on your bike.

You do, however have a number of options that can greatly reduce your likelihood of getting a flat. 

Tyre Pressure

Your first strategy should always be to make sure you are riding with the proper tyre pressure.

• Road tyres should run between 100 to 140 psi.
• Mountain bike tyres should run between 30 to 50 psi.
• Urban and casual bike tyres should run between 60 and 80 psi.
• Under-inflation can lead to problems with "pinch flats." This can occur when you hit a bump and your under-inflated tyre compresses all the way to the rim, causing 2 small holes that resemble a snake bite. 
• Over-inflation, on the other hand, doesn't cause flats although it's possible to blow out the tube in extreme cases. 

Use a pump or gauge to check your pressure.

Basic Tyre Care

It's a good idea to periodically inspect your tyres for debris. Debris may not cause an immediate flat but can slowly work its way through a tyre to eventually cause a puncture.

Periodically check your tyre sidewalls and tread for excessive wear, damage, dryness or cracking. If unsure about their condition, ask your bike shop to evaluate your tyres.

Tube Sealants

The concept is simple: Squeeze in a bit of sealant through the valve stem to coat the inside of the tube. In the case of a small puncture or cut, the sealant quickly fills the leak and creates a plug that often outlasts the tube or the tyre around it.

Tyre Liners

A tyre liner is a thin strip of extruded-plastic that fits between the tyre and the tube. This extra layer greatly reduces the chance of puncture flats from thorns, glass or other sharp objects. Liners are popular and work well, but they do add 6 oz. or more to the weight of your tyres which adds noticeably to your rolling resistance in higher performance tyres.