2021 Ram 1500 tire sizes
The 2021 Ram 1500 came from the factory with 5 tire sizes on 17" to 20" wheels. The most common size is 275/65 R18. Pick your trim below.
2021 1500 Big Horn
Factory (OE) sizes
18"wheels
Optional sizes
20"wheels
2021 1500 Classic Express
Factory (OE) sizes
17"wheels
Optional sizes
20"wheels
2021 1500 Classic Tradesman
Factory (OE) sizes
17"wheels
Optional sizes
20"wheels
2021 1500 Classic Warlock
Factory (OE) sizes
17"wheels
Optional sizes
20"wheels
2021 1500 E300 Sedan
Factory (OE) sizes
18"wheels
2021 1500 HFE
Factory (OE) sizes
20"wheels
2021 1500 Laramie
Factory (OE) sizes
18"wheels
2021 1500 Limited
Factory (OE) sizes
20"wheels
Optional sizes
22"wheels
2021 1500 Limited Longhorn
Factory (OE) sizes
20"wheels
Optional sizes
22"wheels
2021 1500 Rebel
Factory (OE) sizes
18"wheels
2021 1500 Tradesman
Factory (OE) sizes
18"wheels
Optional sizes
20"wheels
2021 1500 Tradesman HFE
Factory (OE) sizes
20"wheels
2021 1500 TRX
Factory (OE) sizes
18"wheels
2021 1500 TRX Launch Edition
Factory (OE) sizes
18"wheels
How to read 275/65 R18
- 275
- Tread width in millimetres
- 65
- Sidewall height, % of width
- R
- Radial construction
- 18
- Wheel diameter in inches
Overall diameter: about 32.1" · Sidewall: 179 mm