The Baja Boss M/T is Mickey Thompson's premium mud terrain radial, built on Powerply XD 3-ply sidewall construction that adds heavier denier cord to the angled third ply for puncture resistance and quicker steering response. An asymmetric tread pattern and extra large Sidebiters deliver off road bite while holding highway noise down, and the T4 silica compound is tuned for wet braking, cut and chip resistance and treadlife. In 44X13.50R20LT this flotation size measures 43.8 in overall diameter and 13.8 in section width, carries 3,970 lbs at 35 psi on an 11 in measured rim, and runs 22/32 in of tread depth. Stone ejector ribs keep gravel out of the tread grooves.
Specifications
| Type | Mud-terrain light truck radial (Baja Boss M/T) |
| Tire Size | 44X13.50R20LT |
| Load Index / Speed Rating | 128Q (3,970 lbs, up to 99 mph) |
| Load Range | C |
| Sidewall Construction | Powerply XD 3-ply |
| Sidewall Style | Black letters (BLK) |
| Overall Diameter | 43.8 in |
| Section Width | 13.8 in |
| Tread Width | 11.3 in |
| Tread Depth | 22/32 in |
| Measured Rim Width | 11.0 in |
| Approved Rim Widths | 9.0 in to 11.5 in |
| Max Load | 3,970 lbs at 35 psi |
| Approx. Weight | 111 lbs |
| Street Use | DOT approved for on-road and off-road use |
| Quantity | 1 |
| Part Number | 331199004 |
| Alternate Part Numbers | 249343 (Mickey Thompson part no.), 90000070891 (cross reference) |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
