I have some tires 185/65R15 that I wish to use on my 2002 Focus. Obviously they will fit the original 15" rims and there is minimal circumference difference, but there is 10mm width difference. Does this make much difference to load bearing, etc?
By smaller you mean the narrower of the two, correct? Narrower = less friction and theoretically better gas mileage. A smaller diameter tire would increase RPM and increase gas use.If you get alot of snow I would go with the larger size. Otherwise go with the smaller of the two for improved fuel economy.
Yes, I was referring to the narrowness of the tire as the difference between the two sizes he specified are only 5mm different in diameter. So to be more specific: Snow: 195/60R15 No Snow/Better Mileage: 185/65R15By smaller you mean the narrower of the two, correct? Narrower = less friction and theoretically better gas mileage. A smaller diameter tire would increase RPM and increase gas use.