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Old 08-26-2014, 02:34 PM
 
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Quote:
Originally Posted by duster1979 View Post
This doesn't mean much without the width. For instance, the difference in the outside diameter between a 235-70R15 and a 215-75R15 is about a quarter inch.
I forgot to mention that the tires on the guy's Ford truck are 205-70-R15 vs. 205-75-R15 on our Chevy truck. The Chevy car tires, 205-70-R15 are not nearby to take a look at. If we travelled the long distance and they were not rated the same as the truck tires (205-75-R15) we'd be out travel cost but that would be no big deal.
We lose 3% height it seems is the consensus view.
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Old 05-09-2015, 03:23 PM
 
Location: Oceania
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Quote:
Originally Posted by howard555 View Post
We have a good price on a set of 205-70-15. The tires are new.
Last week we went to a shop for a spare. The only used one they had was a 205-60-R15. We sat that tire beside the existing tires and you could really see the smaller height (diameter).

Then yesterday we saw the same truck but it was a 4WD and the tires looked rather large. A closer look and that pickup, same as ours had 31x10.50-15LT.

They looked pretty large for a 15 inch rim. You might think you'd be safer if closer to the ground which would be the case in a 75R15 going down to 70R15.

Whether a 31x10.50-R15LT is like a 225 or 235 R15 not sure.

I found 235 to be closest in height to the 31x9.5 tires I had on a truck.
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