverado and a 2019+ Ram 1500 with the same 3.5-inch lift do not clear the same tire.

Any chart that gives you one tire size per lift height is assuming a wheel offset. The chart below assumes a wheel with roughly zero to negative-12 offset (about 4.5 to 5 inches of backspacing on a 9-inch-wide wheel), which is what most people run on a lifted truck.

Tire Size by Lift Height: The Practical Chart

These are typical, achievable sizes on a late-model half-ton pickup (F-150, Silverado 1500, Sierra 1500, Ram 1500, Tundra) with an aftermarket wheel in the offset range above. HD trucks run about the same numbers with a little more room to begin with. Jeeps and Tacomas run smaller wheel wells and generally sit one size down from this chart.

How to Read a Tire Size (and Compare Them)

Truck tires come in two sizing formats, and comparing them trips people up.

Metric: 285/70R17. 285 is the section width in millimeters, 70 is the sidewall height as a percentage of that width, and 17 is the wheel diameter in inches. Overall diameter is not written on the tire — you have to work it out. A 285/70R17 comes to roughly 32.7 inches tall.

Flotation: 35x12.50R20. This one is easy: 35 inches tall, 12.5 inches wide, 20-inch wheel. It is the format most off-road tires use above 33 inches.

The reason this matters is that a "33" and a "35" are not exact numbers. Two tires labeled 35x12.50 from different brands can differ by nearly half an inch in real measured height, and a metric size marketed as a 35 might measure 34.4. When you are working close to the fitment limit, that half inch is the difference between clean and rubbing.

Every manufacturer publishes the measured diameter for each size. Look at that number, not the marketing size, when you are working near the limit.

Wheel Width, Offset and Backspacing: The Other Half

We wrote a full explainer on offset, bolt pattern and fitment, but here is the short version as it applies to lifted trucks.

Offset is the distance from the wheel's centerline to its mounting face. Positive offset tucks the wheel in toward the truck; negative offset pushes it out. Factory truck wheels typically run +20 to +45. Aftermarket lifted-truck wheels run 0 to -44.

Backspacing is the same idea measured differently: the distance from the mounting face to the inside lip of the wheel. Less backspacing means the wheel sits further out.

Moving from a factory +30 offset wheel to a -12 aftermarket wheel pushes each tire out about 1.65 inches. That is what creates room between the tire and the upper control arm at full lock, and it is why a 3-inch lift with the right wheel fits 35s while the same lift on factory wheels does not.

The tradeoff is real. Push the tire out far enough and it sticks past the fender, throws road spray down the side of the truck, and puts more leverage on wheel bearings and ball joints. Missouri also has fender coverage rules that come into play once the tread is outside the body line — more on that in our post on Missouri lift laws. For a daily driver we usually land between 0 and -18 offset; anything past -24 is a look you choose on purpose.

What Bigger Tires Change on the Truck

Going from a 32-inch stock tire to a 35 is roughly a 9% increase in diameter. That number shows up everywhere.

Speedometer and odometer

Your speedometer reads low by about the same percentage. At an indicated 70 mph on I-64 you are actually doing about 76. The odometer under-counts miles, which affects service intervals and resale mileage. Most modern trucks can be recalibrated with a handheld programmer; we do this as part of the install.

Effective gearing

A bigger tire is the same as taller final-drive gearing. The engine turns fewer RPM at a given speed, which sounds good until you notice the truck hunts between gears on the highway, feels lazy from a stop, and downshifts more with a trailer. On 35s most half-tons are fine on stock gears if you were not towing heavy. On 37s, re-gearing (typically to 4.56 or 4.88 from a factory 3.73) is the difference between a truck that drives right and one that fights you.

Fuel economy

Expect a real drop. Between the weight, the rolling resistance of an aggressive tread, and the gearing change, 1 to 3 mpg is typical on 35s. Mud-terrains are worse than all-terrains.

Braking

Heavier, taller tires give the brakes more rotating mass to stop. Distances grow — not dramatically on 35s with good pads, but measurably.

Ride quality

Usually better on pavement than people expect. A taller sidewall soaks up more of what St. Louis potholes throw at you. Where it gets worse is with heavy load-range E tires at highway pressures on a half-ton — run the pressure the truck needs, not what is printed on the sidewall.

Rubbing, Trimming and the Full-Lock Test

Almost every truck at 35 inches and up needs something trimmed. It is normal, and it does not mean the fitment is wrong. The usual suspects:

• Front fender liner. The plastic liner at the leading edge of the wheel well. Trimming a few inches of it is routine and invisible once done.
• Crash bar / bumper bracket. On many GM and Ford trucks the metal support behind the front bumper corner sits right where a wide tire swings at lock. It gets trimmed or a spacer moves the bumper forward.
• Pinch weld. The seam of sheet metal at the bottom of the fender opening. Gets folded or ground flat.
• Mud flaps and running board brackets. Occasionally in the way on wider setups.

What you do not want is a shop that mounts the tires, sees they clear straight ahead, and calls it done. The test is turning the wheel to full lock in both directions, loading the suspension, and checking with someone watching the tire. Then a drive with tight turns and a dip in the road. That is the only way to know.

All-Terrain vs. Mud-Terrain for St. Louis

Most lifted trucks in St. Louis County spend 95% of their life on pavement. The tire choice should reflect that. Here is how the categories shake out for our roads and our winters.

Our default recommendation for a daily-driven lifted truck is an all-terrain with the three-peak mountain snowflake (3PMSF) rating. It handles a Missouri ice storm far better than a mud-terrain, wears reasonably, and does not drone at 70 on I-270. If you want the mud-terrain look, rugged-terrains split the difference. We covered winter tire options more broadly in our post on winter tires in St. Louis.

What Happens After the Tires Go On

A tire and wheel package on a lifted truck is not finished when the lug nuts are torqued. The things that should happen before you leave the shop:

• Alignment. Any lift changes caster and camber. Bigger tires and a different offset change the scrub radius. An alignment to the lifted spec, not the factory spec, is what keeps the truck tracking straight and the tires wearing evenly.
• Speedometer recalibration. Covered above. Also corrects the ABS and traction control, which use wheel speed.
• TPMS. Sensors transfer to the new wheels or get replaced, then relearn to the truck.
• Torque recheck. Aftermarket wheels should be re-torqued after the first 50 to 100 miles. We tell every customer to come back for it.
• Hub-centric rings. If the wheel's center bore is larger than the hub, rings fill the gap and prevent vibration. Cheap, easy, often skipped.

If you are still deciding on the lift itself, start with our guides on what size lift kit your truck needs and leveling kits vs. lift kits. Then bring the truck to Chesterfield, West County in Ellisville, or South County and we will spec the lift, wheel and tire as one package so it fits the first time. Recent builds are in the gallery.

Frequently Asked Questions