EVOM1 said:
Which ones? I don't understand yet. I have a 2001 V6 Dbl Cab TRD 4X4(Stock auto Trans and rear diff). I tow my jet boat to the river and I also want to go 4 wheeling. I don't want high RPM's on the freeway. I just bought some street tires, 265 75 16 and plan on going to 285's which are 33's. Since i put on the 265 the tread isn't aggressive so highway milage is ok but its sluggish going through town to work, when I go to the 285 they will be an aggressive offroad tire. With the 265 and towing it seems like the truck is sluggish and I'm always dropping into gears.
Any help would be handy.
Thanks
Ryan
All v6 Tacomas have either 3.91 (5-sp non-TRD) or 4.10 (AT and all TRDs) so, you have 4.10s
for 265/75s you really shouldn't notice much difference but as you state...its there
for 285s (33x11.50s) you will really start to notice the power loss especially towing or on hills.
4.30s will bring you back to a near-stock ratio of 4.04:1 but I'd go with 4.56s (What Toyota should have outfitted the v6 AT trucks with, IMO) and with the taller tires your 'adjusted' ratio will be about 4.28:1 or a little lower than the stock 4.10s with 31" tires. this will give you the extra 'oomph' for towing your boat
(the higher the ratio # the lower the gearing)
as for RPMs...
currently you should be turning about 2130 at 70 mph. (32" tires, 4.10 gears, your actual diameter may be less so rpms may be higher) A BFG AT, 265/75/16 is actually only 31.7" in diameter brand new and other brands will varry greatly.
with 33s (usually around 32.8" in diameter) and 4.56 gears going the same 70 mph, rpms should be around 2290.
your gas mileage will actually be better with the regear and 33s (especially in town) than sticking with the OE 4.10s and that size tire as the engine doesn't have to work as hard to push the truck. If you cruse at 90 all the time mileage will drop...duh
