Which Ram truck has the biggest cab?

There's no question that modern crew cab trucks are bigger than anything that have come before them. We're not just talking about their massive exterior dimensions, either—now that ultra-long, super-wide full-size trucks are now the norm, that sheet metal push has also brought with it a revolution in terms of interior volume.

In fact, it's safe to say that the current slate of four-door trucks offer better passenger accommodations than all but the most limo-like luxury sedans, especially when considering the sheer amount of room available in the rear seat. It's little wonder then that crew cab trucks have taken over as daily drivers for millions of American buyers.

Which full-size truck leads the pack when it comes to rear passenger room? In truth, big pickups are all pretty close when it comes to stretching out, but there are a handful that rise above the rest of the pack and offering class-leading amounts of leg room and head room.

1. 2020 Ram 1500 Crew Cab

One only has to spend a little bit of time in the 2020 Ram 1500 Crew Cab's back seat to appreciate the startling amount of space it has to offer.

With 45.2 inches of legroom available on top of a decent 39.8 inches of headroom, the Ram 1500 leads the way among four-door pickups in terms of accommodating taller passengers. Even better is the amount of room that Ram makes available for cargo, with substantial storage available with the back bench folded out of the way.

2. 2020 Ford F-150 Super Crew

Coming in nearly with nearly 2 inches less rear leg room (43.6 inches in total), but roughly half an inch more headroom (40.4 inches), the 2020 Ford F-150 Super Crew is also a substantial player in the biggest back seat sweepstakes.

With just a little bit more clearance for your sombrero, cowboy hat, or mohawk, the Super Crew ties for first place with the most head room in the full-size segment.

3. 2020 GMC Sierra / 2020 Chevrolet Silverado Crew Cab

The GMC Sierra and Chevrolet Silverado share an identical platform, and as such their Crew Cab four-door pickups also happen to feature the same interior dimensions.

Although redesigned around roughly the same cadence as the Ford F-150 and the Ram 1500, the 2020 versions of the Sierra and the Silverado are stuck tied for third fiddle in terms of rear leg room - although only just, missing out on just 0.2 inches of sneaker stretch was compared to the Ford.

You'd probably only notice that difference if you forgot to take your spurs off before sliding onto the back bench, and it's worth noting that, like the F-150, the Silverado and the Sierra squeak ahead of the Ram 1500 when it comes to headroom.

4. 2020 Toyota Tundra Crew Max

There's really no way around it: although it might say '2020' on the window sticker, the Toyota Tundra Crew Max is the oldest full-size truck on the market.

As a result, it hasn't kept up with the times as the rest of the Detroit-based class-leaders have gotten swole and puffed up their interiors.

The Toyota Tundra four-door pickup falls a full 3 inches behind the Ram 1500, and its 42.3 inch measure also sits an inch back of the Chevrolet and Sierra entries when it comes to leg room. It's also the only full-size truck on the market that features less head room than the Ram at 38.9 inches.

5. 2020 Nissan Titan Crew Cab

The Nissan Titan Crew Cab is a fairly recent effort from the Japanese brand, which is why we have to wonder why it fails to deliver when it comes to its back seat.

Checking in at 38.5 inches, the Titan's rear quarters are a whopping 7 inches or so smaller than the class-leading Ram, and even trailer the Tundra by nearly 4 inches. At the very least, headroom remains competitive with a measure of 40.4 inches, but unless you're wearing a top hat you probably would want to trade a little of that open sky for some space to kick back.

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