Six Bike Fitting Mistakes I See All the Time (and How to Fix Them)

By Andrew Budge, Livefit Australia. Bassendean, Perth WA.

Introduction

Get your position right and the bike more or less disappears underneath you. Get it wrong and you'll know about it, usually as numb hands, a niggling knee, or a saddle that turns the last 20 km of every ride into a negotiation. I've been fitting bikes for three decades, and the same handful of setup errors come through the studio door again and again. Here are the six I see most, with what you can try at home before you book in.

1. Saddle height

This is the big one, and it goes wrong in both directions. Too high and your hips rock across the saddle to reach the bottom of the stroke. That's the side-to-side wobble that loads up your lower back. Too low and your knee never opens up, which tends to show as pain at the front of the knee and legs that tire early.

What to try: The old heel-on-pedal trick still works as a starting point. Sit on the bike, put your heel on the pedal at its lowest point, and your leg should reach almost straight without the knee locking. Move in 3 to 5 mm steps from there and pay attention to how it feels over a few rides, not just in the driveway. If something still isn't right, that's what precise measurement is for.

2. Fore/aft and tilt get ignored

Height gets all the attention, but where the saddle sits front-to-back, and how it's angled, matters just as much. Too far forward throws your weight onto your hands. Too far back and your hamstrings are stretched thin the whole ride. As for tilt, a big nose-down angle feels like relief for about ten minutes, then you spend the rest of the ride quietly sliding forward and pushing yourself back.

What to try: Set the saddle roughly level to start. A phone with a level app on the seat surface is close enough, maybe a degree nose-down if you prefer. For fore/aft, drop a weighted string from the little bump just below your kneecap with the cranks level; it should fall through the pedal axle or a touch behind it. Change one thing at a time. This is fiddly work and it's easy to chase your tail, so don't be shy about getting a second pair of eyes on it.

3. Reach and drop that don't suit you

Straight, locked elbows, shoulders up around your ears, neck craned to see up the road. Nine times out of ten that's too much stem or too much bar drop. Go the other way, though, and a cockpit that's too short or too high leaves you cramped and twitchy on descents.

What to try: You want a soft bend in the elbows and shoulders that stay dropped and loose. A rough test: riding along on the hoods, can you briefly lift your hands a centimetre off the bars without the bike diving forward? If so, your weight's sitting about right. Often a spacer shuffle or a 10 mm stem swap is all it takes, and those are cheap changes that make a real difference.

4. Cleats in the wrong spot

Going clipless is one of the best things you can do for efficiency, but a badly placed cleat quietly wrecks your knees and puts your feet to sleep. The usual culprits are cleats shoved too far forward under the toes, or left and right set at different angles without anyone noticing.

What to try: Get the ball of your foot sitting over the pedal axle, and set the angle to match how your feet naturally point when you stand. Once it feels good, trace around the cleat with a marker so you can put it back in the same place after you swap shoes or replace worn cleats. Stubborn knee pain that won't settle usually needs wedges or shims, and that part's hard to sort by feel at home.

5. Copying someone else's numbers

Your mate's saddle height, or the slammed stem you saw on a pro's bike, tells you almost nothing about what suits you. Leg length, how flexible you are, what you actually ride: it all varies enormously person to person.

What to try: Use the guidelines online as a rough starting point and no more. Keep a note of what you change and how it felt, and back your own feedback over a chart on the internet. If you'd rather have real numbers than trial and error, that's the whole point of a proper fit.

6. Never getting a proper fit at all

Home tweaks get you into the ballpark, and for plenty of riders that's fine for a while. But old injuries, a leg-length difference you don't know about, or a new pair of shoes can undo it all, and those are the things you can't really see yourself.

What a studio fit adds:

• A trained eye catches the small movement patterns and asymmetries you'd never spot in a mirror.

• Hands-on assessment finds the hot spots on the saddle or under your foot before they turn into sores or numbness.

• Years of experience pick up leg-length differences, pelvic tilt and flexibility limits that no online formula accounts for.

Final thoughts

Sorting these out is often the difference between a bike you tolerate and one you can't wait to get back on. If yours still leaves you aching after you've had a fiddle at home, come and see us and we'll go through every contact point properly. We fit road, triathlon and gravel riders across Perth and WA.

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Fits run about two hours at our Bassendean studio and include a 30-day follow-up for free tweaks.

More on the blog:

• Pre-Purchase Bike Fitting: Choosing the Right Bike for Your Body

• Saddle Science & Cycling Performance