yoterdrvr

im trying to figure out what size tire to run....my 35's are a little small for a 5 inch suspension and a 3 inch body, but can my 22-re handle the larger tires. o yeah i also have 5.29 gears. i want to maintain highway speed

signalmtnyota

i ran 37" mt/r's on 4.88s and could ride at 70-75....except for uphills. If i had downshifted (5spd) to 4th maybe, but it was borderline. I'd expect with 5.29s you'd be fine. hope you like riding at 3000+ rpms though, I expect you'll find yourself in that range a lot.

Maybe someone who has 5.29s and not 4.88s will post up with a better answer.

88wildrunner

mine cruizes at 3100 rpm at around 70-75 with 35's and 5.29s. with the extra weight of the 37s i would imagine it would slow the motor down a little bit, but then you might also loose a little speed.

bigarms23

In 4th gear on my854runner with 39s and 529s it cruses at 70 on the freeway so you should be fine with 37s

bigarms23

with the gears you have 37s will allow you to crusie the freeway in 4th gear(up hills) at 75mph so go for it

ovrrdrive

I'm running 5.29 and 36's and my truck has plenty of pep. You'll be fine with a 1" bigger tire. Weight won't be an issue at all either. I bet the 37" tire only weighs a pound or so more than a 36" does...

dropzone

iTrader: (6)

OP was talking about going from a 35" to 37" tire and the tire weight increases by a lot more than a pound per tire. From National Tire and wheel a Toyo open country MT 35x13.50x15 is 84 lbs, a 37x13.5x17 (less rubber from bigger rim) comes in at 93 lbs....9 lbs per tire increased weight

ovrrdrive

I guess I was a little unclear...

I was comparing how my truck accelerates and handles with a 36" tire and 5.29's to what I would guess it would accelerate and handle like with a 37" tire and 5.29's. The ultimate goal of the OP is to find out how his truck will feel with 37's, and I was trying to help him understand that...

And btw, the 37" Irok radial weighs in at 4 pounds less than the 36" does. part of this is because it's narrower than the 36, but the proof is in the pudding. I can only speak for what I have personal experience with.

I guess that from now on, before you correct someone you should at least bother to find out what they're comparing. Especially if they too lazy to post links like I was in my original post...

http://www.intercotire.com/site25.php

tc

Ummm - or you could take some lift out.

IMHO, you need 5.71 for 37's. Your RPM's are going to drop by ~200 or so - if that takes you below 3000 RPM, you just turned your 5 speed into a 4speed.

dirtoyboy

You'll be fine....

just curious what kinda tires you have and what is thier true measurement....

Im surprised no one is taking this into account

yoterdrvr

i got 35 12.50 baja claw radials right now and there about 34 inches tall...

BeaterToyota

x2...

I'm running 36 TSLs with 3" Trail Gear srpings and a Marlin Crawler drop spring hanger & shackles. That's about 4.5" lift max. No body lift, and I could easily fit 37" or 38" tires.

I'm running 5.29 gears with a worn 22RE (190,000+ miles). Fourth gear on hills, 5th the rest of the time.

Sonofmayhem

I had 5.29s and 37mtrs on my 88 sas extra cab, flatbed, And loved them. Had more power than stock.

alpine4x4

If he runs off-road at all and puts strain on his drivetrain 5.71's are a big no-no. Even 5.29's are weak. Run your 5.29's they are stronger than 5.71's, no need to re-gear, and they will drive just fine.

drew303

Thats hearsay.

If you're concerned about gear-breakage get them cryo-treated.


For what its worth I cruise 75mph 3400 rpm 4th gear w/ stock 4.10's on 31x10.5'.

I never use 5th gear as it's worthless. (infact toyota called it a 4spd with overdrive!) With these motors they do far better mpg wise if you run them in the power band with as little pedal input as you can achieve. For MY rig thats 75mph and 4th gear. For example, an hour half road trip one way i used 5th gear and tried to maintain 80mph on fairly flat-level freeway. Used nearly half a tank. On the return trip mainted 70 in 4th and barely touched a qtr tank of used fuel. Wind wasnt a factor.

RPM's arent direct comparison to fuel economy. Just remember that next time you're cruising 5th at 2500rpm with the pedal mashed.

This is just food for thought.

sh0kk86

so then whats the powerband of the 22r/re's?

BeaterToyota

Mine seems to be about 13 hp at about 2700 rpm.

I don't think you're allowed to use "powerband" and "22RE" in the same sentance.

tc

BS - but closer than most get it. Both 5.29 and 5.71 have 7 tooth pinions. So, technically, the 5.29 might be infinitesimally stronger, for all real world truth, they are the same. If you want a significant step up in strength, you have to go to 4.88.

That's BS too. I'm a metallurgist. AT BEST, cryo treating will make up for a bad heat treatment. Realistically, it does little but add cost.

In my experience, you need to keep these motors (both the 22RE and 3VZE) over 3000 to be in the powerband and have a chance of holding the gear into the wind or up any kind of rise.

AxleIke

Its been proven time and time again that 5.71's are no weaker than 5.29's.

That is an internet myth.

Many people running 5.71's and 40" tires with crawlers. They do just fine.

AxleIke

x2.

LOL

The powerband on these trucks is around 2900-3200 RPM's.