245/75R17 Tire Size Guide

The 245/75R17 size code gives four key measurements. The 245 is the tire's section width in millimeters, 75 means the sidewall height is 75 percent of that width, R identifies radial construction, and 17 is the wheel diameter in inches.

Modern metric sizing like 245/75R17 tells you more directly than older alphanumeric or numeric systems. It spells out width, profile, construction, and wheel size right in the code, but it still does not automatically answer every fitment question. Buyers should still compare overall diameter, actual wheel width, load needs, and vehicle clearance before assuming one 245/75R17 setup will behave the same as another.

The 245/75R17 fits a 17.0-inch wheel, which is 431.8 millimeters in diameter. That wheel diameter must match exactly, because a 17-inch tire cannot be installed on a wheel of any other diameter.

Wheel width matters alongside diameter. In this size, the wheel width range shown is 6.50 to 7.50 inches, which helps the tire keep its intended profile and footprint. A wheel outside that span can change sidewall shape and clearance behavior, so buyers comparing factory wheels, replacement wheels, or take-off wheels should confirm both diameter and width before mounting.

The 245/75R17 has a section width of 245 millimeters, which converts to 9.65 inches. Section width is the broadest point of the inflated tire from sidewall to sidewall, not the tread width that actually contacts the road.

Clearance checks should be based on section width because sidewalls are usually the first part of the tire to approach suspension parts, inner fenders, or steering components. Tread width is often narrower and can give a misleading impression of space. When buyers are deciding between nearby sizes, section width is one of the first numbers to compare against the wheelhouse and steering sweep.

The 245/75R17 has an overall diameter of 31.47 inches, or about 799.34 millimeters. That is the tire's full mounted and inflated height from the ground to the top of the tread, measured through the center.

Overall diameter affects more than appearance. It influences ride height, wheel-opening fill, effective gearing feel, and speedometer accuracy. A taller or shorter substitute can change how the vehicle sits and how much clearance remains during suspension travel or full steering lock. Buyers using 245/75R17 as a replacement reference should compare outside diameter closely before moving to any alternate size.

The 245/75R17 has a sidewall height of 7.23 inches, which equals 183.75 millimeters. This is the distance from the wheel bead seat to the outer edge of the tread on one side of the tire.

Sidewall height has a big effect on the tire's character. A taller sidewall generally adds more visual sidewall presence and can contribute to a more cushioned ride feel than a lower-profile size on the same wheel diameter. It also changes how fully the tire fills the wheel opening, so buyers concerned with stance or factory-like proportions should compare sidewall height along with overall diameter.

The 245/75R17 turns about 640.8 revolutions per mile. That number reflects how many full rotations the tire makes to cover one mile of travel.

Revolutions per mile are useful when comparing substitute sizes because they directly relate to speedometer and odometer behavior. A tire with a meaningfully higher revs-per-mile figure is effectively shorter and will turn more often over the same distance, while a lower figure points to a taller tire. Buyers considering a size change should compare this figure alongside overall diameter rather than relying on the printed size alone.

Not necessarily. The 245/75R17 gives you the basic size, but fitment still depends on load requirement, wheel width, tire construction details, and the space available around the suspension, brakes, and bodywork.

Vehicles that use the 245/75R17 can range from lighter-duty applications to much heavier truck and van service, so the size alone is only the starting point. Compare the wheel diameter, verify the 6.50 to 7.50 inch wheel-width range, and make sure the tire's service capability matches how the vehicle is actually used. Factory door-jamb information and the existing sidewall markings are both worth checking before replacing a set.

The 245/75R17 is shown here on wheels from 6.50 to 7.50 inches wide. Staying within that span helps the tire maintain its intended section width, sidewall shape, and tread profile.

A narrower wheel can pinch the sidewalls inward and make the tire stand taller and rounder, while an overly wide wheel can flatten the profile and change how the tire sits in the wheel opening. Either condition can affect clearance and wear behavior. Buyers using aftermarket wheels should confirm actual rim width, not just wheel diameter, before assuming a 17-inch wheel is automatically correct.

The 245/75R17 is primarily a modern radial size, so it makes the most sense where current road manners and service use matter more than strict historical appearance. Radial construction can improve drivability, but a vehicle being judged closely on originality may call for a different approach.

Restoration-minded buyers should separate size, construction, and appearance into three decisions instead of treating them as one. A tire can be the right physical size for a vehicle's needs yet still look more modern than the build theme calls for. If authenticity matters, compare the wheel diameter, overall stance, and sidewall presentation against the vehicle's original documentation before settling on 245/75R17.

The 245/75R17 combines a relatively tall 75-series sidewall with radial construction, so it is generally aimed at stable modern road use rather than low-profile response. Its 31.47-inch overall diameter also gives it a substantial footprint in the wheel opening and a taller-running character than shorter 17-inch sizes.

Driving feel still depends on the vehicle, alignment, suspension condition, wheel width, and load being carried. On trucks and vans especially, the same size can feel very different when mounted on a lightly used personal vehicle versus one that sees towing or jobsite duty. Buyers should judge the size as part of the whole setup, not as a standalone guarantee of ride or handling behavior.

Often, yes. With a 7.23-inch sidewall, the 245/75R17 has more sidewall depth than a lower-profile 17-inch size, which can contribute to a more forgiving ride and a less abrupt response to rough pavement.

Ride quality is influenced by more than sidewall height alone. Tire construction, inflation level, vehicle weight, suspension tuning, and wheel width all shape how the tire actually feels in service. Buyers choosing between a taller 75-series tire and a shorter alternative should think about everyday road surfaces, desired stance, and whether the vehicle is used more for utility, commuting, or occasional recreation.

The 245/75R17 stands 31.47 inches tall, and that number has a direct effect on stance, wheel-opening fill, and speedometer behavior. A tire with noticeably different outside diameter can change how the vehicle sits and how quickly the tire turns at road speed.

Revolutions per mile help tell the same story from another angle, and this size turns about 640.8 times per mile. If a replacement tire differs meaningfully from those figures, the change can show up in gearing feel, clearance at full lock, and the visual relationship between tire and body. Compare diameter before width alone when trying to preserve the same on-road character.

BFGoodrich is available in the 245/75R17. Even within a single size, brand choice matters because construction details, load capability, sidewall presentation, and intended use can vary from one tire to another.

Buyers should start by matching the tire to the vehicle's real job rather than choosing by name alone. On a size like 245/75R17, that means confirming radial construction, checking the load rating, and making sure the wheel-width range works with the existing rims. A well-matched tire is usually the one that fits the vehicle's service demands and maintains consistency across the full set.

A quality 245/75R17 should match the vehicle's required wheel diameter, fall within the correct wheel-width range, and carry the load the vehicle actually demands. Construction type and service rating matter more than cosmetic details if the vehicle is used regularly.

Sidewall style can still influence the decision, especially when the vehicle's appearance matters. In this size, raised white letter styling is one possible direction, but buyers should also think about how the tire's overall look fits the build. The best results usually come from choosing a full set with the same construction, load capability, and sidewall treatment rather than mixing different tire types.

In most cases, yes. Keeping all four 245/75R17 tires matched in size, construction type, load capability, and general tread category helps the vehicle behave more consistently in braking, steering, and wear.

Mixed tires can introduce differences in diameter, sidewall stiffness, and service capability even when the printed size looks similar. Those differences are especially important on trucks, vans, and utility vehicles that may carry varying loads. Buyers replacing only part of a set should compare the existing tires carefully and consider whether a full matched set would provide more predictable performance and a more uniform appearance.

A 245/75R17 in regular service should be inspected routinely for cracking, cuts, punctures, bulges, uneven wear, and air loss. Frequent checks matter even more on trucks and vans because heavier service can expose wear or damage sooner than light passenger use.

Monthly visual checks are a good habit, and a closer inspection before long trips or towing use is even better. Pay attention to shoulder wear, center wear, and any change in how the vehicle tracks or brakes, since those can point to alignment, inflation, or suspension issues. Catching problems early is far easier than discovering them after the tire has already been overstressed.

The 245/75R17 is normally a tubeless fitment. Tube use is still a wheel-and-tire-system question rather than a size question, so the actual wheel and the specific tire should always be confirmed before installation.

Modern radial sizes like this are commonly used on tubeless wheel systems, but wheel condition and wheel design still matter. If the wheel has damage, corrosion at the bead area, or an unusual application history, a qualified tire professional should inspect it before mounting. Buyers replacing older wheels or adapting take-off wheels should confirm compatibility rather than assuming the size alone settles the question.

A lightly used 245/75R17 can still age out before it wears out. Rubber deteriorates from time, heat, sunlight, ozone exposure, and storage conditions, so good tread depth by itself does not mean the tire remains ready for service.

Collector vehicles, spare-use trucks, and seasonal vehicles deserve periodic inspection even when miles stay low. Look for sidewall cracking, hardening, flat spotting, or changes in ride quality after long periods of sitting. Storage away from direct sun, electric motors, and extreme temperature swings helps slow aging, but buyers should still treat calendar age and physical condition as seriously as tread wear.

The 245/75R17 should be replaced when it shows cracking, bulges, exposed cord, repeated air loss, impact damage, or wear severe enough to compromise serviceability. Age also matters, especially if the tire has spent years in heat, sunlight, or long periods of inactivity.

A tire can look usable at a glance and still be past its best service life. Buyers should inspect all four tires closely, including the inner sidewalls where damage is easy to miss, and check the date and current sidewall markings before continued road use. If condition is questionable, a qualified tire professional should evaluate the tire before the next trip.

No. Matching the printed size alone is not enough, because the vehicle's actual load demand, wheel width, wheel condition, and service use all affect whether a given 245/75R17 is appropriate.

This size is shown here with a load rating of 3,195 pounds at 80 psi, and that figure should be compared to the vehicle's real requirements rather than assumed to cover every application. Buyers should also confirm that the wheel falls within the 6.50 to 7.50 inch width range and that the tire clears suspension and body components throughout steering and suspension travel.

Before a long trip, buyers should inspect the 245/75R17 for damage, verify that all tires match the vehicle's service needs, and confirm that the wheel and tire assembly is in sound condition. Air retention, tread condition, and visible sidewall health deserve attention before any extended highway use.

Load capability and current speed markings should also be reviewed on the actual tire in service. In this size, the example shown carries an S speed marking and a load rating of 3,195 pounds at 80 psi, but buyers should confirm the markings on their own tires rather than assuming every 245/75R17 is identical. A careful pre-trip inspection is one of the simplest ways to avoid preventable problems.