1981 D-150 225 Slant-6 ... which tires?
#11
05-15-2011, 09:28 PM
Anytime I've got new tires I always run 235/75/R15's on all my trucks. The last was a 6cyl 92 Ford that turned them with no problems. They're a relatively inexpensive tire and almost every place that sells tires will likely have a set in stock. (Also I think they look better than the OE rubber bands that most older trucks came with.)
Wolfie is right, the first numbers are the tread width (in mms), the second set the sidewall height (in mms) and the last is the rim size (in inches).
The load rating is a separate letter or letters somewhere on the sidewall. The location varies with the manufacturer so you may have to look for it.
Hope this info helps a little.
Wolfie is right, the first numbers are the tread width (in mms), the second set the sidewall height (in mms) and the last is the rim size (in inches).
The load rating is a separate letter or letters somewhere on the sidewall. The location varies with the manufacturer so you may have to look for it.
Hope this info helps a little.
In this particular instance though the sizes are so close together it does not matter much.
#12
05-16-2011, 12:22 AM
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The second set is the aspect ratio, not the side wall height. The aspect ratio is a ratio of side wall height to tread width. This is why a 285/75/R16 is approximately 33'' tall and a 225/75/R16 is about 29'' tall even though the second number is 75 on both.
In this particular instance though the sizes are so close together it does not matter much.
In this particular instance though the sizes are so close together it does not matter much.
. I typed it before I thought more about it. Thank you for clearing it up for me.