4.56 gears with 265/75r16

Anybody regeared to 4.56, with 265/75r16 (or similar 32" tire)? Interested in hearing your feedback. Did it feel overgeared on the highway? Yes, I've used the gear calculators, but I'm interested in hearing real world feedback from those that have run these gears with 32" tires

 

Are you manual or automatic?

 

Manual

 

Important question! He's got a base 2.7L 5 speed in his signature, so he's coming from 4.10 gears. I'd say 4.56 would be about right.

My only experience is with the old truck, which had a 5 speed and 22R-E. When I went to 33" tires I regeared to 5.29 and that was really low but nice in the mountains. But top speed was 70 MPH. The right ratio was 4.88 for them, so for a 32" tire 4.56 would be a good choice IMO.

BTW, in the old trucks Toyota used 4.56 with 31" tires and stick shifts in the V6 trucks and 4.88 with automatics and V6, also with 31" tires.

 

Yep, the manuals have a lower fifth gear vs automatics is why I asked, so automatics can get away with lower gears.

I'd say 4.56s would be fine, only about 5% lower than stock gears with stock tires.

Personally, I always go lower than needed though as to me, even stock trucks are geared too high. I'd personally do 4.88s, gears aren't cheap and they'll be more noticeable than 4.56s.

 

I'll put it this way I've got 4.88s in my 4cyl 5spd and I run 35s. It's just about perfect. When I went to 265s years ago it feels like there was little to no difference over the 245 series tires. It wasn't until I added plate bumpers it felt sluggish

 

Hey guys, thanks for the feedback. I also think that first (and reverse) is geared a little high stock. I don't do any hardcore wheeling, but spend a lot of time running on steep rocky forest roads, and my truck keeps getting heavier, with a pretty heavy utility cap w/ toolbox on the back. There have been times when I have really wished for a 2-low option to get up a really steep incline when loaded down. And here in wv, even the highways are steep. I think I will eventually regear, probably to 4.56, down the road. I'd be concerned about Rpms being too high on the interstate with 4.88s, but I'll consider them when the time comes. I may also consider a r156f swap, when their junkyard prices hopefully come down in a couple years. It has a lower 1st and 2nd gear.

 

At the point you're worried about 4:88s being too high at highway speeds, just go with a bigger tire!

I went with 4:56 on a 32" and it was nice but at highway speed the RPMs sat in the power band. Nice for pulling but kills mileage. My experience isnt really comparable though because I'm V6 auto.

If you're a 4 cylinder and driving a lot in the mountains, I'd probably go 4:88 with a 33". Just for the extra pull with weight.

 

I'm building my truck for function and utility, and for my purposes, i think a 33" is overkill. 285 would kill my mileage and I don't want to deal with rubbing. I might consider 4.88 w/ a 255/85 if they were available in anything but an e-load. They're all too heavy. For now, I think a c-load 265/75 has been a good compromise, but even that was a very noticeable change from p-rated 245/75 when at highway speeds, both in power and mpg.

 

My truck (2.7/auto) with 4.88s and 285/75-16s runs about 2800 RPMs at 75-80 MPH on the highway. I think it is just fine. Don't have any idea about MPGs cause I don't care. Love my set-up, but next time, I'll probably get 255/85-16s.

 

That's about where the manual 2.7 runs at 80 with stock gears/tires.

 

4.10s should be fine with a 2nd gen 4cyl manual trans. 265/75r16 are 31.5" tires, and 1 size over stock. You're gonna be over geared highway with 4.56s, and they shouldn't really be needed. For the money it's gonna cost, not worth it IMO.

 

Yes, 4.10s are "fine", and I know how big the tires are, I rounded up. Just like 285s aren't really 33s. There's definitely something lacking when you're working the truck in the hills sometimes though. You may be right about the cost/benefit though.

 

I have 4.56s in my 1st gen on 31s and it's overgeared on the highway. I'm at 3,000rpm at 80mph and my gas mileage took a hit. It would be even worse with the manual trans

 

maybe just do the LCE headers?

 

Already did it. Definitely made a noticeable, but not dramatic, improvement in low end torque. Able to hold a gear better when climbing on the highway. But, just thinking about other improvements that I could make. I think the gearing is a little off for where I live and how I use it

 

What elevation do you live at and do most of your driving? I think that makes a big difference. When I was looking at regearing, a lot of guys said 4.56 with 33's worked well with the 2.7 but they were closer to sea level. I'm at ~5000ft and only go up from there when I go out of town. 4.88 and 33 I felt were barely enough gear up hills on the HWY. IMO, I think that 4.56 will probably be a good set up with 265's but it's just something else to take into consideration.

 

Did you regear before or after you installed your turbo setup? Now that your turbo setup is in do you feel that the 4.88s are overkill?

 

I regeared before. Now with the turbo I would probably be good with 4.56's to lower the RPMs a bit On the hwy and would still have plenty of low end off-road. I've actually considered switching to 456 but I can't justify the cost. Maybe if I find a deal some day...

 

You guys are nuts. The thousands of $ spent regearing fòr a basically stock tire size. Could be well spent on other mods. If you want 2lo do a fj tcase swap and twin stick it. I know a lot of this is all personal preference but I've pushed my truck well over 9000ft with no issues. I was in 4lo the whole time but that's what you get when you buy a 4cyl 4lo is your best friend. With 4.88s and 35s my 4cyl 5spd sits at 2700 rpm at 70 I don't often drive faster than that, and I do the 4-3 dance a lot on the mountain highways here because they are punishing. I would also say the weight difference on a e tire to a c tire is negligible. I've only run e cause I'm a bfg guy and honestly the rocks and roots here shred lesser tires.