How Tall Are 245/75R16 Tires? | Real Dimensions

A 245/75R16 tire measures roughly 30.5 inches in overall diameter and about 9.6 inches wide.

If you’re shopping for new rubber or checking clearance on a truck or SUV, the number that matters most is overall height. The tire size code itself tells you exactly what to expect: the 245/75R16 format breaks down as 245 millimeters of section width, a sidewall that’s 75 percent of that width, radial construction, and a 16-inch wheel diameter. When you do the math, you get a tire that stands about 30.5 inches tall when mounted and properly inflated.

That makes this a popular size for light trucks, SUVs, and off-road builds where a taller tire improves ground clearance without needing a lift kit.

Breaking Down The 245/75R16 Tire Size Code

Each number in the size code describes a specific physical dimension of the tire. Understanding what each one means helps you compare options and verify that a given tire will fit your vehicle.

• 245 — the section width in millimeters, measured from the widest point of the sidewalls. That equates to about 9.65 inches.
• 75 — the aspect ratio. The sidewall height is 75 percent of the section width, which works out to roughly 7.2 inches.
• R — radial construction, meaning the internal cords run radially across the tire. This is the standard for modern passenger and light-truck tires.
• 16 — the wheel diameter in inches that the tire is designed to fit.

Add the sidewall height twice (top and bottom) to the wheel diameter, and you arrive at the overall height: 7.2 + 16 + 7.2 equals 30.4 inches, matching the figure that size charts round up to 30.5.

Dimensions At A Glance

Here’s the quick reference for every important measurement of this tire size, drawn from standard size-calculator data:

That wheel-width range is important to note. A 245/75R16 tire fits wheels from 6.5 to 8 inches wide, so if your current rims fall outside that window, you’ll need new wheels to run this tire safely.

Why Actual Height Varies Between Brands

The size code gives you the theoretical dimensions, but real tires rarely match those numbers to the fraction of an inch. Each manufacturer designs its tread and casing differently, so two tires with the identical “245/75R16” marking can measure slightly differently once mounted and inflated.

Those differences — a few tenths of an inch in height, a different max load rating, a different speed rating — matter when you’re measuring clearance or towing capacity.

Inflation pressure also plays a role. An underinflated tire squats lower and runs wider; an overinflated one stands taller and rides narrower. The listed 30.5-inch height assumes the tire is at its recommended pressure.

The most honest approach is to treat the size code as the starting point and confirm the exact specs on the specific tire’s product page. When clearance is tight — say, in a wheel well with less than an inch of margin — the brand-to-brand variation can make the difference between a clean fit and a rub.

Does Size Alone Guarantee Fit?

No. The 245/75R16 measurement tells you the tire’s physical dimensions, but it says nothing about whether that tire will work on your vehicle. Load rating, speed rating, offset, and suspension geometry all factor into whether a tire clears your fenders, brake calipers, and suspension arms without interference.

Always cross-check the tire’s load index against your vehicle’s requirements, confirm the speed rating meets or exceeds the OEM spec, and verify that the wheel width falls within the tire’s approved range. For lifted trucks or modified suspension setups, a quick test fit before purchase saves you from discovering a clearance problem after the tires are mounted. If you’re ready to compare real options, our tested roundup of the best 245/75R16 tire sets breaks down the top performers for highway driving, off-road use, and year-round duty.