i have p225 55 r16 tires on my mustang but i got p225 60 r16 tires on it now they are in the back is that a big dirrerence wil;l it hurt my car or anything
they should be just a little narrower and a tiny bit taller(60 series) it should be an issue at all. your car is rear wheel drive so it doesnt have to have same size tires front and rear just same size on each axel. (55's on front 60's on rear). but you may notice a small handling difference with the taller narrower tires.
the numbers in xxx/yyRzz are: xxx = tread width (in millimeters) yy = [tire height (rim to tread) / tread width] * 100 zz = rim size (in inches) Therefore, your tire tread is 225 millimeters wide, your old tires were 55% of that, or 124 millimeters from edge of rim to tread, and fit a 16 inch wheel. The only difference is that the new tires are 135 millimeters from rim to tread, meaning your car will be travelling 5% faster then your speedometer says (58 MPH instead of 55 MPH)
The difference in the tire sizes is minor and won't screw up anything. You can actually run wildly different size tires as long as they are on the same side of the car (front, back). In drag racing this is extremely common and it happens in other forms of racing. Newer corvettes even come from the factory with wider, taller tires in the rear.
any two tires on any ONE axile SHOULD BE the exact same size and width TO BE AS SAFE AS POSSIBLE... any difference in the two tires on the same axile (two on front or two on back) would throw off the even ride of the axile and COULD damage it... Axiles are expensive and if you happen to be DRIVING when an axile has a problem, it COULD cause a DEATH... just make sure if you have a p225 60 on one side of the axile that the opposite tire is also a p225 60.... you CAN have two different sizes of tires on the car----smaller in front larger in rear axile.
these tires are the " P Metric System" , do not confuse it with the old 50 series and 60 - 70 series tires of yester years . p225 means these tires are 225mm in width. 55 means these tires have a sidewall height that is 55% of the tire width.(in this case 123.75mm) r means radial and 16 is the rim diameter. therefore 225/60R16 are the same width and rim diameter, but the sidewall height is 135mm. So these tires being 11.25mm taller ( less than 1/2 inch ) you shouldn't notice much of a difference in handling at all. If you only have the 60's in the back the rear tires will simply be a tiny bit taller and the same width as the front.
