Triumph Thunderbird Storm / Commander / LT (1700) — OEM Fluid, Tire Pressure & Maintenance Specs
1,699cc Liquid-Cooled 270° Parallel-Twin DOHC Big-Bore (Twin-Headlight Belt Muscle Cruiser) · Source: Triumph Thunderbird Storm / Commander / LT (1700) (2011–2018) Official Owner’s Manual Maintenance Specifications
According to the Triumph Thunderbird Storm / Commander / LT (1700) (2011–2018) Official Owner’s Manual Maintenance Specifications, the 2011–2018 Triumph Thunderbird Storm / Commander / LT (1700) (chassis B17BA/B17BC) requires 3.8 L (4.02 US qt) of SAE 10W-40 (JASO MA2, API SH or higher (Castrol Power 1)) engine oil for a drain-only change and 4 L (4.23 US qt) with filter service (T1218001 / HF204). Standard solo cold tire pressure is 248 kPa / 2.48 bar / 36 PSI front (120/70 R19 60V) and 290 kPa / 2.90 bar / 42 PSI rear (200/50 R17 75V), paired with 4× NGK DPR7EA-9 (Twin-Spark 4 Plugs) spark plug(s) and a YTX20L-BS battery.
Drain only: 3.8 L (4.02 US qt)
R 290 kPa (2.90 bar)
Est. Range: ~370 km (230 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 10W-40 (Alt: SAE 10W-50) · JASO MA2 · API SH or higher (Castrol Power 1) |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 3.8 L (4.02 US qt) • With filter/strainer: 4 L (4.23 US qt) • Complete dry overhaul: 4.5 L (4.76 US qt) |
| OEM Oil Filter Code & Type | T1218001 / HF204 |
| Correct Oil Level Check Method | Hold bike upright on level ground 3–5 min after warm shutdown; read crankcase sight glass |
| Oil Drain Bolt Torque | 25 N·m (18.4 lb-ft / 2.55 kgf·m) — Use fresh crush washer |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 120/70 R19 60V · Rear: 200/50 R17 75V (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 248 kPa / 2.48 bar / 36 PSI Rear: 290 kPa / 2.90 bar / 42 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 248 kPa / 2.48 bar / 36 PSI Rear: 290 kPa / 2.90 bar / 42 PSI |
| OEM Spark Plug & Quantity | NGK DPR7EA-9 (Twin-Spark 4 Plugs) × 4 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YTX20L-BS (12V 18.0Ah Heavy-Duty AGM) |
| Final Drive Maintenance | Reinforced Toothed Final Belt — Verify pulley alignment and belt deflection |
| Brake Fluid & Coolant | DOT 4 · OAT ethylene-glycol coolant for aluminum radiators (50:50 premix) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 1699 cc · 98 hp @ 5,200 rpm · 156 N·m (115.1 lb-ft) @ 2,950 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 700 mm (27.6 in) · 339 kg (747 lbs) |
| Fuel Tank & Est. Real-World Range | 22 L (5.8 US gal) · ~16.8 km/L → ~370 km (230 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 16,000 km / 16,000 km • Air Filter / Spark Plug: 16,000 km / 32,000 km • Valve Clearance Check: 32,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Factory 1,699cc big-bore evolution producing 156 N·m; offered as the twin-headlight drag-bar Storm plus the fat-tired Commander and whitewall LT tourers.
Oil & Clutch Mechanical Engineering Note
Stout 156 N·m low-RPM torque loads the wet multiplate clutch heavily—use 4.0 L of full-synthetic SAE 10W-40 or 10W-50 JASO MA2 with filter HF204.