MustangWorks.com : Ford Forums - View Single Post

purple horse · 03-06-2000, 06:23 PM

I have a '78 mustang II with a four cylinder, 3 speed automatic. the tire size is 155/80 R 13. my current gas mileage is about 10 miles per gallon. will bigger tires make my mileage better? Are these tires too small for this car? These are the same size tires as they were when I bought the car. Will a 215/70 R 14 or 185/ 75 R 14 be better or worse?

03-06-2000, 06:23 PM	#1
purple horse Registered Member Join Date: Apr 1999 Location: sterling co. usa Posts: 27	Gas mileage on a '78?!! I have a '78 mustang II with a four cylinder, 3 speed automatic. the tire size is 155/80 R 13. my current gas mileage is about 10 miles per gallon. will bigger tires make my mileage better? Are these tires too small for this car? These are the same size tires as they were when I bought the car. Will a 215/70 R 14 or 185/ 75 R 14 be better or worse?