Choose the Western Star 4900 for OTR driver comfort — its 82" sleeper options exceed the Peterbilt 589's 80" maximum. The Peterbilt 589 offers more peak power (605 hp vs 600 hp), giving it an edge for heavy-haul and mountainous routes.
| Spec | Peterbilt 589 257 available · from $150,000 | Western Star 4900 37 available · from $19,500 |
|---|---|---|
| Engine Options | ||
| Engine options | PACCAR MX-13, Cummins X15 | Detroit DD16, Cummins ISX15, Detroit DD13, Detroit DD15, Detroit Series 60 Tier III |
| Horsepower range | 400–605 hp | 350–600 hp |
| Peak torque | 2,050 lb-ft | 2,050 lb-ft |
| Weight Ratings | ||
| GVWR (max) | 80,000 lbs | — |
| GCWR | 250,000 lbs | — |
| Transmission Options | ||
| Transmissions | Eaton Fuller 18-speed, PACCAR Automated 12-speed (TX-12), Eaton Endurant HD 12-speed | — |
| Dimensions | ||
| Wheelbase options | 3 options (265"–295") | 1 options (448"–448") |
Choose the Western Star 4900 for OTR driver comfort — its 82" sleeper options exceed the Peterbilt 589's 80" maximum. The Peterbilt 589 offers more peak power (605 hp vs 600 hp), giving it an edge for heavy-haul and mountainous routes.
Both the Peterbilt 589 and Western Star 4900 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 Peterbilt 589 is built by Peterbilt and the Western Star 4900 is built by Western Star. Both are Class 8 conventional tractors but differ in powertrain options, cab dimensions, dealer networks, and MSRP.
The Peterbilt 589 tops out at 605 hp / 2050 lb-ft torque. The Western Star 4900 tops out at 600 hp / 2050 lb-ft. GVWR is 80,000 lbs for the Peterbilt 589 and similar lbs for the Western Star 4900.
TruckRadar has 294 Peterbilt 589 and Western Star 4900 trucks available right now from dealers nationwide. Search by make, model, price, and location at truckradar.ai.
| Sleeper sizes | 44", 58", 72", 80" | 34", 40", 54", 68", 82" |
| Pricing (estimated) |
| Base MSRP range | $180,000–$235,000 | — |