whats the difference between a (more)
05-06-2004, 07:53 PM
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whats the difference between a (more)
225/40/18 tire, a 235/40/18 tire, and a 245/40/18 tire. Check out this wheel, Tire Pkg. for $1200 first one!<ul><li><a href="http://www.wheelmax.com/Wheels/exel/exel.htm">http://www.wheelmax.com/Wheels/exel/exel.htm</a</li></ul>
05-06-2004, 07:55 PM
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the first number 225,235,245 is the width of the tire in millimeters.
the second number is the sidewall percent of the width... 40% of 235 and obviously the last number is the diameter of the wheel.
05-06-2004, 10:29 PM
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10mm and 20mm's in width, plus a smaller profile beginning with the 225 width.
You mainly want a tire width that is appropriate for the wheel width and one that also gives you the proper "Plus1", "Plus2",..etc., with the wheel size increase, so the overall dia. is still equal to or very close to OEM.
05-07-2004, 08:32 AM
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If I understand correctly; because the "40" is a % of the overall tire width....
so as the width becomes larger (wider), that % that represents the tire sidewall (profile) has to change - if just slightly. Thus the overall dia. of the tire will not always be the same between those different tire widths, even though you are still keeping with a XXX/40-18. This is why a certain size tire is usually recommended over the wider or less wide ones. It's best to keep within the "Plus" sizing when moving up from OEM size.
I used/copied this from Tire Rack and edited the #;
<i>The "40" in each case indicates that the tire size's sidewall height (from rim to tread) is 40% of its section width. The measurement is the tire's section height, and also referred to as the tire's series, profile or aspect ratio. The higher the number, the taller the sidewall; the lower the number, the lower the sidewall.</i>
I used/copied this from Tire Rack and edited the #;
<i>The "40" in each case indicates that the tire size's sidewall height (from rim to tread) is 40% of its section width. The measurement is the tire's section height, and also referred to as the tire's series, profile or aspect ratio. The higher the number, the taller the sidewall; the lower the number, the lower the sidewall.</i>
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