Gear ratio charts aren't the sexiest thing in the world, nor do they have much to do with gambling. But in a country in a full-fledged recession, you can't deny that making your vehicle as efficient as possible will help you save on small costs even when gas prices are out of control.The typical gear ratio chart is built to show the best gear ratios for everyday driving, fuel efficiency and increased towing power. You sure don't want to gamble with any of those! Making sure you have the proper gear ratios in place can definitely keep you safe as well as save time and money.
Properly calculating the tire diameter and rear axle gear ratio are crucial to determining the proper gear ratio you should have. One formula you can use to calculate tire diameter is:
(CROSS SECTION WIDTH x 0.ASPECT RATIO x 2 ÷ 25.4) + WHEEL DIAMETER = OVERALL TIRE DIAMETER
This is a standard formula that should be spot on when calculating tire diameter. To calculate the rear axle gear ratio, try using this formula:
RING GEAR TOOTH COUNT ÷ PINION GEAR TOOTH COUNT = GEAR RATIO
If you're not a math whiz, then check out the wide variety of gear ratio charts that the web has to offer!





