Rad Power Bikes RadExpand 5 Specs, Tire Pressure, & Size Guide
Complete specifications, PSI calculator, and tire size information
The Rad Power Bikes RadExpand 5 features 20x3.3 tires with a recommended pressure range of - PSI. Proper tire inflation is critical for this e-bike's performance, safety, and battery efficiency. At 62 lbs, the bike's weight combined with your body weight and any cargo determines the optimal PSI for your specific riding conditions.
Running the correct tire pressure prevents pinch flats, improves handling, and maximizes your battery range. Too low and you risk damaging your rims on bumps; too high and you'll experience a harsh ride with reduced traction. Use our calculator and reference tables below to find your ideal pressure based on rider weight, terrain type, and cargo load.
Specifications
Quick Reference PSI Table
Quick estimates for pavement with tubed tires. For your exact weight and riding conditions,use the calculator.
| Scenario | Front PSI | Rear PSI |
|---|---|---|
| Light rider, pavement | 17 | 17 |
| Average rider, pavement | 17 | 17 |
| Heavy rider, pavement | 17 | 18 |
| Average rider + 40 lb cargo | 17 | 18 |
| Average rider, mixed terrain | 17 | 17 |
| Average rider, dirt trails | 17 | 17 |
Surface: Pavement (reduce 10-30% for mixed/dirt/snow)
Construction: Tubed (tubeless: -1 PSI, reinforced: +2 PSI)
Get Personalized PSI Recommendations
Calculate exact tire pressure based on your weight, cargo, and riding conditions.
Open Calculator for This BikeFrequently Asked Questions
What is the recommended tire pressure for Rad Power Bikes RadExpand 5?
The recommended tire pressure for Rad Power Bikes RadExpand 5 depends on rider weight, cargo, and terrain. For an average 180 lb rider on pavement with tubed tires (20x3.3), front tire should be around 17 PSI and rear around 17 PSI. Always stay within the tire's undefined-undefined PSI range marked on the sidewall.
What tire size does the Rad Power Bikes RadExpand 5 use?
The Rad Power Bikes RadExpand 5 comes stock with 20x3.3 tires. The sidewall max is undefined PSI and minimum is undefined PSI.
How much does the Rad Power Bikes RadExpand 5 weigh?
The Rad Power Bikes RadExpand 5 weighs approximately 62 lbs. This bike weight is factored into our PSI calculations along with rider weight, cargo, and terrain.
Should I adjust tire pressure for different terrain?
Yes! Lower your tire pressure by 8-15% for mixed terrain and gravel, and up to 30% for soft surfaces like sand or snow. This increases traction and comfort. Use our calculator above to get exact recommendations for your riding conditions.