M1 Compatibility
The full-size Tune M1 fits the Toyota Tundra. It fits the 5.5', 6.5', 8' (2nd gen), and 8.1' (3rd gen) bed Tundra (2000–present). All standard Tundra bed lengths are supported.
The Tundra generally offers more payload headroom than mid-size trucks, making it a comfortable platform for the M1 when properly spec'd. The exception to watch: the 3rd gen iForce MAX hybrid's heavier drivetrain can reduce usable payload compared to non-hybrid trims.
Your payload number is on the sticker inside your driver's door jamb, not the spec sheet, not Toyota's website. See the payload guide for why these numbers diverge.
Cab + Bed Configurations
The full-size M1 fits all three current Tundra bed lengths. The cab/bed combo you pick mostly affects payload margin, daily drivability, and how much under-platform storage you have when the camper is on.
3rd gen (2022+): two cabs, two beds
- Double Cab + 6.5' or 8.1' bed: Smaller rear seats than CrewMax but lighter overall. The 8.1' bed is the longest factory bed in the 3rd gen Tundra lineup and gives you the most under-platform storage. Worth seeking out if hauling gear matters as much as sleeping in the camper.
- CrewMax + 5.5' or 6.5' bed: Real four-door rear seats with limo-like legroom; the most family-friendly Tundra. The 5.5' CrewMax is the best-selling combo but gives the least bed-floor space. The 6.5' CrewMax is the all-rounder.
2nd gen (2007–2021): more variety
- Regular Cab + 8' bed (early 2nd gen, rare): two-door, pure work-truck spec, most payload of the lineup but limited cab storage.
- Double Cab + 6.5' or 8' bed: Common 2nd gen config; smaller rear seats but solid payload margin.
- CrewMax + 5.5' bed only: 2nd gen CrewMax was 5.5' bed exclusively. Most family-friendly cab but the shortest bed.
Quick decision frame
- Solo or couple, want the most under-platform storage: Double Cab + 8.1' bed (3rd gen) or 8' bed (2nd gen).
- Family of 4+ that needs real rear seats: CrewMax + 6.5' bed (3rd gen) or CrewMax 5.5' (2nd gen).
- Best all-around M1 setup: CrewMax + 6.5' bed on a non-hybrid 3rd gen.
The M1 fits, ties down, and works on all of the above. Wheelbase varies meaningfully across these combos, so test-drive on the kind of roads you actually camp on if you'll see tight forest service roads regularly.
Toyota Tundra Payload by Trim
These are approximate community-sourced ranges. Your door sticker is the only authoritative number.
| Trim / Config | Approx. Door Sticker Range | M1 Build Verdict | Notes |
|---|---|---|---|
| 3rd Gen (2022+) SR / SR5 (V6) | ~1,500–1,800 lbs | ✓ Strong Margin | Non-hybrid 3.5L V6 trims. Good payload headroom for a full M1 build. |
| 3rd Gen TRD Off-Road / Sport (V6) | ~1,400–1,600 lbs | ✓ Workable | Heavier from factory but still ample room on most builds. |
| 3rd Gen Limited / Platinum / 1794 (V6) | ~1,300–1,500 lbs | ✓ Workable | Fully loaded trim, but Tundra's GVWR provides buffer. |
| 3rd Gen iForce MAX (Hybrid) | ~1,100–1,400 lbs | ⚠ Varies | Hybrid system adds significant weight. Check your specific sticker carefully. |
| 3rd Gen Capstone (Hybrid) | ~1,200–1,485 lbs | ⚠ Check Sticker | Toyota rates the Capstone at 1,485 lbs. Luxury equipment adds weight. Verify your door sticker. |
| 2nd Gen (2007–2021) SR5/TRD | ~1,300–1,600 lbs | ✓ Workable | Generally solid payload. Varies by bed size, cab config, and options. |
The iForce MAX Hybrid Payload Trap
The 3rd gen Tundra's hybrid system is a major appeal (more torque, better fuel efficiency) but the battery pack and electric motors add meaningful curb weight. Owners who've checked their stickers report their hybrid Tundra's payload is meaningfully lower than a comparable V6 configuration.
This doesn't mean hybrid Tundras can't run the M1, many do. It means you must check your actual door sticker rather than assuming the Tundra's generally generous payload numbers apply to your specific truck.
Realistic Payload Budget: Tundra + M1
Non-M1 items that eat into your payload on a typical Tundra M1 build:
| 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; Tundra owners often carry more |
| 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 (32 gal) | 202 lbs | 6.3 lbs/gal × 32 gal (most trims; SR/SR5 base: 22.5 gal/142 lbs) |
| Subtotal (everything except the M1) | ~744 lbs | What loads onto the truck before the camper |
| Tune M1 (base) | ~500 lbs | Dry weight, no gear (Tune spec) |
| Grand total (with M1) | ~1,244 lbs | What you're actually putting on the truck |
On a Tundra with a 1,500 lb door sticker, this build comes in at ~1,244 lbs total — about 256 lbs of headroom. Comfortable. On a hybrid Tundra at 1,200 lbs, the same build is roughly 44 lbs over — that's why hybrid owners need to check their sticker first and consider trimming water or gear. Use the calculator to model your specific build.
Tundra-Specific Tips
- Check your specific sticker. Don't assume Tundra = plenty of payload. Hybrid trims especially can surprise you.
- All standard Tundra bed lengths work. The full-size M1 fits the 5.5', 6.5', 8' (2nd gen), and 8.1' (3rd gen) bed Tundra. No restrictions there.
- Steel bumpers and armor are a real payload hit on hybrid trims. A steel front bumper, sliders, and skids can add 150–300+ lbs — all of it coming out of your payload budget. If you're already tight on a hybrid Tundra, this matters.
- Tailgate dust gap: Toyota trucks can have a gap where the tailgate meets the camper floor. Extruded Solutions seal kit or a GapShield cover are the community fixes.