Tires: tires for a 2001 honda crv, honda crv, gas mileage

Question
THE STANDARD SIZE IS 205/70/15
THE CRV IM BUYING HAS ON 215/70/16
WILL THIS BE A PROBLEM ON POWER OR VOID ANY WARRANTIES
WILL IT AFFECT GAS MILEAGE.
THANKS FOR ANY INFO
DON

Answer
Don,

1)  This will cause an error in the speedometer of 4% - the speed reading will be low.

2)  This will efectively reduce the torque available from the engine, but improve fuel economy.

3)  At this point there won't be a warranty on the vehicle from Honda and the dealer might point to the tire size if there are any problems associated with the drivetrain - although it probably won't be the real reason.