Tire Pressure 101: Unlocking Grip and Suspension Feel Tire pressure might seem like a small detail, but it’s one of the most critic

By Expert Coach Shane Richardson | Summit Bike Academy

Tire pressure might seem like a small detail, but it’s one of the most critical factors in how your mountain bike performs on the trail. Too high, and you’ll feel like you’re riding a jackhammer. Too low, and your tires will squirm in high-speed corners. Finding the sweet spot can transform your ride, giving you better grip, smoother suspension performance, and more confidence on technical terrain. Let’s dig in.

The Role of Tire Pressure

Tire pressure is more than just a number—it directly affects how your bike interacts with the trail. Here’s a quick breakdown:

• Grip: Lower pressure increases the contact patch (the area of the tire touching the ground), giving you more traction on loose or technical surfaces.

• Suspension Feel: Tires act as the first line of suspension, absorbing small bumps and vibrations. Lower pressure helps smooth out the chatter.

• Rolling Resistance: Higher pressure reduces drag, making it easier to pedal on smooth surfaces.

The challenge is balancing these factors to match your riding style, weight, and trail conditions.

How Tire Pressure Affects Suspension

Your tires work in tandem with your suspension, and dialing in the right pressure can make your bike feel more planted and predictable.

• Too High Pressure: When your tires are overinflated, they can’t absorb small bumps, forcing your suspension to do all the work. This can make your ride feel harsh and reduce traction.

• Too Low Pressure: Underinflated tires absorb too much of the initial impact, leaving your suspension less effective and more prone to bottoming out on bigger hits.

The goal? A balanced setup where your tires and suspension share the workload.

The Danger of Low Tire Pressure

While lower pressure offers better grip and comfort, going too low comes with risks—especially in high-speed turns.

1. Tire Rolling

When your tire pressure is too low, the tire can roll or squirm on the rim during aggressive cornering. This not only affects your control but can also lead to rim damage or burping (air escaping from tubeless tires).

2. Increased Puncture Risk

Low pressure makes your tires more vulnerable to pinch flats (when the tire compresses against the rim) and sidewall cuts.

3. Handling Instability

Underinflated tires can feel sluggish and unpredictable, especially on fast, flowy trails.

Finding the Perfect Pressure

So, how do you get it right? Start by considering:

• Your Weight: Heavier riders generally need higher pressure to prevent tire squirm and rim damage.

• Terrain:

• Rocky, technical trails = Lower pressure for more grip and comfort.

• Smooth, flowy trails = Higher pressure for less rolling resistance.

• Tire Volume: Wider tires can handle lower pressures without compromising performance.

General Guidelines

• Front Tire: Slightly lower pressure for better grip and control.

• Rear Tire: Slightly higher pressure for stability and support.

For most riders, pressures range between 20-30 psi depending on tubeless vs. tube setup, rider weight, and terrain.

Pro Tip: Experiment and Adjust

Dialing in your tire pressure is a personal journey. Start with a middle-of-the-road pressure and adjust in small increments. After each ride, reflect on how your bike handled. Did you feel confident in corners? Did your tires feel harsh or squirmy?

Final Thoughts

Tire pressure isn’t just about comfort—it’s a game-changer for grip, control, and overall ride quality. Get it right, and you’ll feel more connected to the trail and confident on your bike. Want to dive deeper into the science of setup? Join us at Summit Bike Academy for expert coaching and personalized tips to optimize your ride.

Stay tuned for more weekly insights from the team at Summit Bike Academy—your journey to better riding starts here!