Posts
- April 12, 2026
Five Things That Break on the Trail (and What You Can Actually Do About Them)
Mountain biking around the Bay Area means dealing with mechanical problems miles from a bike shop. Here’s what goes wrong most often and how to get home.
- April 12, 2026
What Actually Happens When a Mobile Mechanic Comes to You
No waiting rooms, no leaving your bike overnight. Here’s what an on-site repair visit looks like from start to finish.
- April 12, 2026
Why Your Drivetrain Wears Out Faster in San Francisco
The fog, the hills, and the streets all conspire against your chain. Here’s what actually happens and what to do about it.
- April 12, 2026
Your Chain Is the Cheapest Part That Ruins the Most Expensive Ones
A $20 chain, ignored long enough, can destroy $300 worth of cassette and chainrings. Here’s how chain wear actually works and when to replace it.
- April 12, 2026
Your Disc Brakes Are Trying to Kill You (Just Kidding — But Check Them Anyway)
Disc brakes are the best stopping technology on a bicycle. They’re also the easiest to neglect. Here’s what actually wears out, what the warning signs sound like, and when to stop riding until you fix them.
- April 11, 2026
Everything You Need to Know About Flat Tires (and How to Stop Getting Them)
Flat tires are the most common mechanical problem in cycling. Here’s what actually causes them, how to prevent them, and when a flat might be telling you something bigger.
- April 11, 2026
Welcome to Presidio Bikes
We’re a mobile bike repair service covering San Francisco’s west side neighborhoods. Here’s what we’re about.
- April 11, 2026
What Your Rear Derailleur Is Trying to Tell You
Clicking, skipping, sluggish shifts — your derailleur gives you warnings before it fails. Here’s how to read them.