M1 Compatibility
The full-size Tune M1 fits the Ram 1500. It fits the 5'7" and 6'4" bed Ram 1500 (2009–present). Both standard bed lengths are supported.
The Ram 1500's payload varies significantly across trims and configurations: work trims offer ample headroom while luxury trims are tighter. The 5th gen (2019+) coil spring rear suspension changed the ride dramatically but didn't change the payload story.
Your payload number is on the sticker inside your driver's door jamb. See the payload guide for why the advertised number doesn't apply to your truck.
Cab + Bed: The Decision That Shapes Your Build
The 5th gen Ram 1500 ships in two cab sizes and two bed lengths. Picking the right combo affects under-platform storage, drivability, and payload margin more than the camper itself.
Quad Cab + 6'4" Bed
Extended cab with rear-hinged half-doors and a usable rear seat for occasional passengers. Comes only with the 6'4" bed. Solid M1 platform: real bed length for storage under the platform, decent rear-seat space, and payload that beats the Crew Cab variants. Good fit for couples who occasionally bring friends.
Crew Cab + 5'7" or 6'4" Bed
Full 4-door cab with proper rear seating — by far the most common Ram 1500 on the road. The bed choice is the call:
- 5'7" Crew Cab: easier to park and the most popular config off the lot. The M1 platform extends past the bed, and you lose meaningful storage under the platform. Doable but compromised.
- 6'4" Crew Cab: the best Ram config for an M1 build with a family. Adds about 9" of overall length, but you get a real bed for storage and a much better-proportioned rig.
Quick decision frame
Solo / couple maximizing payload and storage: Quad Cab + 6'4". Family vehicle that's also your camping rig: Crew Cab + 6'4". The 5'7" Crew Cab is the most common but the most compromised for an M1 build.
Ram 1500 Payload by Trim
Approximate community-sourced door sticker ranges. Always verify your specific truck.
| Trim | Approx. Door Sticker Range | M1 Build Verdict | Notes |
|---|---|---|---|
| Tradesman (5th Gen) | ~1,700–2,300 lbs | ✓ Strong Margin | Work trim, lightest config. Excellent payload headroom. |
| Big Horn / Lone Star | ~1,500–1,900 lbs | ✓ Workable | Good everyday balance. Plenty of room for a full M1 build. |
| Laramie | ~1,300–1,700 lbs | ✓ Workable | Mid-tier luxury. Still solid margins with disciplined build. |
| Rebel | ~1,200–1,500 lbs | ⚠ Tight | Off-road equipment adds weight. Model carefully. |
| Longhorn / Limited | ~1,000–1,400 lbs | ⚠ Tight | Heavy luxury features reduce margin. Full build needs careful planning. |
| TRX | ~1,200–1,310 lbs | ⚠ Tight | Supercharged V8, performance suspension. Ram rates the TRX at up to 1,310 lbs. |
| 4th Gen (2009–2018) | ~1,200–1,900 lbs | ⚠ Varies | Leaf spring rear. Varies widely by trim and options. Check sticker. |
4th Gen vs. 5th Gen: What Changed
The 5th gen Ram 1500 (2019+) replaced the traditional leaf spring rear suspension with a coil spring design, a first for half-ton trucks. The ride quality improvement is significant and widely praised. From a payload perspective, the coil spring system changes how the truck feels loaded but doesn't change the payload rating. The 5th gen generally offers similar or slightly better payload numbers than the 4th gen at comparable trim levels.
If you have a 4th gen Ram, the leaf springs give a stiffer loaded ride but otherwise the payload story is similar. Check your door sticker either way.
Realistic Payload Budget: Ram 1500 + M1
| Item | Weight | Notes |
|---|---|---|
| 100Ah LiFePO4 battery | ~26 lbs | Varies by brand |
| Mattress (4" foam) | ~18 lbs | Custom cut to platform size |
| 10 gal fresh water | 83 lbs | 8.34 lbs/gal |
| Camper gear & accessories | ~60 lbs | Estimate, varies widely |
| Driver | ~175 lbs | Use actual weight |
| Passenger | ~150 lbs | If applicable |
| Cab gear (bags, food, etc.) | ~30 lbs | Easy to underestimate |
| Full fuel tank (26 gal) | 164 lbs | 6.3 lbs/gal × 26 gal |
| Subtotal (everything except the M1) | ~706 lbs | What loads onto the truck before the camper |
| Tune M1 (base, full-size) | ~500 lbs | Dry weight, no gear (Tune spec) |
| Grand total (with M1) | ~1,206 lbs | What you're actually putting on the truck |
On a Big Horn at 1,700 lbs, that's ~494 lbs of headroom — comfortable margin for upgrades. On a Limited at 1,100 lbs, you're 106 lbs over and need to trim the load. A Tradesman at 2,000+ lbs gives you 800+ lbs to play with.
Ram 1500-Specific Tips
- Tradesman and Big Horn trims offer the best payload-per-dollar. If you're buying a Ram for M1 use, these are where the payload lives.
- The air suspension doesn't change your payload rating. It changes ride height and comfort under load, but your sticker number is still your sticker number.
- eTorque adds far less weight than the F-150 PowerBoost. The mild hybrid system has minimal curb weight impact. Still check your sticker, but eTorque owners rarely see meaningful payload loss compared to V8 equivalents.
- Both standard bed lengths work. The full-size M1 fits the 5'7" and 6'4" Ram 1500 bed (2009–present). Confirm your configuration at the Tune build consultation.