JagerFiend

Just to throw this out there.

I recently installed 5.29 gears and 36x12.5 on my rig and i run about 2200 rpms at 55ish. not to sure about my mpg yet tho

runs-on-4

iTrader: (1)

any idea what kind of gas milage i would get. i get about 13 or 14 now with my 33's

clemson4rnr

What am I doing wrong I have a 1985 22RE 5-Speed with 4.88's and 35x12.5's and im clocking at about 12MPG...

skronzor

I am Running 4.88's with 32's and it seems to work well. It is about perfect for a daily driver/weekend wheeler. 1981 22r 17mpg in town.

yotakeith

i think i might jus put a set of 35's and see what happens. i know ill rarely use 5th around where i live. and 4wd high would be a joke. if its jus terrible ill go with 4.88 gears. im in college gettin my automotive degree. and a fellow 2nd year student rebuilt a set of toyota axles. and i have an extra set so i can talk to him about price range.

thurlo76

im runnin 33x12.5x15's with a 22re, 5 speed with 4.56 gears and just drove 372 miles today going up north and i filled up once in the middle.... i pulled 23mpg the first half and 26 the 2nd half "more flat and down hill for 2nd half"

muddpigg

iTrader: (1)

Interesting, I've been wondering about this combo of OP. Need to find someone to loan me a set of 35"s for a weekend so I can decide if that's the direction I want to go. Will be a year or two before I swap tires though, dang money thing.

yotakeith

i def know that feeling. thats why im goin with 35's instead of 38's. i can fit 38s but ill barely be able to get 35s lol

Guyechka

My 85 is auto with stock 430s and 33" tires. It's a major pain on the highway shifting in and out of overdrive. When I change the gears, I'm going with 529s and sticking with 33" tires. I did have the opportunity to drive a rig with 22r converted to EFI, 529s and 36" tires. I seriously doubt that you could ever get that thing into 5th gear. There was just no power whatsoever. Another rig I got to test out had a 22re that was somewhat tired, 529s and 35" tires. Again, I seriously doubt you could ever get it into 5th gear.

In other words, 488s will work, but you won't have the power and will be down shifting every two minutes.

yotakeith

ill down shift lol that doesnt bother me. i dont mind going slow on the road. but jus locker in low and it should be fine

Black_1985_SR5

iTrader: (1)

i have 5.29's and 36x13.5 iroks and i love how it feels it worked well with my 35's also when i ran the 35's i averaged 17mpg and with the 36's and more weight added i get 16mpg on average
http://www.youtube.com/watch?v=K_4TNTG8l6o

Guyechka

Ok, this is a bit OT, but I have been wondering just how much of a difference steelies versus alloys makes. It's unsprung weight, but it's close to the hub. But with an engine that only produces 105hp? I have stock 16" alloys on my 85, and haven't experimented. Wondering if anyone has switched between the two and noticed a large difference.

Outsane

depends on the weight difference of the rims and where the weight is..

6th Gear

iTrader: (3)

That is one of many variables that can affect MPG but it does make a difference. On the hybrid cars, manufacturers specifically put on lightweight alloys for less rotational mass.

I think tire type, width (aggressive tread vs. on road) would make a bigger difference than wheel weight.

I went from a 15x8 steel wheel 35x12.5, to a 15x7 oem alloy 33x10.5, but I also changed to an all-terain at the same time so the tire probably made more of a difference. I went from 16-17 MPG to 19-20 MPG and that is AFTER calculating for the smaller tire dia. so those #'s are accurate.

Guyechka

What I'd like to do is go from 35s on steel wheels to 37s on alloys while getting the same power and mpgs. But I'm leaning toward thinking that it won't happen. Still, in the rig I'm talking about, I have the 3.4L swap and 529s. You'd think it would push 37s easily. I guess I'll just have to try it for myself.

TMDedtruks

If you crunch the numbers, 4.88s with 33s is the same as stock (28s with 4.10s). 5.29s with 35s also duplicates stock setup. But tire weight, tread pattern, rim weight, vehicle weight (exocage, bumpers, winch), induction type and engine condition all make a big difference in my experience. My carbed 85 PU on steelies and 33/12.50 radial Swamps with 4.88s struggles on hills. Motor has only 35K on it too, but the carb is dying. My buddy's '89 4R has 35/14.50 bias Swamps on steel beadlocks, 4.88s, serious exocage, lots of lift (wind resistance), something like 240K on the clock, but it has EFI! It's OK on the street. Not great, but bearable. So it's a try it and see thing to an extent. GL!

yotakeith

dang. smart!! lol. ive been thinkin of a snorkel.so if the head is facing forward that should somewhat help on the highway as far as restriction goes right?? and im just building my winch bumper for the front. rear is a simple 4 inch pipe bumper.. and no exo. but my flatbed weighs more than the stock bed im sure of it.. maybe i can keep it in the 18 ish range?? its gonna be a dd. so i wanna have the best mpg as possible

Badchicken37

I got a 85 5 speed with 4.10s and 33s and im gettin 15 city, and 18 hwy. 22r was rebuilt last summer.