BMW R 1250 RS (K54) — OEM Fluid, Tire Pressure & Maintenance Specs
1,254cc Air/Liquid-Cooled Boxer Twin DOHC ShiftCam · Source: BMW R 1250 RS (K54) (2019–2024) Official Owner’s Manual Maintenance Specifications
According to the BMW R 1250 RS (K54) (2019–2024) Official Owner’s Manual Maintenance Specifications, the 2019–2024 BMW R 1250 RS (K54) (chassis K54/0J81/0M81) requires 3.6 L (3.80 US qt) of SAE 5W-40 (JASO MA2, API SL / BMW Advantec Ultimate 5W-40) engine oil for a drain-only change and 4 L (4.23 US qt) with filter service (11427721779 / 11425B69258 (HF160)). Standard solo cold tire pressure is 250 kPa / 2.50 bar / 36 PSI front (120/70 ZR17) and 290 kPa / 2.90 bar / 42 PSI rear (180/55 ZR17), paired with 2× NGK LMAR8D-J / LMAR8AI-10 spark plug(s) and a YTZ14S / BMW AGM 12Ah battery.
Drain only: 3.6 L (3.80 US qt)
R 290 kPa (2.90 bar)
Est. Range: ~378 km (235 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 5W-40 · JASO MA2 · API SL / BMW Advantec Ultimate 5W-40 |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 3.6 L (3.80 US qt) • With filter/strainer: 4 L (4.23 US qt) • Complete dry overhaul: 4.4 L (4.65 US qt) |
| OEM Oil Filter Code & Type | 11427721779 / 11425B69258 (HF160) |
| 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 | 42 N·m (31.0 lb-ft / 4.28 kgf·m) — Use fresh crush washer |
| Final Drive / Bevel Gear Oil | 180 ml (0.18 L) — Hypoid Axle Oil G3 SAE 70W-80 / 75W-90 (180 ml exact) |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 120/70 ZR17 · Rear: 180/55 ZR17 (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 250 kPa / 2.50 bar / 36 PSI Rear: 290 kPa / 2.90 bar / 42 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 250 kPa / 2.50 bar / 36 PSI Rear: 290 kPa / 2.90 bar / 42 PSI |
| OEM Spark Plug & Quantity | NGK LMAR8D-J / LMAR8AI-10 × 2 (Gap: 0.8–1.0 mm) |
| OEM Battery Code & Rating | YTZ14S / BMW AGM 12Ah (12V 12.0Ah MF AGM) |
| Final Drive Maintenance | Cardan Shaft Final Drive — Replace rear bevel-gear hypoid oil at exact measured volume |
| 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 | 1254 cc · 136 hp @ 7,750 rpm · 143 N·m (105.5 lb-ft) @ 6,250 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 820 mm (32.3 in) · 243 kg (536 lbs) |
| Fuel Tank & Est. Real-World Range | 18 L (4.8 US gal) · ~21 km/L → ~378 km (235 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 10,000 km / 10,000 km • Air Filter / Spark Plug: 20,000 km / 20,000 km • Valve Clearance Check: 20,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Half-faired K54 Boxer sport-tourer stretching wheelbase slightly over the R 1250 R for high-speed stability while staying 36 kg lighter than the full-dress R 1250 RT.
Oil & Clutch Mechanical Engineering Note
Shares the K50/K54 ShiftCam wet-sump architecture taking 4.0 L of SAE 5W-40 JASO MA2 with left-side spin-on filter HF160 and a 42 N·m drain plug torque.
Garage Wrenching Gotchas
- Always check the right-side oil sight glass on the centerstand 5 minutes after warm shutdown so oil pooled in the left cylinder head drains back evenly.
- Read the hydraulic clutch reservoir cap inscription carefully before topping up—never mix mineral hydraulic fluid with glycol DOT 4 brake fluid.
5. Frequently Asked Questions (FAQ)
What oil volume, JASO grade, and oil filter code does the BMW R 1250 RS (K54) (2019–2024) require?
Because its wet multi-plate clutch shares engine oil with the gearbox, run SAE 5W-40 (JASO MA2) at 3.6 L (3.80 US qt) drain-only and 4 L (4.23 US qt) with filter (11427721779 / 11425B69258 (HF160)). Also service final drive 180 ml.
How do you accurately check the oil level on the R 1250 RS (K54), and what are its service intervals?
Hold the motorcycle dead-vertical on level ground 2–3 minutes after warm shutdown and verify the oil sits mid-way between the Upper and Lower marks in the crankcase sight glass—never on the sidestand. Torque the drain plug to 42 N·m with a new crush washer. Factory oil change intervals are every 10,000 km, with valve clearance inspection every 20,000 km.
What are the cold tire pressures, puncture repair type, seat height, and range of the R 1250 RS (K54)?
Fitted with 120/70 ZR17 front and 180/55 ZR17 rear tubeless rims (compatible with roadside plug kits), set cold tire pressures to 36 / 42 PSI (250/290 kPa) solo or 36 / 42 PSI loaded. Seat height is 820 mm (32.3 in) at 243 kg wet weight, delivering ~378 km per 18 L tank.