View Here : Gear Ratio Chart
Simple guide to choosing the best diff gear ratios for your Jeep or 4x4 truck The correct chart for your gear ratio is important for drivability and economy. When you increase the tire size without changing the gear ratio you increase fuel consumption and you can not drive at the low speeds needed for the off roads.
The SRAM/Sachs 3 x 7, 3 x 8, 3 x 9, 3 x 10 and the Sturmey-Archer CS- RF3 and CS-RK3 are the only recent/current production internal-gear hubs designed to use rear sprocket clusters; The Sturmey-Archer-Brompton BWR takes two sprockets, but other models are included in the list for the benefit of tinkerers -- see discussion.. Too high-tech for you?
Our Heavy Duty Transmissions have found great success in areas outside of Rock Crawling from multiple Baja 1000 and SCORE off-road events to many Pro-Am Drift events
The axle code for your rig can be found on the manufacture's sticker located on the driver's side door jamb as follows: First digit: A = 7.5" ring gear
Step 1: Select transmission from the drop down list or, if it's not in the list and you know the gear ratios of your transmission, enter them below.
Use this chart if you're wondering what gear ratio is currently in your Mustang, or looking to change your Mustang's rear gear ratio.
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Gear Ratio & Tire Size Chart. Good "rule of thumb" calculation is to mutiply .12 by your tire diameter. (.12 X 38" = 4.56) (see more formulas at bottom of page)
Use our gear ratio calculator to find the effective gear ratio your vehicle will have with a new tire size. Also calculated is the new gearing you would need in order to return back to your original gear ratio when going to a bigger or smaller tire.
Here's a formula you can use to calculate your vehicle's tire diameter: (CROSS SECTION WIDTH x 0.ASPECT RATIO x 2 ÷ 25.4) + WHEEL DIAMETER = OVERALL TIRE DIAMETER