I JUST WANTED TO KNOW HOW MUCH FATTER THE 255 IS THEN THE 235

 

255mm-235mm = 20mm
or 0.7874" if you prefer

 

Not trying to be mean or anything, but I thought you might like to know that when you type in UPPERCASE on these boards and virtually all over the internet, that it's considered to be yelling/shouting. Plus it makes it very hard to read.

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• 2000 F-150 XLT
• 5.4 LITER TRITON V8
• 4X4 OFF ROAD PACKAGE
• SHORT BED EXTENDED CAB
• BRIGHT RED CLEARCOAT
• GRAY INTERIOR
• AUTOMATIC W / MANUAL 4X4 SHIFTER
• 3" PERFORMANCE ACCESSORIES BODY LIFT
• 33X12.50X16.50 BFGOODRICH ALL-TERRIAN KO'S
• AMERICAN RACING BAJA'S 16.50X9.75 RIMS
• FORD SOFT TONNEAU COVER
• BLACK POWDER COATED STERLING EQUIPMENT NERF BARS


[This message has been edited by Nitrox (edited 08-24-2000).]

 

For the example 255/70/17

The first number is the tread width in MM. 25.4CM = 1 in. The second number is the percentage of the fist number, which is the width of the sidewall. The third number of course is your rim size. So the 255 would be 255mm or 10.04 in wide, and the side wall would be 255mm x .70 = 178.5mm or 7.03 in. You can then use these contants and PI (3.14) to theoretically figure out any change in spedo readings when changing rim and tire sizes. For example, if you have 235/70/15 tires and you change to 255/60/16 tires... at 55 your difference would be .2 MPH. I think

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1997 F-150
Ext Cab
4x4 w/offroad pkg
towing pkg
4.6L with Auto Trans

 

Oops... typo, 2.5cm = 1in and 25.4mm = 1in, not 25.4cm = 1in.