Tag / Common Name					2.73	3.08	3.27	3.31	3.45	3.55	3.73	4.10	4.56	4.88	5.13	User
Door Code Aerostar 7.5” Open/LS					A f t e r m a r k e t			A f t e r m a r k e t	23		24/B4	22/B2		A f t e r m a r k e t	A f t e r m a r k e t	U s e r
Door Code Aerostar 8.8” Open/LS							25			29/B5/B9
Door Code Explorer 8.8” Open/LS						43	41/D1			45/D5	44/D4/L73	42/D2
Door Code Bronco II 7.5” Open/LS									42/D2		44/D4	47/D7
Door Code Ranger 8.8” Open/LS						92	91			95/R5	96/R6	97/K6/R7	98/R8
Door Code Ranger 7.5” Open/LS						82			84/F4	85/F5	86/F6	87/89*/F7	89*
Ring/Pinion Teeth Count					?30/11?	40/13	36/11	?43/13?	38/11	39/11	41/11	41/10	41/9	39/8	41/8
Exact Ratio (ring / gear)					2.7273	3.0769	3.2727	3.3077	3.4545	3.5455	3.7273	4.1000	4.5556	4.8750	5.1250
Tire OD		mm	in		2.73	3.08	3.27	3.31	3.45	3.55	3.73	4.10	4.56	4.88	5.13	User
		558.8	22
		584.2	23
		609.6	24
		635	25
		660.4	26
		685.8	27
		711.2	28
		736.6	29
		762	30
		787.4	31
		812.8	32
		838.2	33
		863.6	34
		889	35
		914.4	36
		939.8	37
		965.2	38
Metric Tire 1 : P/LT / R
Metric Tire 2 : P/LT / R
User Size (inches) 1
User Size (inches) 2
MPH:					Formula: (MPH * 336.13 * Transmission Ratio * Differential Ratio) / Tire Diameter = RPM											Recalculate
Final (OD) Ratio: