[SusanMae]

It doesn't look like it has top tether anchors or a retrofit kit. So the answer would be no..you can't top tether a forward facing seat.

Yes--it's ok to install without a top tether. In the US carseats have to pass the crash test with a lap belt only to be certified.

I believe, I've read that someone has gotten the bigger britax seats in a porshe little something or another.

Since there is no tether anchor available and there is no approved retrofit--you're only option is to not be able to top tether in that car.

Susan

	Forward Facing Car Seats A forward-facing car seat is one in which the child sits facing the front of the car. The seat should be installed in the back seat of your vehicle. Most forward-facing only seats are for children above 20 pounds.

	Britax - Click for more info Britax International has been producing reliable child safety products for over 30 years. Not only does Britax have decades of experience creating car seats and other children's safety equipment, Britax has a long standing reputation as an industry leader and innovator. Britax International is headquartered in the United Kingdom, but Britax car seats are designed and manufactured at facilities in Germany, Austria, and the United States. In the summer of 2002, Britax strengthened their commitment to creating the safest car seats with the opening of a brand new, state-of-the-art crash testing facility in North Carolina. Britax car seats have a reputation around the world for being some of the safest, most reliable, and best designed child safety seats ever made.

	Top-Tether A top tether (or top strap) is the supplemental attachment now standard on almost every new carseat in the USA. Top tethers can be used with either the seat belt or with the lower anchors (as part of the LATCH system). In other countries, their use may be required by law. A top-tether is simply a strap that connects the top of the carseat to an anchor mounted in the vehicle at a location behind the carseat, usually the parcel shelf or a point on the floor of the cargo area. It is designed to prevent the forward movement of the top of a forward-facing carseat in a frontal crash. This reduces the head excursion of the child, and can reduce the chances of injury. Almost all current carseats can only meet the tougher new federal safety standards when the tether is used, even though they must still meet the minimum safety standards without a tether.