I was just looking at a chart about good gearing ratios for different size tires... now... it said 4.56's were best overall performance for 35's. This kind of confuses me... on that chart it leaned toward "better fuel economy" with this combo. I was thinking about going with 35's and was wondering what you guys thought would be a good gearing ratio to switch in.

 

4.56S are more the enough for a vehicle with a big motor, but in a toyota with 35 inch tires,5.29s would work best.
Remember that if you take a engine out of its power range it will cost you gas milage too...

225/70R-15 Tires = 4.10 or 4.30 gears
31 x 10.5-15 Tires = 4.56 or 4.88 gears
32 x 11.5-15 Tires = 4.56 or 4.88 gears
33 x 9.5-15 Tires = 4.88 or 5.29 gears
33 x 12.5-15 Tires = 4.88 or 5.29 gears
35 x 12.5-15 Tires = 5.29 gears

 

i noticed keggo has the 5 spd, i thought the 4.88's were the preferred gears for 35's. usually 5.29's are for the autos when you go 33 and up. ive changed over computers and i cant find all my info for regearing yet, i am going from memory and its not what is used to be!

lee

 

Hmm, Not sure for auto trans, but 5spds can run 33s with 4.56s nicely (for daily, offroad, and highway) so 4.88s would do nicely for 35s. If you went to 529s, you would have high RPMS all the way down the highway. Personally I plan on running 255/85r16 (a true 33) with 4:10s and know they will do fine. I also ran 33x1250s on 410s with the old 22re and only had problems with hills. But that engine wasnt a v6 so it's had problems with hills with 29s and 4.10s

 

Thanks for the help. Originally I was thinking 5.29's since it's a big tire and I thought it would even out the rpm prob. I had just heard since it was a bigger ratio that they were easier to break... I think I heard that The more I think about 35's the more I want 'em! would a 3" susp. lift and a 2" body lift be sufficient for tires that size?

 

This equation works if you are stock and want to regear back to stock power w/bigger tires.

(New Tire diameter/Old tire diameter)*stock gear ratio
I'm pretty sure the diameters have to be in inches.

To find your ratio, look up the code on the plate under your hood.

 

If I had to do it all over again, I'd go with 4.56 gears. With the 3.4L it has more than enough power to pull 35's with 4.88's, but it does hurt fuel ecomony. I see you have the 3.0L, in your case the 4.88's would probably serve you the best.

 

Hmm, on a 91' you may be able to get away with it if you didnt go offroad. The tire height isnt the problem, it's the width. Thats why I plan on getting a play set of tires that are 34x1050r16 with only 2" lift on my tacoma.

 

Cool cool. I'd probably have to get a shop to change em out for me, huh? I'm sure it'd be cheaper if I just unbolted everything myself and took them the third members... am I right in thinking this?

 

Yeah.. but I do go offroading. I'll probably end up getting 15x10's with something like 3.5" backspacing... for the tires I'll go the route of 35x12.5

 

I'm removing the 3rd members and taking them into a shop to install 4.56s, and dual ARBs. Total savings $1200, more than enough for a nice winch.

 

Awesome... I'll have to take them off myself then! thanks for the info! Maybe I can take them to the same shop you are since L.A. is so close to Bakersfield.

 

5.29s with 35s would be most ideal.

it would give an effective ratio of 3.63 if you factored having stock 31s with stock 4.10 gearing originally

in the same instance, if you put 5.29 gears into the vehicle with 31s your effective ratio would be 5.97 as compared to the 35s.....

this is a little bit confusing so let me explain... lets say you have 31s and have 4.10s.... well if you use those same 4.10s with 35s, you will have an effective ratio of 3.63

in the same instance, if you put 5.29 gears into the vehicle with 31s your effective ratio would be 5.97 as compared to the 35s.....

 

I'm taking my 3rd members into 4bydoctor in Burbank.

 

When you go, tell him you referred someone to him. Maybe if and when I go he'll give you a discount on some future work.

 

Will do. Whats your name?

 

My name is Kevin Galloway. We should meet up sometime and go wheelin'.

 

YOu can get away with 2" BL and 3" suspension lift but don't plan on going offroad.

You'll have to crank the t-bar pretty high...unless you use Downey 3" IFS lift kit or Rancho...

I did it just to drive around after I put elocker and 5.29 in the rear while waiting to do SAS. Even with that much t-bar cranked, it still rubs on some bumps in turns.

As far as gear, 5.29 with 35's is better than 4.88. it's a little lower than stock but 4.88 is still too tall for our 3.0 engine. It seems like it'll be best if it's some where in the 5.10 range.

 

I have 5.29's and a 35's but I have a 4 cylinder in my 82. I think 4.88's would have been better for the street however.
If I do goto a 5mge or 6mge supra motor later down the road I am probably going to drop 4.56's into it.

If I had a newer 90-95 runner again I would just score some 4.88's from a automatic out of the junkyard.

my 2cents