BFGoodrich Tire Size Chart | Read Sizes Without Guesswork

A BFGoodrich sizing table lets you match width, sidewall height, rim diameter, and load markings before you order.

This BFGoodrich size chart makes more sense once you stop reading the sidewall as one long string of letters and numbers. Each part has one job: tell you the tire’s width, sidewall height, wheel fit, and work rating.

That matters because two tires can look close on screen and still fit your truck, SUV, or car in very different ways. A small jump in width, diameter, or load range can change clearance, ride feel, steering weight, gearing feel, and whether the tire still matches the sticker on your door jamb.

What The Sidewall Is Telling You

Take a common metric marking like LT265/70R17 123/120S. Read it left to right and the fog clears. The first block gives you the tire’s section width. The next number gives the sidewall height as a percentage of that width. The letter and number after that tell you construction type and wheel diameter.

Then come the work-rate markings. On many BFGoodrich truck tires, you’ll also see a load index pair, a speed symbol, and a load range letter. Those last markings matter just as much as width and height, since they tell you how much work the tire can take when the vehicle is loaded.

Metric Sizes

Metric sizes are the format most people know. You’ll see numbers such as 265/70R17, 245/65R17, or 285/70R17. In plain terms, that means section width in millimeters, sidewall ratio as a percent, radial build, and wheel size in inches.

This style is common on cars, SUVs, and many pickups. It is easy to compare and easy to match against the tire placard on your vehicle.

Flotation Sizes

BFGoodrich also sells many off-road and truck sizes in flotation format, such as 33×12.50R17 or 35×12.50R18. Here, the first number is the tire’s rough overall height in inches, the second is width in inches, and the last is wheel diameter.

That format is popular with lifted trucks and trail builds because it shows the tire’s overall stance at a glance. It still needs the same care with wheel width, clearance, load range, and speed rating.

How To Read Every Part Without Missing The Fine Print

Here’s a clean way to read a size code before you buy:

• Prefix: P means passenger tire. LT means light truck tire. No prefix often means a Euro-metric format.
• Width: 265 means the tire is about 265 mm wide at its widest point.
• Aspect Ratio: 70 means the sidewall height is 70% of the width.
• Construction: R means radial.
• Wheel Diameter: 17 means the tire fits a 17-inch wheel.
• Load Index: 123/120 shows how much weight the tire can carry in single and dual use, when that format applies.
• Speed Symbol: S, R, T, or another letter marks the tested top-speed class.
• Load Range: C, D, E, or F tells you the tire’s duty level and casing strength.

Read those parts together, not one at a time. A 265/70R17 passenger tire and an LT265/70R17 load-range E tire share width and wheel diameter, yet they can feel and work like two different tires on the same truck.

Sidewall Marking	What It Means	What To Check Next
P	Passenger-car tire build	Match it to vehicles that call for passenger-rated tires
LT	Light-truck tire build	Check load range, ride firmness, and vehicle needs
265	Section width in millimeters	Make sure the tire will clear suspension and fenders
70	Sidewall height as a percent of width	Watch for changes in ride height and speedometer reading
R	Radial construction	Most modern road tires use this build
17	Wheel diameter in inches	Must match your wheel size exactly
123/120	Load index rating	Make sure it meets or beats the vehicle’s need
S	Speed symbol	Do not step down from the vehicle maker’s minimum spec
E	Load range letter	Check ride, towing use, and air pressure needs

BFGoodrich Tire Size Chart For Real-World Fit Checks

A chart works best when you treat it as a filter, not a final yes. The official BFGoodrich tire size list shows that the brand’s current catalog runs from 13-inch through 22-inch wheel fitments. That is a wide spread, but it still does not mean every size fits every vehicle that shares the same rim diameter.

Start with the size printed on your current tire or door placard. Then compare five things: width, aspect ratio, wheel diameter, load marking, and tire family. If one of those drifts too far, the tire may mount fine and still be the wrong pick for the way the vehicle is used.

Wheel Diameter Is Only The Start

Many shoppers stop at the last number. That’s where trouble starts. Two tires can both fit a 17-inch wheel while having very different sidewall heights, total diameter, and load ability. A 245/65R17 and an LT285/70R17 are not a swap you make on a whim.

That’s why this chart works best when you read across the full line instead of hunting for one familiar number. Width changes clearance. Sidewall ratio changes overall height. Load markings change how the tire behaves under weight.

Match The Tire Family To The Job

BFGoodrich sells highway, all-terrain, mud-terrain, and street-performance tires. Even when two models share the same size code, they will not behave the same way. The tire family shapes road noise, wet-road feel, winter bite, tread-block movement, and how firm the casing feels over rough pavement.

That is why size is only half the story. Fit comes first. After that, match the tread style to the way the vehicle spends most of its miles.

Use The Door Placard Before You Order

Your door placard is the first filter, not the sales page. It gives you the size and pressure the vehicle maker set for that trim. The NHTSA tire safety page also points drivers to sidewall markings, tire age, and the vehicle placard when checking tire data.

If you want a different size, compare the new overall diameter and load rating against the stock setup. A small change may work well. A big jump can create rubbing, lazy shifts, odd speedometer readings, extra strain on brakes, or steering that feels heavier than it should.

When Upsizing Makes Sense

Upsizing can work when the new tire still clears at full lock and full suspension travel. It also needs a wheel with the right width and offset, plus enough room near the upper control arm, inner liner, and rear of the front wheel well.

Truck owners often step up for more ground clearance or a tougher tread. That can work nicely, but only when the whole package still fits the truck in motion, not just when it is parked.

Why Load Range Changes The Feel

Load range is one of the most skipped parts of a tire chart. A heavier-duty casing can be a smart move on a truck that tows, hauls, or sees rough tracks. On a lightly loaded daily driver, that same tire may feel firmer and less relaxed over broken pavement.

That does not make the tire wrong. It just means the fit question is not only about getting the bead on the wheel. It is about matching the tire to the work the vehicle does each week.

Common BFGoodrich Size Style	How To Read It	What It Usually Tells You
185/65R14	185 mm wide, 65% sidewall, 14-inch wheel	Compact-car metric sizing
205/70R14	205 mm wide, 70% sidewall, 14-inch wheel	Taller sidewall than a 60-series tire
215/60R14	215 mm wide, 60% sidewall, 14-inch wheel	Shorter sidewall on a small wheel
31×10.50R15	31-inch height, 10.50-inch width, 15-inch wheel	Truck-style flotation format
33×12.50R17	33-inch height, 12.50-inch width, 17-inch wheel	Wide off-road fitment with a taller stance
LT265/70R17	LT build, 265 mm wide, 70% sidewall, 17-inch wheel	Truck tire with heavier-duty intent

Common Size-Chart Mistakes That Cost People Money

A few slip-ups show up again and again when shoppers use a tire chart:

• Matching only the wheel diameter and ignoring overall tire height
• Switching from passenger to LT without checking ride and weight needs
• Jumping to a wider tire without checking wheel width range
• Skipping load index and load range
• Forgetting that tread type changes feel even in the same size
• Ignoring tire age on a used set

One more trap is online shorthand. A seller may write 33×12.5R17, 33×12.50R17, or 33/12.5R17 in a listing. Those can point to the same basic size idea, but you still need the full sidewall markings before money changes hands.

Getting The Right BFGoodrich Fit The First Time

The best way to use a size chart is simple. Start with the placard. Read the full sidewall code. Match width, aspect ratio, wheel diameter, load marking, and tire family. Then check clearance before you order, not after the boxes land at your door.

Once you read the code that way, the chart stops feeling like a wall of numbers. It becomes a clean filter that helps you narrow the right BFGoodrich options, skip bad swaps, and buy a set that fits the vehicle and the way you drive it.