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Discussion Starter #1
I want to put 60's on the back of my bird. What is a comparable size to the 215/15's so that i don't throw off my speedo? Thanks
 

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Discussion Starter #3
Thanks for the link bud. Goin by their comparison, 265 would be almost identical in height and within .03%.
 

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Buck,

On what rim?? I've been told you can't stuff a 265/50/16 on a T-bird sport rim(7" wide). So do you have custom (IE Wider) rims? Because you can't put anything that wide on stock 15" rims.
 

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Discussion Starter #6
Buck,

On what rim?? I've been told you can't stuff a 265/50/16 on a T-bird sport rim(7" wide). So do you have custom (IE Wider) rims? Because you can't put anything that wide on stock 15" rims.

Stock fanblade rims, but i'm talkin 60 series, not 50??
 

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Buckcreek, do you understand that "60 series" has NOTHING to do with the width of your tires?
 

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Discussion Starter #9
Buckcreek, do you understand that "60 series" has NOTHING to do with the width of your tires?
???????????? 70's are wider than 75's, 60's are wider than 70's, 50's are wider than 60's. Explain please:confused:
 

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The middle number "50", "60", whatever it is, is only a ratio. The sidewall height in relation to the width of the tire (which is indicated by the "235", "245", "255" etc.).. the larger the number the wider the tire.. I think that the first set of numbers is the tread width in MM(? correct me if I'm wrong anyone), the second set is the sidewall height in relation to the width, the third is the wheel size.

A 245/60/15 has a width of 245 mm, the sidewall height is 60% of that, and it fits on a 15" wheel.
 

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Yup Yup...what Traveler said. The widest accepted tires you can put on the stock 15" wheels are 245/60-15. :D
 

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Discussion Starter #12
Now i'm totally confused. According to the tire conversion sites listed above, to keep the same height and not throw off the stance of car or the speedo, the closest match is a 265 to keep my height the same? I don't want to change the fronts, almost new, so what's the solution?
 

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That may be true, however a 265 (265 MM) is too wide to fit on the narrow stock 15" Wheel. A 245 (245 MM) just fits. and by the way.... Looks very good on there.. (had them before I got my 16" Sport wheels)
 

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the 70 in 215/70R15 is the hight of the sidewall compaird to the tread width(215). so if you want a wider tire you need to look at the first number for the width. Then to keep it the same hight you will need to look at the second number.

A good rule is for every width change bigger or smaller you will need to do the oppasite to the number for hight. same goes with rim size. So one size up from a 215/70R15 would be 225/65R15 and so on.
 
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