The following information is for all users of Flat Tire Defender® Foam Inserts for bicycle mountain bike applications. This includes racers, consumers, dealers, retailers, and mechanics and tire fitters.  Failure to heed may result in accident, injury or death. Please refer to Flat Tire Defender® website for additional information or contact Flat Tire Defender®.

Safety Information


  • It is the operator/rider responsibility to safely operate the bicycle mountain bike when fitted with Foam Inserts.
  • Foam Inserts are designed to assist in carrying the load of the tire’s sidewall in the event of a flat tire. NOT designed to be used as a ‘run flat’ – tire without air.


  • Foam Inserts recommends only specially trained persons should install/remove Foam Inserts.  Improper install/removal can cause damage to the Foam Inserts, tire, rim, wheel and /or cause tire explosion and result in injury.
  • Follow Foam Inserts Installation/Removal instructions provided with the product and shown on Flat Tire Defender® website.

Tire Pressure:

  • Foam Inserts are NOT designed as a ‘run flat’ – tire without air.  It is important that proper tire inflation pressure is maintained before each ride.  
  • Follow tire brand inflation pressure recommendation and refer to Flat Tire Defender® website tire pressure guide or contact Flat Tire Defender®.

Sizing & Tire/Rim Matching:

  • The correct Foam Inserts matching to the tire/rim size is critical for optimum performance, durability and handling. Use of incorrect Foam Inserts, tire, rim and/or wheel assembly can cause tire blow out, tire damage, rim/wheel damage and/or lose of control. 
  • Tires can vary in their inflated dimensions from one manufacture to another, in the same size marking effecting Foam Inserts fit, performance, handling and durability.  
  • Refer to Flat Tire Defender® website fitment guide or contact Flat Tire Defender®. 

Flat Tire:

  • In the event of a flat tire, it is the operator’s responsibility to slow down and use extreme caution until safely stopped. 
  • Be sure to inspect the Foam Inserts, tire, rim and wheel assembly carefully while repairing the flat. 

Life Cycle: 

  • Foam Inserts can be reused when installing new tires. However, overtime the Foam Inserts can soften and their shape can change effecting the load carrying, performance & handling.  It’s important to check the worn Foam Inserts for damage and fit inside the tire, rim & wheel assembly before reinstalling.
  • Foam Inserts recommends dismounting the tire to inspect & clean the tire, Foam Inserts, rim/wheel assembly and change tire sealant every 3 to 4 weeks.
  • Foam Inserts need to be stored properly. Store in a cool – dry place minimizing extreme heat or extreme cold exposure.

Warranty Information

What is Covered:

  • Damage during shipping
  • Material defects

What is Not Covered:

  • Past 30 days of purchase date
  • Damage during installation, in use and/or removal from tire/wheel assembly
  • Not properly cleaned and/or inspected after riding
  • Fitted in wrong size tire, wrong tire/wheel assembly and/or after a flat tire
  • Damaged by fire, chemical breakdown, modifications, negligence, misuse, accidents and/or abused
  • Fees by dealers/retailers/consumers/3rd party services (ex: mounting & dismounting tire and/or tire/wheel assembly)

How to File a Claim & What is Required:

  • Contact Flat Tire Defender® headquarters
  • Customer must be original owner of Foam Inserts
  • Must have original purchase receipt
  • Must return Foam Inserts for inspection before replace is considered (product replacement only, no cash refunds.
  • Return packaging & shipping cost are customers responsibility