Front: 90/90-21 - Rear: 120/90-18

-- Psi

Front Tire Pressure

-- Psi

Rear Tire Pressure

2015 Aprilia RX 125 has original equipment tire size of 90/90-21 for front tires with recommended tire pressure of -- psi, and original equipment tire size of 120/90-18 for rear tires with recommended tire pressure of -- psi.

It is important to maintain normal tire pressure for your 2015 Aprilia RX 125 motorcycle. Low 2015 Aprilia RX 125 motorcycle tire pressure can cause tire underinflation, and high 2015 Aprilia RX 125 motorcycle tire pressure can cause tire overinflation. Check 2015 Aprilia RX 125 motorcycle tire pressure regularly to avoid overinflated and underinflated tires.

Tire inflation value listed on the sidewall of your tire is its maximum tire pressure, and not a recommended 2015 Aprilia RX 125 motorcycle tire pressure. Use correct tire pressure listed on 2015 Aprilia RX 125 motorcycle tire pressure chart found in your motorcycle's manual.

Maintain proper 2015 Aprilia RX 125 motorcycle winter tire pressure by adding air to your tires as needed to the recommended tire pressure value.

If your 2015 Aprilia RX 125 motorcycle is equipped with tire pressure monitoring system (TPMS), keep your eye on low tire pressure warning light being on. Ensure your 2015 Aprilia RX 125 motorcycle tire pressure sensors are working properly to stay alert and enjoy a safe ride.

90/90-21 Tires

Tire Section Width : 90 mm

Tire has a section width or tread width of 90 millimeters or 3.54 inches.

Tire Aspect Ratio : 90

Tire has a profile or sidewall aspect ratio of 90%.

Tire Sidewall Height : 81 mm

Tire has a sidewall height of 81 millimeters or 3.19 inches.

Rim / Wheel Diameter : 21"

Tire was designed to fit rims / wheels that are 21 inches or 533.4 millimeters in diameter.

Tire Type : Metric

Tire uses Metric tire size standard.

120/90-18 Tires

Tire Section Width : 120 mm

Tire has a section width or tread width of 120 millimeters or 4.72 inches.

Tire Aspect Ratio : 90

Tire has a profile or sidewall aspect ratio of 90%.

Tire Sidewall Height : 108 mm

Tire has a sidewall height of 108 millimeters or 4.25 inches.

Rim / Wheel Diameter : 18"

Tire was designed to fit rims / wheels that are 18 inches or 457.2 millimeters in diameter.

Tire Type : Metric

Tire uses Metric tire size standard.

Tire Pressure Tips
  • 2015 Aprilia RX 125 motorcycle recommended tire pressure can be found in motorcycle owner’s manual.
  • Always use tire pressure recommended by the motorcycle manufacturer, not the pressure listed on the tire sidewall.
  • Motorcycle tires can naturally lose on average 1 to 2 psi of pressure a month, so check tire pressure regularly.
  • Check tire pressure when tires are "cold" and have not been driven for at least three hours. Never adjust tire pressure when tires are "hot".
  • Tire pressure changes by about 2.5% for each 10°F difference in temperature. Adjust tire pressure accordingly.
  • Overinflating tires does not increase their load-carrying capacity.

Find Tire Pressure - find recommended tire inflation pressure for your car, light truck, minivan, crossover, SUV, motorcycle, sports bike, dirt bike or scooter.

Shop - buy tires, wheels, tire pressure sensors, tire pressure gauges, tire inflators & air compressors, automotive tools and accessories.

Tire Pressure Forum - tire inflation pressure topics, questions and answers.

Tire Pressure Guide - tire inflation pressure facts, tips and suggestions.

Tire Pressure Charts - tire inflation pressure charts, tire load index chart, tire load range chart, tire speed rating chart, and more.

Tire Pressure Calculators - pressure unit conversion, gas savings calculator, tire pressure temperature calculator, and more.

Car tire pressure, motorcycle tire pressure, correct tire pressure, high tire pressure, low tire pressure, maximum tire pressure, normal tire pressure, optimal tire pressure, overinflated tires, proper tire pressure, recommended tire pressure, summer tire pressure, tire pressure, tire inflation, tire pressure chart, check tire pressure, tire inflation pressure, tire pressure light, tire inflation table, tire psi, psi pressure, bar pressure, underinflated tires, winter tire pressure.