tire?

[Jim Upton]

How much of a difference is a 235/65/18 vs a 255 is there a big differnce between the two sizes, how much? Thanks

 

[EddieS'04]

boo-boo void

 

[Jim Upton]

ok thanks, so there is about a 1/2 inch difference, im looking for some 18 inch tires for the winter but i dont want to mess up my speedo and odometer doing it. going from 255/50-20 to 18s because a much better selection of winter tires. Buying just 18 inch steel rims for the winter, thanks

 

[EddieS'04]

boo-boo void

 

[Jim Upton]

Thank you for the info, i appreciate very much

 

[Les]

The link below will help with size changes.

 

[Jim Upton]

thanks for the link, talked to a tire dealer at lunch and he reccomends going with a 16 inch wheel and 235-70-16 tires, now i can research that theory. thanks to all

 

[EddieS'04]

boo-boo void

 

[Jim Upton]

Not cool, appreciate the heads up, going home tonight to do some research!!!

 

[Jim Upton]

Eddie, i measure from the pavement to the top of my tire and i have 29.25 inches, not sure where you are getting the 25.1 from? thanks

 

[EddieS'04]

Jim,,



Im sorry. I screwed up. forgot one of my multipliers.

Using a calculator your 20's are 30.03". That is by a formula. Manufactor will be different from one brand to another.

Ignore all my other calculations I got in a hurry earlier.



The quik formula is: example 235/65-18



The size(235) x 65% = 152.75mm x 2 = 305.5mm / 25.4 = 12.02" + 18 = 30.027" diameter.



Here is a nifty chart...

[Broken External Image]:

 

[Jim Upton]

No problem eddie, i appreciate all the help,