opinions on new gears

[jjrgr21]

i'm running 255/85's, w/ tundra lift and ome's in the rear. i do alot of road tripping and pull my M416 trailer along. auto tranny, 3.4 v6.

i was first thinking of 4.88's but was told that may be a bit much for the highway. so do you think 4.56 would do well w/ the tires and trailer. i'd like to not deal with shifting on every hill i encounter.


thanks,
Jason

[BruceTS]

What vehicle and is it a stick or auto? What is the tire diameter? or be more specific about the tires brand/rim size

[jjrgr21]

255/85/16 BFG M/T(33x10) D-cab taco with cap, and armor goodies

auto tranny

[xonetruthcrewx]

4.88's. You will be pulling about 2600rpm at 75mph. Not to bad. You mpg will take a hit though. Do a search also. This topic has been covered many times.

[BruceTS]

4.56 is the better choice, 4.88's would be a bit low and cause your mileage to drop...

[xonetruthcrewx]

I dont think they are too low. Especially offroad. MPG sucks ass though. Oh well.

[jjrgr21]

the thing is, i would like to keep decent mpg's like everyone because i travel alot. i tow a trailer on long trips or camping trips. over the summer i went out west, and got good mpg's w/ the trailer, but on hills it sucked. so now bigger tires (from 30"-33"), and w/ the trailer i have to do something. i've been told that 4.88 will be too low, but i figured i'd check and see what you all have to say

[d0ubledown]

go 4.88's. you'll get better pulling power, and at speed, you'll cruise with the trailer easier and your tranny wont hunt as much. if you had a 5sp, then you could probably get comparable numbers and performance with the 4.56's.

any tires bigger than stock will kill mileage regardless of how youre geared. its just a fact. i ran 33's with my stock 4.30 gears. then 315's with 4.30s. that sucked gas and performance. once i got to 4.88's much better, especially when pulling my tent trailer.

[neliconcept]

if you will be towing, 4.88s, no tow? then 4.56s

[Rock Slide]

I plan to upgrade to 4.56s and 33" tires in a year or so. Then again, I only tow a trailer about twice a year. I'd probably lean to 4.88s if I towed a lot.

[jjrgr21]

i only tow for camping and road trips, maybe a dozen times a year.

[bamachem]

4.88's (this coming from someone who had 4.56's and pulled a few *heavy* trailers)

[JWBehm]

Is it a big difference b/w manual and automatic? I am getting 315's soon (with 2.5" lift :D) and wanted to run 4.88s. . . I have a manual btw

[jjrgr21]

the trailer isn't that heavy, the only place i had a real problem was on 40 in CO on some nasty switchbacks

[jjrgr21]

i'm down to the wire on getting new gears,

what kind of mileage are you all getting w/4.88's and 33's

[4runnerchevy]

x10 4.88

[Wingnut]

I averaged slightly better than 17 on my last trip to Vegas and back.

[jjrgr21]

precision seems to be the one's to get. opinions?

[4runnerchevy]

Just set up a set of precision gears in a friends 85. Went together great, a good set of gears. I run Yukon, and they also set up great. Both are good companies.

[tulsa_sr5]

I don't have a great answer for you, but do consider you are running a narrow 33 which makes a difference on weight and rolling resistance. When I ran 235/85/16 on my 97 I was still able to get about stock mpg (gps to calc) without regearing and never felt much of a power loss. They aren't quite 33", 32+ but I was able to get 22mpg highway easy while still running the stock 4:10 gears. That was with the 4cyl 5spd so apples to oranges for you, but wanted to mention the narrow tire having a pretty large diff in my experience.

[jjrgr21]

it's not bad with the 255's, but it will be towing a trailer. i just need a bit more ass to help with towing

[Wingnut]

oops.