Tire/wheel question

Later this winter I plan on replacing my 14-inch ralley wheels with 15X7 ralleys. But probably just the rear wheels. I'll leave the fronts on. I am still undecided about tires. Right now I have:

Cooper Cobra tires
Front: 195/70/14
Rear: 215/70/14

What I am leaning towards are

BF Goodrich tires
Front: 225/60/14
Rear: 245/60/15

So my question is will there be any noticable drag in the cars performance since there will be greater rolling mass? The rear tires will be wider and taller than my current setup. I only want to do this due to a more agressive look and stance. But being wider won't they bite better when taking off?

Any input is appreciated. Thanks
Author: admin