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Old 06-26-2020, 10:37 PM   #5
RidingOnRailz
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Re: Converting OLD Biasply to modern measurements

Quote:
Originally Posted by BigD63 View Post
I had found that chart and it has some of the info on it but not all.


When I look at a 6.50R16, how do I get sidewall height, so I can calculate overall tire height?
And for the width, the 6.5, I assumed that was wheel width, or is that tread width, if it is tread that is easy to add out. If it is wheel, then there is a variable as tires can go a little wide or narrow.
6.5" works out to 165mm - which is horrendously narrow for an inflated tire, at least by today's standards. So that 6.5" is probably the rim width.

For tire sidewall height, I would inflate the tire to, maybe, 3-4psi below the max pressure listed on the tire, remember, it doesn't even have to be on a car, just on a rim.

Next, measure from the rim up to the highest point on the tread. That's your sidewall height.
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