Question about tire size for 14"X 7" Mopar Rallye Wheels

OK, I had a blowout on the Duster last week and the Goodyear Polyglas tires are outta here. Now the problem, I already ordered 2 BFG 245 60 R 14 tires to replace the rear Polyglas which were D6014 tires. Well I got the BFG's today and had them mounted and balanced and put them on the back of the Duster and I hate the look. The tires look so small under the Qtr panels and do not fill up the wheel wells. So my next question is, What size tire can I use on a Stock Mopar Rallye Wheel 14' X 7" ? I will switch the 245's to the front I believe there will be plenty of clearance as the front now has Goodyear Polyglas d7014's and these look taller and wider than the Goodrich tires I just bought. Any assistance in this would be greatly appreciated. The rear leafs are in the stock position and I am just looking for the tallest and widest tire I could mount to these rims. Thanks - maniac