Forum Discussion
Irelands_child
May 30, 2016Explorer
Aspect ratio and diameters are supposed to be determined by that size figure cast in on the sidewall rubber. In the real world, you need to look at the tire manufacturer's website for the specs for the tire you are interested in using. Also, the Tire Rack website, which I use as my 'font of tire information' and occasional purchase point will have most of the popular brand tires and a few trailer tires listed.
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