Choose the Western Star 57X for OTR driver comfort — its 72" sleeper options exceed the Mack Pinnacle's 70" maximum. The Western Star 57X offers more peak power (600 hp vs 505 hp), giving it an edge for heavy-haul and mountainous routes.
| Spec | Mack Pinnacle 106 available · from $21,995 | Western Star 57X 290 available · from $19,500 |
|---|---|---|
| Engine Options | ||
| Engine options | Mack MP8, Mack MP7, Mack MP8HE | Detroit DD16, Detroit DD13 Gen 5, Detroit DD15 Gen 5 |
| Horsepower range | 325–505 hp | 370–600 hp |
| Peak torque | 1,860 lb-ft | 2,050 lb-ft |
| Weight Ratings | ||
| GVWR (max) | 80,000 lbs | — |
| GCWR | 220,000 lbs | — |
| Transmission Options | ||
| Transmissions | mDRIVE 12-speed Automated, Eaton Fuller 10-speed, mDRIVE HD 14-speed Automated | Detroit DT12 Direct and Overdrive AMT |
| Dimensions | ||
| Wheelbase options | 5 options (197"–255") | 0 options (undefined"–undefined") |
Choose the Western Star 57X for OTR driver comfort — its 72" sleeper options exceed the Mack Pinnacle's 70" maximum. The Western Star 57X offers more peak power (600 hp vs 505 hp), giving it an edge for heavy-haul and mountainous routes.
Both the Mack Pinnacle and Western Star 57X 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 Pinnacle is built by Mack and the Western Star 57X is built by Western Star. Both are Class 8 conventional tractors but differ in powertrain options, cab dimensions, dealer networks, and MSRP.
The Mack Pinnacle tops out at 505 hp / 1860 lb-ft torque. The Western Star 57X tops out at 600 hp / 2050 lb-ft. GVWR is 80,000 lbs for the Mack Pinnacle and similar lbs for the Western Star 57X.
TruckRadar has 396 Mack Pinnacle and Western Star 57X trucks available right now from dealers nationwide. Search by make, model, price, and location at truckradar.ai.
| Sleeper sizes | 48", 65", 70" | 60", 72" |
| Pricing (estimated) |
| Base MSRP range | $130,000–$175,000 | — |