05-05-2020, 01:29 PM
Use the shortest that you can, otherwise excessive strain can be put onto and into the tyre carcass. Damage to the shoulder can cause chaffing to the innertube in service. Use tyre soap or washing up liquid (don't get caught in the kitchen) and I have some short, 4" , sections of garden hose , split lenghtwise to slip over the rim where the tyre levers are pivoting to protect the finish.