2009 Lexus IS 250 gear ratio calculator

With 2009 Lexus IS 250 Gear Ratio Calculator you can see the theoretical top speeds in all gears. You can change tire dimensions to calculate the effect on top speed and gearing. It will help you to find the best gear ratios for your racing car and to understand when it is the best time to change a gear.

Maximum Power RPM:		Revolutions per minute when reaching the top of the power curve.
			Width	Profile	Wheel diameter
Tire Diameter [mm]:		OR
	Numbers of teeth		Gear Ratio
Final Drive Ratio:	x	OR
1st Gear Ratio:	x	OR
2nd Gear Ratio:	x	OR
3rd Gear Ratio:	x	OR
4th Gear Ratio:	x	OR
5th Gear Ratio:	x	OR
6th Gear Ratio:	x	OR
Speed in:
https://cargister.websys.sk/calculator-gear-ratio?rpm=6400&final_ratio_teeths[]=&final_ratio_teeths[]=&fdr=4.1&diameter=634.3&ratio[1]=3.5&ratio[2]=2.0&ratio[3]=1.4&ratio[4]=1.0&ratio[5]=0.7&ratio[6]=0.6&speed_in=kmh&width=225&profile=45&wheel_diameter=17&teeths[1][]=&teeths[2][]=&teeths[1][]=&teeths[2][]=&teeths[1][]=&teeths[2][]=&teeths[1][]=&teeths[2][]=&teeths[1][]=&teeths[2][]=&teeths[1][]=&teeths[2][]=

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Gear shift	Difference after shifting	RPM after shifting
from 1st Gear to 2nd Gear	2743	3657
from 2nd Gear to 3rd Gear	1920	4480
from 3rd Gear to 4th Gear	1829	4571
from 4th Gear to 5th Gear	1920	4480
from 5th Gear to 6th Gear	914	5486

kmh / RPM	1000	2000	3000	4000	5000	6000	6400
1st Gear	8.3	16.7	25	33.3	41.7	50	53.3
2nd Gear	14.6	29.2	43.7	58.3	72.9	87.5	93.3
3rd Gear	20.8	41.7	62.5	83.3	104.1	125	133.3
4th Gear	29.2	58.3	87.5	116.6	145.8	175	186.6
5th Gear	41.7	83.3	125	166.6	208.3	250	266.6
6th Gear	48.6	97.2	145.8	194.4	243	291.6	311.1

This calculator is completely based on mathematical formulas to be useful to you. Try the Transmission Gear Ratio Calculator now.