Choose the Peterbilt 389 for OTR driver comfort — its 86" sleeper options exceed the Mack Granite's 0" maximum. The Peterbilt 389 offers more peak power (605 hp vs 505 hp), giving it an edge for heavy-haul and mountainous routes.
| Spec | Mack Granite 231 available · from $36,000 | Peterbilt 389 186 available · from $46,900 |
|---|---|---|
| Engine Options | ||
| Engine options | Mack MP8, Mack MP7, Cummins L9N | PACCAR MX-13, Cummins X15, Cummins ISX15 |
| Horsepower range | NaN–505 hp | 400–605 hp |
| Peak torque | 1,850 lb-ft | 2,050 lb-ft |
| Weight Ratings | ||
| GVWR (max) | — | 80,000 lbs |
| GCWR | — | 250,000 lbs |
| Transmission Options | ||
| Transmissions | Mack mDRIVE HD | Eaton Fuller 18-speed, Eaton Fuller 13-speed, Eaton Endurant HD 12-speed |
| Dimensions | ||
| Wheelbase options | 0 options (undefined"–undefined") | 5 options (230"–270") |
Choose the Peterbilt 389 for OTR driver comfort — its 86" sleeper options exceed the Mack Granite's 0" maximum. The Peterbilt 389 offers more peak power (605 hp vs 505 hp), giving it an edge for heavy-haul and mountainous routes.
Both the Mack Granite and Peterbilt 389 hold strong resale value among owner-operators and fleets. Resale depends heavily on mileage, maintenance history, and regional demand — not OEM brand alone. Check current listings on TruckRadar for real-world asking prices.
No. The Mack Granite is built by Mack and the Peterbilt 389 is built by Peterbilt. Both are Class 8 conventional tractors but differ in powertrain options, cab dimensions, dealer networks, and MSRP.
The Mack Granite tops out at 505 hp / 1850 lb-ft torque. The Peterbilt 389 tops out at 605 hp / 2050 lb-ft. GVWR is similar lbs for the Mack Granite and 80,000 lbs for the Peterbilt 389.
TruckRadar has 417 Mack Granite and Peterbilt 389 trucks available right now from dealers nationwide. Search by make, model, price, and location at truckradar.ai.
| Sleeper sizes |
| — |
| 63", 72", 76", 86" |
| Pricing (estimated) |
| Base MSRP range | — | $155,000–$215,000 |