This will be a rare, brief posting for the #1 product for your bike that is often found for free but affects handing, load capacity, rider comfort, safety, and of course traction and tire life: yes it's your good pal pressurized air. Use it wisely, monitor it often and it will save you in time, labour and peace of mind. Get a decent tire gauge and check it against others to ensure it's accuracy. Then check your tire pressures weekly and follow the manufacturers guidelines and adjust to spec for your intended use. You won't be disappointed.
//monkey moto tip 22 - the first 21 were "when in doubt - gas it"