2021 Ram 1500 Wiper Sizes, Bulb Sizes & Tire Sizes
The short answer
The 2021 Ram 1500 takes 24" driver and 24" passenger wiper blades, uses an H11 low-beam bulb, and came on 275/65R18 (Models with 18-in. wheels), 275/55R20 (Models with 20-in. wheels) depending on trim.
Wiper blade sizes
Driver side
24" Shop on Amazon
Passenger side
24" Shop on Amazon
Tire sizes by trim
Models with 18-in. wheels
275/65R18 See tires at Amazon
Models with 20-in. wheels
275/55R20 See tires at Amazon
The size on the placard inside the driver's door jamb is the one your car left the factory with. Match that, not this table, if they differ; a previous owner may have changed wheels.
Bulb sizes
Low beam
H11 Shop on Amazon
High beam
9005 Shop on Amazon
Fog light
H11 Shop on Amazon
Front turn signal
7444NA Shop on Amazon
Brake light
7440 Shop on Amazon
Tail light
7440 Shop on Amazon
Reverse light
7440 Shop on Amazon
License plate
Sealed LED, no replaceable bulb
Wheel specs and lug torque
Bolt pattern
6x139.7 mm (6x5.5")
Center bore
77.8 mm
Lug thread
M14x1.5 Shop on Amazon
Lug seat
cone
Lug nut torque
130 ft-lbs (176 Nm)
Key fob, battery and sensors
Key fob battery
CR2450 Shop on Amazon
Replacement fob
FCC ID OHT-4882056 · smart key Shop on Amazon
Frequency
433 MHz
Dimensions, weight and fuel
Fuel
Gasoline
Octane
87 minimum, 89 recommended
Fuel tank
26 gal (98 L)
Worth knowing about the 2021 1500
- LED lighting. The license plate is a sealed LED unit with no user-replaceable bulb. A failure means replacing the assembly.
- Bulbs. These codes are for halogen reflector headlamps and base tail lamps; LED headlamp, fog and tail packages are sealed units.
- Tire chains. The manual permits chains or cables of SAE Class S (low clearance), on the drive wheels only, fitted to the standard tire size. Chains for this size on Amazon →
- Tires. The manual allows Class S chains on the rear 275/65R18 and 275/55R20 tires only, and says the Rebel cannot take chains.
- Torque. Tighten lug nuts to 130 ft-lbs in a star pattern with a torque wrench, and re-check after the first 50 miles. This figure is from the owner's manual; an impact gun will overshoot it.
- Key fob. Match the FCC ID (OHT-4882056) printed on the back of your fob when buying a replacement; the same car can use two fob designs in one year. A new fob still needs programming to the car.
- Key fob. Base trucks with a keyed ignition may carry a different remote, so match the fob in hand.
- Octane. The manual requires 87 octane and recommends 89 for full performance. Regular will not harm the engine; premium is a choice, not a requirement.
- Fuel. Quad Cabs hold 23 gallons and long beds or the optional tank 33.