Dedicated Subsystem WorkbenchPlatform Gen: 2019–2024

2020 BMW R 1250 GS Cylinder Compression & Leakdown Diagnostic Engine

Factory compression specs for 2020 BMW R 1250 GS: standard pressure 170 - 215 PSI (1172 - 1482 kPa), service limit 145 PSI, dry vs wet test diagnostics and acoustic leak stethoscope.

Technical PassportOEM VERIFIED

Engine

1254cc

Cooling

Liquid/Air-Cooled

Final Drive

Shaft Drive

Engine Oil

4.00 L (4.23 US qt)

Spark Plug

NGK LMAR8D-J

Front Tire

120/70R19

Gen 2019–2024

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 2019 through 2024.

SPECS-TO-CART BUNDLESFactory Direct-Fit Maintenance Bundles Available

1-Click verified Motul engine oil service kits, race filters, spark plugs, and brake fluid pre-measured for this 2020 BMW R 1250 GS.

Configure Service Bundles→

Select Model Year:(Active: 2020)
6 Production Years (2019–2024)

2019 2020 2021 2022 2023 2024

Cylinder Compression & Leakdown Diagnostic Engine

Multi-Cylinder Dry vs. Wet Test Bench, Differential Pressure Regulator & Acoustic Stethoscope Locator

Ratio: 12.5:1Std: 170-215 PSILimit: 145 PSIWhip Adapter: M10 x 1.0

Diagnostic Presets:

Cyl #1 (Left Boxer)IN-SPEC

199PSI(1372 kPa)

Cyl #2 (Right Boxer)IN-SPEC

197PSI(1358 kPa)

Cross-Cylinder Variance: Δ 2 PSI (OEM Limit: ≤ 14 PSI)

VARIANCE IN-SPEC

All cylinders demonstrate strong, balanced mechanical sealing. Piston ring packs, cylinder cross-hatch, and valve seats are within factory specification.

Official Workshop Manual Compression Test Protocol

Step 0 of 5 Completed

Step 1: Engine Operating Temperature

Run engine until coolant reaches 60°C - 80°C (140°F - 176°F). Cylinder expansion brings rings and pistons to true operating clearances.

Step 2: Spark Plug Removal & Port Clean

Blow compressed air around spark plug wells to eject grit, then remove all spark plugs. Thread in M10 x 1.0 whip adapter hand-tight with fresh O-ring.

Step 3: Wide-Open Throttle (WOT) Lock

Hold throttle grip fully wide open (or lock throttle bodies open) to eliminate intake butterfly vacuum restriction and ensure 100% volumetric cylinder filling.

Step 4: Battery Tender Voltage Stabilization

Connect a 12V shop battery tender or booster. Starter must sustain uninterrupted cranking speed (350 RPM) to build maximum dynamic stroke pressure.

Step 5: Crank 4-6 Compression Strokes

Engage starter until gauge needle ceases rising (typically 4 to 6 strokes). Record maximum peak pressure and compare against the OEM limits above.

Official NHTSA Safety Recalls & Technical Bulletins

5 Active Campaigns

U.S. Department of Transportation compliance database (Title 49 U.S.C. Chapter 301).

Verify VIN on NHTSA.gov

The U.S. National Highway Traffic Safety Administration reports 5 safety recall campaigns associated with this platform. Independent repair shops and riders should confirm that authorized dealership warranty remedies have been applied.

NHTSA #20V495000EQUIPMENT:OTHER:LABELS

Received: 20/08/2020▼

Defect Description

BMW of North America, LLC (BMW) is recalling certain 2021 R 1250 RT, R 1250 R, R 1250 RS, R 1250 GS and R 1250 GS Adventure motorcycles. The tire pressure labels may not remain affixed to the motorcycle frame. As a result, these motorcycles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 120, "Wheels and Rims-Other Than Passenger Cars."

Safety Hazard / Consequence

If the label detaches from the motorcycle, proper tire pressure information may not be readily available. This could result in the rider improperly filling the tires which may affect motorcycle handling and control, increasing the risk of a crash.

Factory Remedy & Repair Action

BMW will notify owners, and dealers will replace the tire pressure label, free of charge. The recall began October 19, 2020. Owners may contact BMW customer service at 1-800-525-7417.

Manufacturer Notes: Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

NHTSA #23V011000POWER TRAIN:MANUAL TRANSMISSION:INTERNAL:SHAFT:INPUT

Received: 18/01/2023▼

NHTSA #20V476000SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER

Received: 13/08/2020▼

NHTSA #20V166000SERVICE BRAKES, HYDRAULIC:FLUID

Received: 19/03/2020▼

NHTSA #20E013000SERVICE BRAKES, HYDRAULIC:FLUID

Received: 19/03/2020▼

OEM Workshop Archives

Official Factory Service Bulletins & Field Updates

2 Documented Bulletins

Bulletin #BMW-23V011Safety Recall SIB 23 01 23 & 33 01 20: R 1250 GS Gearbox Input Shaft Torsion & Paralever Pivot

Source: BMW_Recall23V011_RCRIT-23V011-2024.pdf

Mandated Torques:Torque: 100 N·m (74 lbf·ft) (Paralever Pivot Pin ISA Bolt - M12 x 1.5 x 80 with Loctite 2701)Torque: 56 N·m (41 lbf·ft) (Paralever Torque Reaction Strut to Bevel Gear Housing)Torque: 60 N·m (44 lbf·ft) (Rear Wheel 5x Lug Bolts - M10 x 1.25 Diagonal)Torque: 20 N·m (15 lbf·ft) (Bevel Gear Oil Filler / Drain Plugs)

Consumable Specs:BMW Hypoid Axle Oil G3 (75W-90, 180 ml)Loctite 2701 High-Strength Anaerobic Retainer (83 19 2 210 397)Staburags NBU 30 PTM Spline Grease

Genuine Part Numbers:07 12 9 907 07507 51 2 296 48683 19 2 210 39733 11 7 695 766

NHTSA Recall 23V-011 & 20V-165SIB 23 01 23 / SIB 33 01 20

R 1250 GS / GSA Gearbox Input Shaft & Paralever Rear Drive

DME engine management torsional shock absorption, Paralever final drive pivot pin torque (100 N·m), and bevel gear fluid specifications.

Federal Safety RemedyPivot Pin 100 N·m / Hypoid 180 ml

Click any element above for DME anti-shock software parameters, Paralever pivot pin replacement, and final drive fluid volumes.

Factory Tightening TorquesService Manual

Paralever Rear Drive Pivot Pin Bolt (M12 × 1.5 × 80)100 N·m (74 lb-ft)

ISA bolt with high-strength Loctite 2701 (Recall 20V-165)

Paralever Torque Reaction Strut to Bevel Gear56 N·m (41 lb-ft)

M10 bolt securing reaction arm to final drive housing

Rear Wheel Lug Bolts (5x M10 × 1.25)60 N·m (44 lb-ft)

Torque in diagonal cross-pattern with wheel on ground

Final Drive Bevel Gear Oil Filler Plug (M12 × 1.5)20 N·m (15 lb-ft)

Replace O-ring (11.2 × 1.8 mm); refill 180 ml Hypoid Axle Oil G3

Final Drive Bevel Gear Oil Drain Plug20 N·m (15 lb-ft)

Clean magnetic tip of metallic wear debris

Swinging Arm Pivot Pin Left (Fixed Bearing)100 N·m (74 lb-ft)

Pivot bearing pin on frame main spar

Bulletin #BMW-20V476Safety Recall SIB 34 03 21: R 1250 GS & S 1000 RR Front Brake Caliper Fluid Weepage Check

Source: BMW_Recall20V476_RCRIT-20V476-8248.pdf

Mandated Torques:Torque: 38 N·m (28 lbf·ft) (Front Radial Brake Caliper Mounting Bolts - 4x M10 x 65)Torque: 24 N·m (17.7 lbf·ft) (Brake Hose Union Banjo Bolt - New Sealing Washers)Torque: 10 N·m (7.4 lbf·ft) (Caliper Air Bleeder Valve)Torque: 19 N·m (14 lbf·ft) (Front Brake Rotor Torx Screws - 5x M8)

Consumable Specs:BMW Motorrad DOT 4 Brake Fluid (83 13 2 405 977)Genuine Sealing Washers A10 x 13.5 (07 11 9 963 072)Isopropyl Alcohol Contact Cleaner

Genuine Part Numbers:34 11 7 105 63734 11 7 105 63883 13 2 405 97707 11 9 963 072

NHTSA Recall 20V-476SIB 34 03 21 / SIB 34 02 21