For a Power Wagon you actually wheel hard, 35" or 37" mud-terrain tires are the right answer. 35s fit a 3" lift with factory wheels (need spacers for clearance at full stuff). 37s need 4-5" of lift, +25mm wheel spacers minimum or aftermarket wheels, and a re-gear to 4.56 — the factory 4.10s feel terrible on 37s.
The Power Wagon's factory 4.10 gears and 33" tires make for a great daily/light-trail setup. When you go mud-terrain, two paths:
**35" MT path (LT315/70R17 = 34.4")** — fits with a 3" lift kit (Carli or AEV class) and factory wheels with 1.5" spacers, OR with the factory wheels alone if you accept some rub at full articulation. Re-gear is optional with 35s — the factory 4.10 with the 5.7 HEMI is acceptable, though the 6.4 HEMI handles them better. BFG KM3 LT315 is the reference. Milestar Patagonia is the budget pick.
**37" MT path (LT37x12.50R17)** — this is the build. Requires:
BFG KM3 LT37x12.50R17 is the dominant choice for Power Wagons in 37s — proven sidewall, good wet performance for an MT. Toyo Open Country M/T and Nitto Trail Grappler are alternatives with slightly different shoulder lug designs. Avoid no-name 37s on a Power Wagon — it weighs 6,800 lb stock and chews cheap sidewalls fast.
Honest framing: don't run 37s if you're not actually going to crawl. The MPG hit, the re-gear cost ($1,200-1,800), the fender trim, the wheels — adds up to $4-6k beyond the tires themselves. A 35" KM3 setup gets you 90% of the off-road capability for half the money.
| Part | Vendor | Est. price |
|---|---|---|
| BFGoodrich Mud-Terrain T/A KM3 LT315/70R17 (34.4") | BFGoodrich | ~$420 |
| BFGoodrich KM3 LT37x12.50R17 (37") | BFGoodrich | ~$530 |
| Milestar Patagonia M/T LT315/70R17 | Milestar | ~$310 |
| Toyo Open Country M/T LT37x12.50R17 (37") | Toyo | ~$590 |
| Nitto Trail Grappler LT37x12.50R17 | Nitto | ~$560 |
Written and maintained by an AZ wheeler and driveway wrencher. Always cross-reference your factory service manual — modifications affect vehicle safety and warranty. Work at your own risk.