Gear ratio check
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==Other methods== | ==Other methods== | ||
| − | {{Note1}}The following methods require the drive tire diameter to be known. There are various places online that can estimate the tire diameter from the tire's size | + | {{Note1}}The following methods require the drive tire diameter to be known. There are various places online that can estimate the tire diameter from the tire's size. |
| − | Or, the tire can be measured by running a string around the tire, or marking the sidewall and floor, then move the car ahead one revolution and mark the ground a second time. Then simply measure the distance between the marks for the circumference. A [http://math.about.com/library/blcirclecalculator.htm calculator] can give a quick answer for the diameter. To find the diameter from the circumference long hand, use the formula: '''D equals C divided by Pi''', where '''D''' = diameter, '''C''' = circumference and '''Pi''' = 3.1416. | + | Or, the tire can be measured by running a string around the tire and measuring its length, or marking the sidewall and floor, then move the car ahead one revolution and mark the ground a second time. Then simply measure the distance between the marks for the circumference. A [http://math.about.com/library/blcirclecalculator.htm calculator] can give a quick answer for the diameter. To find the diameter from the circumference long hand, use the formula: '''D equals C divided by Pi''', where '''D''' = diameter, '''C''' = circumference and '''Pi''' = 3.1416. |
A table with some common tire sizes and diameters can be seen below. | A table with some common tire sizes and diameters can be seen below. | ||
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