1. What is the Trek Tire Pressure Calculator?

Definition: This calculator provides recommended tire pressure ranges based on Bontrager/Trek's official guidelines, adjusted for rider weight.

Purpose: Helps cyclists find optimal tire pressure for their specific tire size and weight, improving comfort and performance.

2. How Does the Calculator Work?

The calculator uses Bontrager's pressure recommendations as a base and adjusts for rider weight:

Where:

• \( P \) — Recommended pressure range (psi)
• \( R \) — Base pressure range for selected tire size
• \( W \) — Weight adjustment factor based on rider weight

Explanation: The base pressure range is adjusted up or down based on the rider's weight compared to a standard 75kg reference.

3. Importance of Proper Tire Pressure

Details: Correct tire pressure affects rolling resistance, comfort, puncture protection, and overall ride quality. Too high can be harsh, too low risks pinch flats.

4. Using the Calculator

Tips: Select your tire size from the dropdown and enter your weight in kilograms. The calculator will provide a recommended pressure range.

5. Frequently Asked Questions (FAQ)

Q1: Why does tire size affect pressure?
A: Larger volume tires require less pressure to support the same weight as they have more air volume and contact patch.

Q2: Should I use the minimum or maximum pressure?
A: Start in the middle of the range and adjust based on ride feel - higher for firmness/speed, lower for comfort/traction.

Q3: What about tubeless tires?
A: Tubeless can typically run 10-15% lower pressure than tubed tires for the same size.

Q4: How often should I check my tire pressure?
A: Before every ride, as tires naturally lose air over time.

Q5: Does terrain affect ideal pressure?
A: Yes, consider slightly higher pressure for smooth roads and lower for rough terrain.