2021 RAM 3500 dimensions: length, width, height, weight, cargo

Length

259.4in long

21 ft 7.4 in. 6.59 m.
79.5 in wide, 78.3 in tall.
Tradesman LB RWD. Lengths: 237.4 in to 259.4 in.
Full-size truck.

To scale. Dashed: median of 12 trucks (2021).

Dimensions by trim

2021 RAM 3500: outside dimensions by trim
Trim	Length	Width	With mirrors	Height	Wheelbase	Ground clearance	Turning circle
Tradesman 4x2 Reg Cab 8' Box, Big Horn 4x2 Reg Cab 8' Box, Lone Star 4x2 Reg Cab 8' Box	230.7 in to 259.4 in	79.4 in	79.4 in	77.8 in	140.0 in to 168.9 in	7.4 in	45.4 ft
Tradesman LB RWD, Tradesman Regular Cab LB DRW RWD, Lone Star Regular Cab LB RWD, Big Horn LB RWD, Tradesman LB DRW 4WD, Tradesman Crew Cab LB DRW RWD, Big Horn LB DRW RWD, Lone Star LB DRW RWD, Big Horn LB 4WD, Lone Star LB 4WD, Tradesman LB 4WD, Big Horn LB DRW 4WD, Lone Star LB DRW 4WD, Tradesman Crew Cab LB DRW 4WD, Big Horn Crew Cab LB DRW RWD, Lone Star Crew Cab LB DRW RWD, Big Horn Crew Cab LB DRW 4WD, Lone Star Crew Cab LB DRW 4WD, Big Horn Mega Cab DRW 4WD, Lone Star Mega Cab DRW 4WD, Laramie Crew Cab LB DRW RWD, Laramie Crew Cab LB DRW 4WD, Laramie Mega Cab DRW 4WD, Limited Longhorn Crew Cab RWD, Limited Longhorn Crew Cab LB RWD, Limited Longhorn Crew Cab LB DRW RWD, Limited Longhorn Crew Cab 4WD, Limited Longhorn Crew Cab LB 4WD, Limited Longhorn Mega Cab 4WD, Limited Longhorn Crew Cab LB DRW 4WD, Limited Crew Cab LB DRW RWD, Limited Longhorn Mega Cab DRW 4WD, Limited Crew Cab LB DRW 4WD, Limited Mega Cab DRW 4WD	259.4 in	79.5 in	79.4 in	78.3 in	168.9 in	N/A	50.6 ft
Tradesman 4x4 Reg Cab 8' Box, Big Horn 4x4 Reg Cab 8' Box, Lone Star 4x4 Reg Cab 8' Box	230.7 in to 259.4 in	79.4 in	79.4 in	79.5 in	140.0 in to 168.9 in	8.5 in	41.5 ft
Tradesman Crew Cab RWD, Big Horn Crew Cab RWD, Lone Star Crew Cab RWD, Laramie Crew Cab RWD, Longhorn 4x2 Crew Cab 6'4" Box, Limited Crew Cab RWD	237.4 in	79.4 in	79.4 in	78.4 in	149.5 in	N/A	47.7 ft
Tradesman Crew Cab LB RWD, Big Horn Crew Cab LB RWD, Lone Star Crew Cab LB RWD, Laramie Crew Cab LB RWD, Longhorn 4x2 Crew Cab 8' Box, Limited Crew Cab LB RWD	230.7 in to 260.8 in	79.4 in	79.4 in	78.4 in	140.6 in to 169.5 in	7.3 in	53.6 ft
Tradesman Crew Cab 4WD, Big Horn Crew Cab 4WD, Lone Star Crew Cab 4WD, Laramie Crew Cab 4WD, Longhorn 4x4 Crew Cab 6'4" Box, Limited Crew Cab 4WD	237.4 in	79.4 in	79.4 in	79.8 in	149.5 in	N/A	47.7 ft
Tradesman Crew Cab LB 4WD, Big Horn Crew Cab LB 4WD, Lone Star Crew Cab LB 4WD, Laramie Crew Cab LB 4WD, Longhorn 4x4 Crew Cab 8' Box, Limited Crew Cab LB 4WD	230.7 in to 260.8 in	79.4 in	79.4 in	78.4 in to 79.5 in	140.6 in to 169.5 in	7.3 in	53.7 ft
Big Horn Mega Cab 4WD, Lone Star Mega Cab 4WD, Laramie Mega Cab 4WD, Longhorn 4x4 Mega Cab 6'4" Box, Limited Mega Cab 4WD	230.7 in to 259.4 in	79.4 in	79.4 in	78.5 in to 79.5 in	160.5 in	7.3 in	50.6 ft

2021 RAM 3500: weight by trim
Trim	Curb weight	GVWR	Payload
Tradesman 4x2 Reg Cab 8' Box	6,056 lb	10,700 lb	4,644 lb
Tradesman LB RWD, Tradesman Regular Cab LB DRW RWD, Lone Star Regular Cab LB RWD, Big Horn LB RWD, Tradesman LB DRW 4WD, Tradesman Crew Cab LB DRW RWD, Big Horn LB DRW RWD, Lone Star LB DRW RWD, Big Horn LB 4WD, Lone Star LB 4WD, Tradesman LB 4WD, Big Horn LB DRW 4WD, Lone Star LB DRW 4WD, Tradesman Crew Cab LB DRW 4WD, Big Horn Crew Cab LB DRW RWD, Lone Star Crew Cab LB DRW RWD, Big Horn Crew Cab LB DRW 4WD, Lone Star Crew Cab LB DRW 4WD, Big Horn Mega Cab DRW 4WD, Lone Star Mega Cab DRW 4WD, Laramie Crew Cab LB DRW RWD, Laramie Crew Cab LB DRW 4WD, Laramie Mega Cab DRW 4WD, Limited Longhorn Crew Cab RWD, Limited Longhorn Crew Cab LB RWD, Limited Longhorn Crew Cab LB DRW RWD, Limited Longhorn Crew Cab 4WD, Limited Longhorn Crew Cab LB 4WD, Limited Longhorn Mega Cab 4WD, Limited Longhorn Crew Cab LB DRW 4WD, Limited Crew Cab LB DRW RWD, Limited Longhorn Mega Cab DRW 4WD, Limited Crew Cab LB DRW 4WD, Limited Mega Cab DRW 4WD	N/A	N/A	N/A
Tradesman 4x4 Reg Cab 8' Box	6,407 lb	11,000 lb	4,592 lb
Tradesman Crew Cab RWD	6,069 lb to 6,801 lb	10,700 lb	4,276 lb
Tradesman Crew Cab LB RWD	6,593 lb	11,100 lb	4,507 lb
Big Horn 4x2 Reg Cab 8' Box, Lone Star 4x2 Reg Cab 8' Box	6,060 lb	10,700 lb	4,641 lb
Tradesman Crew Cab 4WD	6,746 lb	11,000 lb	4,255 lb
Big Horn 4x4 Reg Cab 8' Box, Lone Star 4x4 Reg Cab 8' Box	6,402 lb	11,000 lb	4,598 lb
Tradesman Crew Cab LB 4WD	6,953 lb	11,400 lb	4,445 lb
Big Horn Crew Cab RWD, Lone Star Crew Cab RWD	6,069 lb to 6,801 lb	10,700 lb	4,214 lb
Big Horn Crew Cab LB RWD, Lone Star Crew Cab LB RWD	6,565 lb	11,100 lb	4,536 lb
Big Horn Crew Cab 4WD, Lone Star Crew Cab 4WD	6,773 lb	11,000 lb	4,227 lb
Big Horn Crew Cab LB 4WD, Lone Star Crew Cab LB 4WD	6,937 lb	11,400 lb	4,462 lb
Big Horn Mega Cab 4WD, Lone Star Mega Cab 4WD	7,063 lb	11,400 lb	4,337 lb
Laramie Crew Cab RWD	6,545 lb	10,700 lb	4,155 lb
Laramie Crew Cab LB RWD	6,616 lb	11,100 lb	4,485 lb
Laramie Crew Cab 4WD	6,850 lb	11,000 lb	4,150 lb
Laramie Crew Cab LB 4WD	7,042 lb	11,400 lb	4,358 lb
Laramie Mega Cab 4WD	7,177 lb	11,400 lb	4,223 lb
Longhorn 4x2 Crew Cab 6'4" Box	6,622 lb	10,700 lb	4,077 lb
Longhorn 4x2 Crew Cab 8' Box	6,800 lb	11,100 lb	4,300 lb
Longhorn 4x4 Crew Cab 6'4" Box	7,009 lb	11,000 lb	3,991 lb
Longhorn 4x4 Crew Cab 8' Box	6,418 lb to 7,190 lb	11,400 lb	4,211 lb
Longhorn 4x4 Mega Cab 6'4" Box	6,418 lb to 7,252 lb	11,400 lb	4,149 lb
Limited Crew Cab LB RWD	6,857 lb	11,100 lb	4,243 lb
Limited Crew Cab RWD	6,868 lb	10,700 lb	3,832 lb
Limited Crew Cab LB 4WD	6,418 lb to 7,247 lb	11,400 lb	4,153 lb
Limited Crew Cab 4WD	6,418 lb to 7,255 lb	11,000 lb	3,745 lb
Limited Mega Cab 4WD	6,418 lb to 7,536 lb	11,400 lb	3,865 lb

2021 RAM 3500: cargo and room by trim
Trim	Bed length	Front legroom	Rear legroom	Front headroom	Rear headroom
Tradesman 4x2 Reg Cab 8' Box, Tradesman 4x4 Reg Cab 8' Box, Big Horn 4x2 Reg Cab 8' Box, Lone Star 4x2 Reg Cab 8' Box, Big Horn 4x4 Reg Cab 8' Box, Lone Star 4x4 Reg Cab 8' Box	8.0 ft	40.9 in	43.1 in	39.8 in	40.3 in
Tradesman LB RWD, Tradesman Regular Cab LB DRW RWD, Lone Star Regular Cab LB RWD, Big Horn LB RWD, Tradesman LB DRW 4WD, Tradesman Crew Cab LB DRW RWD, Big Horn LB DRW RWD, Lone Star LB DRW RWD, Big Horn LB 4WD, Lone Star LB 4WD, Tradesman LB 4WD, Big Horn LB DRW 4WD, Lone Star LB DRW 4WD, Tradesman Crew Cab LB DRW 4WD, Big Horn Crew Cab LB DRW RWD, Lone Star Crew Cab LB DRW RWD, Big Horn Crew Cab LB DRW 4WD, Lone Star Crew Cab LB DRW 4WD, Big Horn Mega Cab DRW 4WD, Lone Star Mega Cab DRW 4WD, Laramie Crew Cab LB DRW RWD, Laramie Crew Cab LB DRW 4WD, Laramie Mega Cab DRW 4WD, Limited Longhorn Crew Cab RWD, Limited Longhorn Crew Cab LB RWD, Limited Longhorn Crew Cab LB DRW RWD, Limited Longhorn Crew Cab 4WD, Limited Longhorn Crew Cab LB 4WD, Limited Longhorn Mega Cab 4WD, Limited Longhorn Crew Cab LB DRW 4WD, Limited Crew Cab LB DRW RWD, Limited Longhorn Mega Cab DRW 4WD, Limited Crew Cab LB DRW 4WD, Limited Mega Cab DRW 4WD	N/A	40.9 in	43.1 in	40.9 in	40.3 in
Tradesman Crew Cab RWD, Tradesman Crew Cab 4WD, Big Horn Crew Cab RWD, Lone Star Crew Cab RWD, Big Horn Crew Cab 4WD, Lone Star Crew Cab 4WD, Laramie Crew Cab RWD, Laramie Crew Cab 4WD, Longhorn 4x2 Crew Cab 6'4" Box, Longhorn 4x4 Crew Cab 6'4" Box, Limited Crew Cab RWD, Limited Crew Cab 4WD	6.0 ft	40.9 in	40.2 in	40.9 in	39.8 in
Tradesman Crew Cab LB RWD, Tradesman Crew Cab LB 4WD, Big Horn Crew Cab LB RWD, Lone Star Crew Cab LB RWD, Big Horn Crew Cab LB 4WD, Lone Star Crew Cab LB 4WD, Laramie Crew Cab LB RWD, Laramie Crew Cab LB 4WD, Longhorn 4x2 Crew Cab 8' Box, Longhorn 4x4 Crew Cab 8' Box, Limited Crew Cab LB RWD, Limited Crew Cab LB 4WD	8.0 ft	40.9 in	40.2 in	40.9 in	39.8 in
Big Horn Mega Cab 4WD, Lone Star Mega Cab 4WD, Laramie Mega Cab 4WD, Longhorn 4x4 Mega Cab 6'4" Box, Limited Mega Cab 4WD	6.0 ft	40.9 in	43.1 in	40.9 in	40.3 in

Weight

Tradesman LB RWD: curb weight not listed.

Garage fit

2021 RAM 3500 in standard garages, centred
Garage	Fits	Spare length	Each side
Single, 12 x 22 ft	Yes	4.6 in	32.3 in
Single, 14 x 24 ft	Yes	28.6 in	44.3 in
Double, 20 x 20 ft	No	-19.4 in	80.3 in
Double, 24 x 24 ft	Yes	28.6 in	104.3 in

2021 RAM 3500 through a garage door
Door	Fits	Spare width	Above roof
8 ft wide, 7 ft tall	Yes	16.5 in	5.7 in
9 ft wide, 7 ft tall	Yes	28.5 in	5.7 in

Your garage

Second car

Garage 12 x 22 ft. Door 9 x 7 ft.

Yes. 4.6 in spare length. 32.3 in each side.
Door: 28.5 in spare width. 5.7 in above the roof.

Size class

Full-size truck.

Longest of 12 trucks (2021).

Median of 12 trucks (2021): 215.3 in long.

Bigger and smaller rivals

2021 RAM 3500 and rivals by length
Model	Length	vs 3500
RAM 3500	259.4 in	-
RAM 1500	232.9 in	-26.5 in
Ford F-150	231.7 in	-27.7 in
GMC Sierra 1500	229.6 in	-29.8 in
Chevrolet Silverado 1500	229.5 in	-29.9 in

Legroom and headroom

Tradesman LB RWD.

Front legroom: 40.9 inLowest of 13 trucks (2021).
Rear legroom: 43.1 inMore than 75% of 13 trucks (2021).
Front headroom: 40.9 inMore than 42% of 13 trucks (2021).
Rear headroom: 40.3 inMore than 92% of 13 trucks (2021).

What this cannot tell you

Outline is a body-style template scaled to these numbers.

Garage fit ignores shelves, steps and open doors.

2 or more sources
1 source
Model-level, rule or estimate
Sources disagree

How values are checked