2020 RAM Trucks Tire Fitment Guide

2020 RAM Trucks use 10 sizes across four model lines: 275/55R20, 275/65R18, 285/45R22, and 275/70R18 for the 1500; 265/70R17 and 275/60R20 for the 1500 Classic; 275/70R18, 285/60R20, 285/70R17, and 245/70R17 for the 2500; and 275/70R18, 285/60R20, and 235/80R17 for the 3500. Rim diameters span 17, 18, 20, and 22 inches across the year and make.

That means year and make alone are not enough to choose a tire for 2020 RAM Trucks. Start by confirming the exact model and wheel diameter already on the truck, then narrow to the correct size. Where a size is shared, such as 275/70R18 or 285/60R20, the same nominal fitment can apply to more than one RAM model, but wheel and service requirements still deserve a quick check before ordering.

On 2020 RAM Trucks, 275/70R18 is a metric radial size. The 275 is the nominal section width in millimeters, 70 is the aspect ratio, the R indicates radial construction, and 18 is the rim diameter in inches. This size appears on the 1500, 2500, and 3500, making it one of the few shared fitments in the 2020 RAM range.

That decoding helps separate one 18-inch RAM fitment from another. A 275/70R18 is not interchangeable with a 275/65R18 just because both mount on 18-inch wheels, since sidewall height changes with the middle number. If your 2020 RAM Trucks pickup uses this size, confirm the exact wheel and intended load use so the tire's load capacity, pressure rating, and rim-width compatibility align with the truck.

No, 2020 RAM Trucks models do not use one common tire size. The 1500 alone spans four sizes, the 1500 Classic uses two different sizes of its own, the 2500 uses four sizes, and the 3500 uses three. Only a few fitments overlap, with 275/70R18 shared by the 1500, 2500, and 3500 and 285/60R20 shared by the 2500 and 3500.

That variation matters because a tire choice for a 2020 RAM Trucks 1500 may have nothing in common with a 1500 Classic or a 3500. If the badge, trim, or wheel package is in doubt, check the existing sidewall and wheel diameter before choosing a replacement. That simple step prevents confusion between the half-ton, Classic carryover, and heavy-duty trucks in the same model year.

Current 2020 RAM Trucks product coverage includes two sidewall presentations in the sizes with available products: RWL and RBL. The 275/65R18, 275/70R18, 265/70R17, 285/70R17, and 245/70R17 examples use raised white letters, while the 235/80R17 example uses a raised black letter sidewall. All of them are radial truck tires.

The sidewall choice affects appearance as much as fitment. Raised white letters deliver a more aggressive, period-truck visual that many owners prefer on all-terrain builds, while a black-letter look is more understated. If visual authenticity matters on 2020 RAM Trucks, compare the sidewall on the truck now to the look you want to preserve, especially when replacing only one axle set at a time.

BFGoodrich covers the 2020 RAM Trucks sizes that currently have product availability here, including 275/65R18, 275/70R18, 265/70R17, 285/70R17, 245/70R17, and 235/80R17. The available products are all radial BFGoodrich All-Terrain T/A KO2 tires, with sidewall style depending on size. Some sizes have one service description, while others have multiple load or speed versions within the same nominal size.

Brand choice becomes straightforward when one maker covers the size you need, but the exact specification still matters. On 2020 RAM Trucks, the more important comparison is often between different load and speed versions within the same BFGoodrich size rather than between competing brands. Match the tire to how the truck is actually used, especially if it serves towing, hauling, or heavier-duty work.

The two 265/70R17 tires for 2020 RAM Trucks share the same BFGoodrich All-Terrain T/A KO2 series, radial construction, RWL sidewall, 17-inch rim diameter, 7.0-to-9.0-inch rim-width range, and S speed rating. Their differences are load and pressure capacity: one is rated at 2,470 pounds at 50 psi and weighs 45.7 pounds, while the other is rated at 3,195 pounds at 80 psi and weighs 53.5 pounds.

That makes the decision less about appearance and more about service requirement. A 2020 RAM Trucks 1500 Classic owner should compare the truck's existing tire specification and intended use before choosing between them. If the truck sees heavier cargo, towing, or load-range demands, the higher-capacity version may be the more appropriate match, but it should still be verified against the wheel and the truck's door-jamb guidance.

Rim-width guidance is available for several 2020 RAM Trucks sizes. The 275/65R18 fits 7.5-to-9.5-inch rims, 275/70R18 fits 7.0-to-9.0, 265/70R17 fits 7.0-to-9.0, 285/70R17 fits 7.5-to-9.5, 245/70R17 fits 6.5-to-8.0, and 235/80R17 fits 6.0-to-7.5. Each of those also matches the rim diameter built into the size code itself.

Those width ranges matter because two tires with the same rim diameter do not always want the same wheel width. Before mounting a replacement on 2020 RAM Trucks, compare the wheel already on the truck to the size's approved range rather than assuming any 17-inch or 18-inch truck wheel will do. That is especially important when changing from one stock size to another within the heavy-duty models.

The available 2020 RAM Trucks products are radial light-truck tires and do not carry tube-type markings such as TT in their size descriptions. That points to tubeless service for the sizes with product coverage here, including 275/65R18, 275/70R18, 265/70R17, 285/70R17, 245/70R17, and 235/80R17. None of those examples indicate a tube-required setup.

Even so, the wheel still deserves attention. A tubeless tire on 2020 RAM Trucks depends on a sound wheel bead seat and a healthy valve stem, so inspect both during mounting. If the truck has older aftermarket wheels, wheel damage, or prior repairs, confirm the wheel condition before reuse rather than treating tubeless compatibility as automatic.

A stored 2020 RAM Trucks pickup should be kept away from direct sunlight, electric motors, welders, furnaces, and other ozone-producing equipment that can age rubber faster. Clean, dry storage helps, and keeping the tires at the correct pressure reduces casing stress while the truck sits. Periodic movement is better than leaving the same contact patch loaded for months at a time.

If a 2020 RAM Trucks vehicle will be parked for a long season, roll it occasionally or use stands in a way that follows safe shop practice and avoids overloading one section of the tire. Heavy-duty trucks especially benefit from avoiding long static periods under full load. Storage habits do not stop aging, but they can slow flat-spotting, weathering, and uneven stress.

On a 2020 RAM Trucks pickup, tire life is usually better judged by age, condition, and service history than by mileage alone. A good rule is to begin careful age-based evaluation around five to seven years and to consider replacement around the 10-year mark regardless of tread depth. The DOT date code on the sidewall gives the production week and year.

That matters because many trucks accumulate uneven use. A 2020 RAM Trucks 2500 or 3500 may still have tread left while the rubber has already hardened or weathered from time, load cycles, and heat. Annual professional inspections become more valuable as the tire ages, especially if the truck tows, sits outside, or is used only occasionally between longer dormant periods.

Tires on a 2020 RAM Trucks vehicle should be inspected before every drive and again before any longer highway run or towing trip. Look for cuts, cracking, bulges, punctures, uneven tread wear, and pressure loss, and make sure the sidewall service description still matches how the truck is being used. Heavy-duty use puts extra value on catching issues early.

A quick inspection routine saves trouble on trucks that alternate between daily use and work duty. Check the spare as well, since a 2020 RAM Trucks spare that has aged or lost pressure is not much help when needed. If the truck has recently carried a heavy load, inspect for any fresh impact damage or unusual wear before the next trip.

Yes, the available 2020 RAM Trucks tires are highway-capable radial truck tires, but the exact speed rating matters. The examples here include S-rated tires to 112 mph, Q-rated tires to 99 mph, and R-rated tires to 106 mph depending on size and service description. Those ratings are comfortably above normal U.S. highway speeds when the tire is properly inflated and the truck is otherwise roadworthy.

For real-world use, the truck's load, suspension condition, alignment, brakes, and towing setup matter as much as the speed letter. A 2020 RAM Trucks 2500 or 3500 working under load should be driven within the tire's rated service conditions, not simply within the posted speed limit. Confirm the exact rating on the sidewall so the tire's intended duty matches the way the truck is used.

Inflation pressure on 2020 RAM Trucks depends on the exact tire size and service description. The available products range from 50 psi on some 265/70R17 and 285/70R17 versions to 80 psi on 275/65R18, 275/70R18, 245/70R17, 235/80R17, and the higher-capacity versions of 265/70R17 and 285/70R17. Those figures are tied to each tire's maximum load rating, not a one-pressure-fits-all setting.

Use the truck's door-jamb or owner's manual guidance for the correct operating pressure, then compare that with the tire's own sidewall information. A 2020 RAM Trucks owner should never move a pressure figure from one size to another just because the tires look similar. Inflation should reflect the specific size, load range, and whether the truck is running empty, carrying cargo, or towing.

Before a longer trip in a 2020 RAM Trucks pickup, inspect all four tires and the spare for cracking, cuts, tread damage, irregular wear, and proper inflation. Confirm that the sidewall size and service description match the truck, and look over the valve stems and wheels for leaks or impact damage. If the truck tows or hauls, recheck the tire pressures when cold and confirm the load is appropriate for the tire.

Tires are only one part of the pre-drive routine on a truck of this type. A 2020 RAM Trucks owner should also pay attention to brakes, steering feel, suspension behavior, and any signs of wheel-end or alignment trouble before heading out. Catching those issues early helps the tires wear correctly and keeps a longer highway trip or work run from turning into a roadside problem.