The Yamaha TDM 850 motorcycle specifications include a 849 cc (51.81 cu in) engine, a 5-speed gearbox, and a listed weight of 230 kg (507.1 lb).
Key specifications
The 1991 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
How the Yamaha TDM 850 compares
This compares the motorcycle with all Yamaha models in this specifications database. The blue marker is this model and the grey line is the Yamaha database average.
About 54% higher than the Yamaha database average. Around the 77th percentile across Yamaha models.
About 23% heavier than the Yamaha database average. Around the 75th percentile across Yamaha models.
About 38% larger than the Yamaha database average. Around the 82nd percentile across Yamaha models.
Yamaha database percentile rankings
Percentiles show where this motorcycle sits across the Yamaha specifications database. They are descriptive database rankings, not performance ratings.
849 cc — larger displacement than about 77% of Yamaha models.
230 kg — heavier than about 75% of Yamaha models, or lighter than about 25%.
18 L — larger than about 82% of Yamaha fuel tanks in this database.
Mechanical overview
Additional useful specifications
| Front tire size | 110/80-18 |
|---|---|
| Rear tire size | 150/70-17 |
| Front tire width | 110 mm |
| Front tire aspect ratio | 80% |
| Front rim diameter | 18 in |
| Rear tire width | 150 mm |
| Rear tire aspect ratio | 70% |
| Rear rim diameter | 17 in |
| Bore/stroke ratio | 1.33:1 (Oversquare) |
Engine specifications
| Engine type | Twin, four-stroke |
|---|---|
| Displacement | 849 cc (51.81 cu in) |
| Bore × stroke | 89.5 x 67.5 mm (3.5 x 2.7 inches) |
| Compression ratio | 9.2:1 |
| Valves per cylinder | 5 |
| Cooling system | Liquid |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
Transmission and drivetrain
| Gearbox | 5-speed |
|---|---|
| Final drive | Chain (final drive) |
Brakes, wheels and tires
| Front brakes | Dual disc |
|---|---|
| Rear brakes | Single disc |
| Front tire | 110/80-18 |
| Rear tire | 150/70-17 |
Dimensions and weight
| Wet weight | 230 kg (507.1 lb) |
|---|
Fuel and emissions
| Fuel capacity | 18.00 L (4.76 US gal) |
|---|
Performance
| Top speed | 207.0 km/h (128.6 mph) |
|---|
Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from Yamaha models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Yamaha information before relying on them. Visit the official Yamaha website.