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Dedicated Subsystem WorkbenchPlatform Gen: 2006–2026

2012 Vespa GTS 300 / GTS 300 Super Tire Sizes, Cold Pressures & Gearing Ratios

OEM tire sizes, front cold PSI (), rear cold PSI (), sprocket teeth count, final drive ratio, and chain pitch for 2012 Vespa GTS 300 / GTS 300 Super.

Gen 2006–2026

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 2006 through 2026.

Engine
278cc
Drive
Not Available
Cooling
Liquid-Cooled with Dual Lateral Front Radiators & Electric Fan

Tire Engineering & Multi-Scenario Pressure Matrix

ETRTO Validated
Inflation targets calibrated across operating modes, verified rim width ranges, and certified alternate sizes.
Shop Direct-Fit Tires
Multi-Scenario Inflation Pressures
Solo Street / CommutingCold Baseline
Front: Not Available
Rear: Not Available
Two-Up Passenger & LuggageMax Load
Front: Not Available
Rear: Not Available
Off-Highway / Terrain Pressure
Maintain OEM cold baseline for street transfers; adjust -2 to -4 PSI for loose terrain.
Rim Geometry & ETRTO Envelopes
Front Wheel
OEM Rim Width:Not Available
Permissible Envelope:Not Available
Rear Wheel
OEM Rim Width:Not Available
Permissible Envelope:Not Available
Operating outside ETRTO envelope width alters crown radius, accelerates shoulder wear, and impacts lean stability.
Factory Dimensions & Verified Alternates
Factory Standard Sizes
Front:120/70-12 51P Tubeless
Rear:130/70-12 62P Tubeless
Verified Alternate Fitments
Factory standard sizing recommended.
Alternate profiles verified for swingarm, chain guard, and fender clearances.

Final Drive Gearing & Speed/RPM Calculator

Belt Drive
Factory reduction ratios, interactive sprocket gearing simulator, 6th gear cruising RPM matrix, and swingarm chain adjustment tolerances.
Drive Architecture
Poly-Chain Carbon Belt
OEM Pulleys
29T Transmission / 68T Wheel
OEM Final Ratio
2.345 : 1
Belt Teeth & Width
T •
Cold Tension Deflection
Quick Gearing Presets
Front Transmission PulleyStock: 29T
29 Teeth
Factory teeth count
Rear Wheel Belt PulleyStock: 68T
68 Teeth
Factory teeth count
Drive Ratio & Torque Impact
Calculated Final RatioStock: 2.345
2.345 : 1
Drivetrain Torque Delta
OEM Factory Baseline Dynamics
Balanced all-around factory engineering calibrated for EPA emissions and street usability.
Countershaft Speedo Variance:0.0%
Speedometer reads true to factory calibration standards.
Cruising Engine RPM in 6th Gear
60 MPH
Stock: 3,829 RPM
3,829 RPM
70 MPH
Stock: 4,467 RPM
4,467 RPM
80 MPH
Stock: 5,105 RPM
5,105 RPM
Calculated using factory 6th gear ratio (0.923), primary reduction (1.681), and 130/70-12 62P Tubeless rolling circumference.
Belt Tension & Deflection Spec
Cold Deflection Tolerance
Check tension using a 10-lb belt tension gauge at the lower belt run midpoint window on the side stand.
Belt Architecture
T •
Recommended Belt:
Factory Chassis Geometry

Chassis Alignment, Drive Tension & Rear Axle Calibration

Precision workshop alignment tools, dynamic drive tension tolerances, and axle spindle calibration for the 2012 Vespa GTS 300 / GTS 300 Super.

Belt Drive Architecture

Secondary Belt Deflection & 10-lb Tension Calibration

FACTORY BELT DEFLECTION SPEC:
Measure cold deflection with a spring-loaded belt tension tool applying exactly 10 lbs (4.5 kg) of upward force at the lower belt run inspection window on jiffy stand.
CARBON BELT TOOTH & FLANGE INSPECTION:
T •
Inspect polyurethane cog teeth for stone gouges or embedded gravel. Verify rear pulley chrome flanges show even belt tracking without edge fraying.

Official NHTSA Safety Recalls & Technical Bulletins

0 Open Campaigns (Clean)
U.S. Department of Transportation compliance database (Title 49 U.S.C. Chapter 301).
Verify VIN on NHTSA.gov
No Active Federal Safety Recalls Reported
The U.S. DOT National Highway Traffic Safety Administration (NHTSA) records zero open safety recall campaigns for the 2012 Vespa GTS 300 / GTS 300 Super platform. Always check your individual 17-digit VIN at an authorized dealership or via NHTSA.gov for individual recall completions.
OEM Workshop Archives

Official Factory Service Bulletins & Field Updates

1 Documented Bulletin
Bulletin #FSB-VES-GTS-01Technical Service Bulletin FSB-VES-GTS-01: Single-Sided Trailing Link Front Spindle Bearing Overhaul, ASR Sensor Air Gap & Rear Hub Gear Oil Service
Source: Piaggio_Vespa_GTS300_Trailing_Link_ASR_Service.pdf
Mandated Torques:Torque: 90–110 N·m (66–81 lb-ft) (Front Wheel Hub Castle Nut & Cotter Pin)Torque: 40–45 N·m (30–33 lb-ft) (Front Trailing Link Shock Lower Mounting Bolt)Torque: 40–45 N·m (30–33 lb-ft) (Upper Steering Column Locking Ring Nut)Torque: 15–18 N·m (11–13 lb-ft) (Rear Hub Final Gear Oil Drain & Fill Plugs)
Consumable Specs:Eni i-Ride PG 5W-40 Full Synthetic OilEni Rotra Bike 80W-90 Hub Gear OilWaterproof Marine Calcium-Sulfonate Grease (Trailing Link Needle Rollers)
Genuine Part Numbers:B0181521A0082725638141R000564
Vespa Italian Heritage EngineeringGTS 300 / Super HPE

Vespa GTS 300 Trailing-Link Front Suspension, ASR Sensor & Hub Oil Architecture

Single-sided trailing link (40–45 N·m), front hub castle nut 90–110 N·m, ASR tone ring air gap 0.8–1.2 mm, and 250ml 80W-90 hub oil.

STEERING COLUMN (40–45 N·m)TRAILING LINK PIVOTNeedle Bearings RepackLOWER BOLT: 40–45 N·mCASTLE NUT: 90–110 N·mStainless Cotter PinASR / ABS SENSOR GAP0.8–1.2 mm (Brass Feeler)REAR HUB GEAR OIL250ml 80W-90 (15–18 N·m)
Click on Trailing Link Arm, Front Hub Castle Nut, ASR Sensor Gap, or Rear Hub Gear Oil to inspect factory service specs.

Explore Other Subsystems for this 2012 Vespa GTS 300 / GTS 300 Super

Jump straight into dedicated factory specifications and interactive workshop diagnostic engines.

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Subsystem Guide/torques

Fastener Torques

Engine drain plug, axle spindles, caliper mounts, triple clamp pinch bolts & thread lubrication derating guide.

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Subsystem Guide/fluids

Fluids & Capacities

Oil: 1.30 L (1.37 US qt) [1.20 L without filter; 1.40 L dry engine overhaul] • Coolant: 1.15 L (1.21 US qt) total [50/50 mix] • Brake: N/A

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Subsystem Guide/fuses-relays

Fuses & Relays

Main: N/A • Location: N/A

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Subsystem Guide/compression

Compression & Leakdown

Ratio: N/A

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Subsystem Guide/valves

Valve Clearances

Intake: N/A mm • Exhaust: N/A mm

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Subsystem Guide/fuel-delivery

Fuel Delivery & TB Sync

Idle: N/A • Rail Pressure: N/A • Vacuum: N/A

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Subsystem Guide/electrical

Charging & Battery

Battery: YTX12-BS

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Subsystem Guide/suspension

Suspension & Sag

Front Travel: N/A • Rear Travel: N/A

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Subsystem Guide/maintenance

Maintenance Schedule

Oil: N/A • Valves: N/A • Plugs: N/A

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← Return to Full Comprehensive Motorcycle Specification Hub (2012 Vespa GTS 300 / GTS 300 Super)

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2012 Vespa GTS 300 / GTS 300 Super Tire Sizes, Cold PSI & Gearing Ratio | WowShopper Workshop | WowShopper Motorsports