Can someone out there tell me what the new corresponding numbers for old tires listed as 670 15 and 800 15 would be thanks Tom
Take that chart with a grain of salt... You'll find that actual tire size can vary by a lot. Those charts will ensure that you get a tire that's the equal or better in terms of load, but diameter/width probably won't match. I usually try to match diameter, then look at width to make sure it'll fit. There can be a fair amount of variation even in 'same' sizes depending on manufacturer or even tire model from the same manufacturer.