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Diameter of Tire Sizes 7.00-15 and 255/70R15


What is the correct size as the 7.00x15 would it be like the 255 x 70R x 15 or something else


Expert Reply:

The light truck (LT-type) tire size 7.00-15LT has an overall diameter when mounted and inflated of approximately 29.4-inches. The other tire size you referenced, 255/70R15, will have an overall diameter of approximately 29-inches. You can refer to the linked article on tire sizing for more on tire sizes and weight capacities. I also linked another helpful article and video on trailer tires that contain much useful information.

In the tire size 7.00-15 we offer two bias ply tire options, parts # AM10414 and # AM10412. We do not offer any tires in the wider 255 size.

expert reply by:
Adam R

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