thanks everyone for the info! I've been thinking about it all day and at this moment i'm leaning towards the toyos. i figure what have i got to lose since a lot of people are saying good things about them and whats a couple extra benjamins? but thats not a set in stone decision. i do like the idea of going to 70 instead of 75. will that still work fine as far as turning radius? are 70's heavier than 75's or the same? or will it rub? i'm guessing it won't rub but just checking. thanks again guys!
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olyelr is right. I think him and I have argued with other people about this before.
In metric tire sizes the (eg. LT285/75R16) the LT stands for light truck, 285 is the WIDTH, in millimeters, of the mounted and inflated tire, sidewall to sidewall. the 75 is the "aspect ratio", it is the height of the sidewall in a percentage to the width of the tire. in this case, the sidewall is 75% of 285mm tall, 213.75mm.
if you were to get a 70 instead, then the tire would be shorter by 5%, but have no effect on the width.
Helms is correct. The first number is the metric measurement (mm) in width of the tire. All the next number is, whether its 70, 75, or whatever, is the percentage of the width that the tire height is. 70% of 285 would be 199.5 mm tall. 75% would be 213.75 mm tall.
Therefore, 70 is no wider than 75. It might give off that appearance, because its a not as tall, but its actually no wider.
i used to have a set of the bfgs 285 70 17 and i loved them, beat the hell out of them and rode for about a year with a roofing nail in each front tire and the only reason i took them off is because they were on the wear bars. the last time i went to oklahoma a bull got out and i was in my truck coaxing him back to his pasture and every time i went from one side of the road to the other i bet i popped 5 or 6 bottles and didn't have a mark on the tires.
heres a good site that all of ya'll ought to check out.
To the OP, I would suggest going to a tire place and tell the guy to pull down the tire size you want to run. Tell him to pull one 75 and one 70 and you make the decision based upon what your eye balls tell you. Don't worry about what anyone else says. I made my decision and have never regretted it. As to your question about rubbing, you will have no trouble at all.
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