245/35R20 Tire Size Guide

The 245/35R20 size code identifies a tire that is 245 millimeters wide, has a sidewall height equal to 35 percent of that width, uses radial construction, and mounts on a 20-inch wheel. In practical terms, that gives the 245/35R20 a calculated sidewall height of 3.38 inches and an overall diameter of 26.75 inches.

Unlike older alphanumeric or numeric tire sizes, the 245/35R20 format gives you the width, profile, construction type, and wheel diameter directly in the code. What it does not tell you by itself is the exact tread design, load capability, speed category, or whether a specific product suits your vehicle's intended use, so those details still need to be checked on the actual tire and wheel package.

The 245/35R20 fits a 20-inch wheel, which equals 508.0 millimeters at the bead seat. That 20-inch dimension is fixed and cannot be substituted with a 19-inch or 21-inch wheel, even if the tire's width or overall diameter seems close on paper.

Wheel width matters almost as much as wheel diameter with this size. The 245/35R20 is shown on rims from 8.00 to 9.50 inches wide, which is the range where the sidewall and tread profile stay in the intended shape. If a wheel falls outside that span, the tire can sit too pinched or too stretched, which changes appearance, steering feel, and clearance.

The 245/35R20 has a section width of 245 millimeters, which converts to 9.65 inches. Section width is the tire's widest sidewall-to-sidewall measurement when inflated, not the tread width that actually contacts the road surface.

Clearance checks should be based on section width because that is the dimension most likely to interfere with fender lips, struts, inner liners, or suspension links. Tread width is usually narrower, so relying on tread alone can give a false sense of space. On a low-profile size like this one, even small changes in wheel width or offset can affect how that 9.65-inch section sits in the wheel opening.

The 245/35R20 has a calculated overall diameter of 26.75 inches, or about 679.45 millimeters. That measurement combines the 20-inch wheel diameter with two 3.38-inch sidewalls, one above and one below the rim.

Overall diameter is one of the most important dimensions when replacing or comparing tire sizes because it affects ride height, wheel-opening fill, and speedometer behavior. A noticeable change from 26.75 inches can alter the car's stance and the way the tire visually balances with the wheel. Buyers using alternate sizes should compare overall diameter first, then check width, wheel width, and clearance before making a change.

The 245/35R20 has a calculated sidewall height of 3.38 inches, which is 85.75 millimeters. That is a short sidewall by passenger-car standards and is a defining part of why this size has a modern performance-oriented look and response.

A 35-series sidewall leaves less flexible sidewall cushion than a taller profile tire, so the tire tends to show more of the wheel and less of the sidewall in the wheel opening. Road feel, impact harshness, and steering response can all be affected by that shorter sidewall. Wheel condition, alignment, and local road surfaces become more important as the profile gets lower.

The 245/35R20 turns about 753.9 revolutions per mile. That figure comes from the tire's 84.04-inch circumference and shows how many full rotations it makes over one mile of travel.

Revolutions per mile are useful when comparing replacement sizes because a different number usually means a different rolling diameter. If a substitute turns substantially more or fewer revolutions per mile, the speedometer and odometer can read differently from the original setup. For that reason, buyers considering alternate sizes should compare revs per mile alongside overall diameter, not as an isolated number.

The 245/35R20 is commonly associated with modern performance and low-profile passenger car applications. The size appears across 2006 through 2026 fitments on coupes, sedans, grand touring cars, and high-performance specialty vehicles, which points to a use case centered on larger wheels, shorter sidewalls, and sharper steering response.

Vehicle lists are helpful, but they are still only a starting point for fitment research. Axle position, wheel width, wheel offset, suspension package, and brake package can all affect whether the 245/35R20 belongs on a specific car. If you are replacing an existing set, compare the current tire's sidewall markings and overall dimensions with your wheel and clearance measurements before assuming the same nominal size is automatically correct.

The 245/35R20 is shown on wheel widths from 8.00 to 9.50 inches. Staying within that span helps the tire maintain its intended section shape, contact patch behavior, and visual proportion on the wheel.

An 8.00-inch wheel gives the tire a slightly more rounded profile, while a 9.50-inch wheel pulls the sidewalls straighter and can make the tire appear more squared-off. Neither approach should be guessed at in isolation, because offset and suspension clearance matter too. Buyers should measure the actual wheel and compare the full wheel-and-tire package against fender, strut, and inner clearance before installation.

The 245/35R20 can be a sensible choice when the goal is modern radial road manners with an aggressive low-profile appearance. Radial construction generally supports the kind of everyday stability and steering precision expected from current performance-oriented passenger cars, while the 35-series sidewall keeps the wheel visually dominant.

Restoration-minded buyers should think carefully before using this size on a judged build, because a modern low-profile radial changes the visual character of a vehicle much more than a taller vintage-style tire. If appearance matters as much as drivability, compare wheel diameter, sidewall height, and wheel-opening fill against the vehicle's intended look before deciding that the 245/35R20 is the right direction.

The 245/35R20 typically delivers a firm, responsive feel because it combines a 245-millimeter section width with a short 35-series sidewall and radial construction. That combination generally favors steering immediacy and a more direct connection to the road than a taller-profile passenger-car tire of similar diameter.

Ride quality is still shaped by more than the size code alone. Suspension tuning, wheel width, alignment, tire age, and inflation condition all affect how this size behaves in real use. On rough pavement, a lower-profile tire usually transmits more road texture and impact harshness than a taller sidewall would, so buyers should match this size to both the vehicle's setup and the roads it actually sees.

Yes, the 245/35R20 can have a noticeable effect on steering feel and handling because the short 3.38-inch sidewall reduces sidewall flex compared with higher-profile tires. In many applications, that helps the vehicle feel quicker in turn-in and more settled during directional changes.

Handling changes should not be credited to sidewall height alone. Wheel width, tire construction details, alignment settings, and the condition of bushings and dampers all influence the final result. A car with worn suspension can still feel vague even on a low-profile size, while an over-wide wheel can change the way the tire responds. Buyers should look at the full chassis setup, not just the size stamping.

The 245/35R20 is a modern radial size used on current passenger cars, so it is generally aligned with the road manners expected from contemporary high-performance fitments. Its 26.75-inch overall diameter and radial construction are consistent with stable, higher-speed road use when the tire, wheel, and vehicle are matched correctly.

Road behavior still depends on the exact product, load matching, tire condition, and wheel setup. A low-profile tire can react more sharply to potholes, grooves, and expansion joints than a taller sidewall size, and worn or aged tires should not be judged by tread depth alone. Before long interstate trips, inspect for cracking, cuts, bulges, uneven wear, and proper inflation, and confirm that the tire's service description matches the car's needs.

The 245/35R20 is available from BFGoodrich and Nitto. Those two brands cover the products shown in this size, giving buyers a compact but meaningful range of modern radial options rather than a broad mix of vintage-style or specialty construction types.

Brand choice should be weighed alongside the exact service description, wheel-width compatibility, and the way the tire will be used. On a performance-oriented size like this one, consistency across the full set also matters. Mixing brands or models can change steering balance, ride character, and visual uniformity, so many buyers prefer to choose a matched set unless there is a specific reason not to.

A quality 245/35R20 starts with the right construction type, correct wheel-width range, and a service description that suits the vehicle's weight and intended road use. Because this is a low-profile modern radial size, buyers should also pay close attention to dimensional consistency, casing quality, and how accurately the tire maintains its intended shape on the wheel.

Sidewall appearance can still matter, even on a modern size. The products shown here use blackwall styling, which fits the contemporary look most vehicles in this size were designed around. Beyond appearance, compare the tire's marked specifications, the wheel width it supports, and whether you want a set focused on everyday road use or a more performance-oriented replacement strategy.

Using a matched set of 245/35R20 tires is usually the cleaner choice for balanced handling, consistent steering response, and even visual appearance. When all four tires share the same brand and model line, the carcass behavior, tread design philosophy, and general road feel are more likely to remain predictable across the vehicle.

Mixed sets can sometimes work, but they deserve more caution on a low-profile performance fitment. Different models may vary in casing stiffness, wear pattern, and overall response even when the nominal size matches. If replacement must happen in stages, compare service description, construction, and physical dimensions carefully, and keep the tire pairing consistent across the same axle whenever possible.

The 245/35R20 should be inspected regularly for uneven wear, cuts, bulges, cracking, and air loss, especially because a short-sidewall tire gives less visual margin when road damage occurs. Regular-use vehicles benefit from routine checks at pressure-adjustment intervals and before longer drives, since low-profile tires are often more exposed to pothole and curb impacts.

Wear patterns can also reveal wheel or suspension issues before they become more expensive problems. Inner-edge wear may point to alignment trouble, while repeated damage on one side of the tire can suggest a clearance or impact issue. Owners should look at the full tread face and both sidewalls, not just the outer shoulder, and address any unusual wear early.

The lifespan of the 245/35R20 depends on the specific tire, the vehicle's alignment, road surfaces, driving style, and how closely inflation is maintained. On regularly driven cars, this size is often asked to balance performance response with daily road use, so wear can accelerate if the car is heavy, powerful, or frequently driven on rough pavement.

Time matters along with tread depth. Even if a tire still has usable-looking tread, age, heat cycles, and exposure to sunlight and ozone can harden the rubber and reduce confidence in wet or cold conditions. Buyers should inspect date and condition together, rotate according to the vehicle's needs when appropriate, and replace aging tires before visible cracking or performance decline becomes severe.

The 245/35R20 is normally a tubeless fitment. With a modern radial passenger-car size like this, the tire and wheel are usually intended to seal as a tubeless assembly rather than rely on an inner tube.

Tube use is still a wheel-and-tire-system question, not something the size code settles by itself. Wheel condition, wheel design, and the exact tire being used should all be confirmed before assuming any assembly method. If there is uncertainty about the wheel's sealing surface or the intended setup, have the combination reviewed by a qualified tire professional before service.

The 245/35R20 should be replaced when it shows cracking, bulges, cuts, repeated air loss, impact damage, or wear severe enough to compromise road use. Tread depth is only part of the picture, especially on a low-profile performance size that may see hard cornering, rough pavement, and occasional curb or pothole contact.

Age also matters even if the tire still looks usable at a glance. Rubber can harden over time from heat, sunlight, ozone, and normal service cycles, which changes the way the tire behaves long before cords are exposed. Before highway travel, inspect both sidewalls and the tread carefully, and replace any tire whose condition raises doubt rather than waiting for a visible failure.

With the 245/35R20, the most important checks are whether the tire's service description matches the vehicle's load needs and whether the wheel falls within the 8.00 to 9.50 inch width range shown for this size. A mismatch in either area can affect tire shape, stability, and how the load is carried in actual driving.

Low-profile fitments leave less room for setup mistakes than taller tires do. Buyers should compare the actual wheel width, confirm the 20-inch rim diameter, and make sure the vehicle's axle loading and intended use align with the tire being chosen. If the car carries passengers, luggage, or sees sustained highway speeds, those real-world demands should guide the decision more than the nominal size alone.

The 245/35R20 is a modern passenger-car tire size, but buyers should still review the current sidewall markings on the exact tire and confirm local road-use requirements before installation. Size alone does not establish every legal or service detail, and wheel fitment, vehicle class, and the exact tire specification all remain part of the picture.

Long-trip preparation matters just as much as legality. Check for damage, verify inflation, inspect for uneven wear, and make sure the wheel and tire combination is properly matched before heading onto fast roads. Owners replacing one size with another should also remember that a substitute can affect clearance, stance, and speedometer behavior, so equivalent sizing should be treated as a comparison tool rather than an automatic answer.