Before you rent a car, you need to know the following 15 car rental super tips.

1. When to rent:

Make your reservation as soon as you have decided your plans.

Car rental company employ "yield management", which means their computers can quickly readjust prices according to changes in the supply of cars available. This is the reason that car rental rate can change drastically.

So book early and check often. At big car rental company you can cancel your reservation on-line easily. Have a backup reservation and shop around for better deal is always the best strategy.

Using AAA, AARP, company or government rate to get discount. You can visit Car Rental Travel Super Link for car rental deals.

2. Car Insurance:

Understand the car rental company insurance charge and know in advance whether or not your own car insurance will cover you and your rental car.

The primary way car rental companies increase the cost of the rental is to sell customers additional insurance coverage. There are four different types of insurance and insurance-like coverages.

Supplemental Liability Protection (SLP),
Liability Insurance Supplement (LIS),
Supplemental Liability Insurance (SLI):
The car rental company will supplement the liability insurance above the minimum levels of liability insurance. If you have your personal or corporate automobile insurance policy with coverage above the minimum amounts, it should cover you when you operate a rental vehicle.

Collision Damage Waiver (CDW),
Loss Damage Waiver (LDW),
Physical Damage Waiver (PDW):
A waiver for damage to the vehicle involved in a accident or stolen. Again your own auto insurance plan may cover it. Also many Gold and Platinum cards do offer primary or secondary coverage but it may vary from card to card.

Personal Accident Insurance (PAI):
Provides medical benefits for the renter and passengers of the rental car in an accident. You may already have it under your health, life or automobile insurance policies. Sometimes under state law the car rental company must provide this insurance itself.

Personal Effects Coverage (PEC):
Cover for theft of personal effects of the renter and his or her family. You may already have it through a homeowner's or tenant's policy.

Know what coverage your own auto insurance offers on rental cars and what benefits your credit card have first, then decide you need to buy additional coverage or not.