Ring and pinion gear

Jesserob103

Jesserob103

New Member
I have a 2003 tacoma, it's 4 cyl, and where I live I need bigger knobbier tires, so I was going to change the rims and tires, but I think I need to change the gears in the rear end, it's 4x4 so would I need to in the front also? And how do I check what gears are in it now, and what would be the best gears to put in it, since it's a 4 cyl I figure it will have a hard time pulling these tires, anyone know?! All comments or suggestions are appreciated!
 
The tire size you choose will determine how bad your truck will lag. Contact East Coast Gear Supply for gearing options.

This should be a sticky:


THIS CHART IS FOR '95.5-04 MODELS ONLY!
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
B = 8" ring gear
Next two digits:

01 = 3:42
02 = 3:58
03 = 4:10
04 = 4:56
05 = 3:15
06 = 3:91
07 = 4.30
Last digit:

A = 2 Pinion, Open
B = 4 Pinion, Open
C = 2 Pinion OEM Limited Slip
some '98-00 models have shown a BO code of "???" on the door plate; so far this turns out to be a 3.91 gear ratio, at least for the 5sp. RZN171L-CRPDKAB with factory 31s/265s should be 4.56 with the AT.
 
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