The most commonly used tyre type is solid tyres, sometimes known as solid resilient tyres and pneumatic shaped solids. These are made of solid rubber material so are not inflated/air filled like pneumatic tyres. They are therefore puncture proof and wear very well extending the life of tyre and thus reducing the cost per hour. There are multiple grades available in solid tyres i.e. 2-layer, 3-layer, etc. The inner section of solid tyres is usually a soft compound, which gives some cushioning/suspension (to help with ride quality), with an outer layer on top made of rubber. To fit solid tyres to the forklift a special tyre press is required. There are two different fixing methods for solid tyres, one is Standard Fit and the other one is Easy Fit/Click/Lip.