What Axle Ratio do I have?

Tryna to figure out what axle ratio I have in my 99 Tacoma.

 

Pretty sure that's 3.58 gears

 

is it worth regearing for 32 inch tires?

 

Probably so. I have a 4.10 rear with 31.5" tires and I'm pretty happy with my truck. But mine's also got the V6. Assuming you have the 4 banger you may need like 4.56 gearing for 32" tires.

I'd suggest using an RPM calculator to determine with 32" tires and x.xx gearing what RPM you might be at at say 65 or 75mph. You'll figure out what gearing would make the truck undrivable at those speeds (because you'd be at like 4k RPM with that little 4 banger screaming) just to maintain highway speeds, and so you'll pick something that keeps that reasonable while regaining some of the acceleration you'll lose from increasing tire size.

 

This doesn't seem bad if 2200 rpms is right at 75 mph.

 

Correct, but it'll take you about 5 minutes to get to 75mph (I'm joking but it'll feel that way). Your truck's acceleration will be very sluggish with a 4-cylinder, bigger tires and a 3.56 gear ratio. Regearing solves that but at the expense of causing higher RPMs at highway speeds (worse fuel economy and annoying to listen to the engine scream for hours on long drives).

 

Confirming 3.583:1.

Jeff

 

As long as the gears Have never been changed!

Trust the Sticker but double Check unless you have owned the Truck from brand new .

I have had a few that the gears were changed then stock size tires were put back on causing the cruising rpm to be rather to high.

Good Luck!