What tires vs regearing?

How so tell me that? The tune improves shifting, mpg and power much more.(doesn't matter if you on stock size or larger then stock). Its adaptive to other modifications, driving style and fuel grade.

You clearly have no idea

 

Its not the same, my tacoma was tuned and regeared to 4.88. Re Gearing doesn't improve the odd shifting or poor throttle response. A tune is not a bandaid

 

Absolutely. An LS swapped Disco 2 would be pretty awesome as well.

I'd LS swap my 4Runner too if I had the skill and/or money lol.

LS swap ALL the things!!

 

Even a stock 4runner benefits from a tune, it has nothing to do with the gear ratio. Yes when you add larger tires your gear ratio is "changed". But the op posted about NOT wanting to regear. So I posted what I benefited from with running 285.

From factory they restrict the performance to improve the mpg. This isn't just toyotas its all makes. So that's where you benefit from a tune. Slight changes can make big improvements. Even when it comes to fuel grade your running.

But hey I'm over here running a tune on 285s and my 4r has more pep(then stock) and doesn't struggle going up hills or passing. IT DOESNT NEED to downshifting at every little hill. Which that then improves mpg. Running 93 octane fuel, I get 20mpg average over the last 800 miles with a heavy foot.

Search around on tacomaworld and the Tundra forums. Positive reviews.

 

On another note, now I'm thinking if 34x10.5R17 (tall yet stock width) would fit under stock spare tire location? (Have to look under to see how much extra space i have).

Don't want to ruin the stock look by getting a tire carrier then covering the tire (as its more exposed to the sun vs the running tires, then look for security options.. Too much trouble. Can't keep inside as its a pain to keep in garage when I go shopping.

 

@kmeeg, this is funny.... After all the talk about how I prefer narrow tires, I'm now thinking of picking up a set of 285 KO2's. I found a set of 5 nearly new Rubicon takeoffs on my local Marketplace for 800 bucks... Hard to pass up that good of a deal, haha.

 

$800 is sweet for almost new KO2 Load C 285/70R17. Load C is the sweet spot for me as well. Even the Raptors, Wrangler Rubicon 35s comes KO2 Load C.

Since I have TRD Pro wheels I have to keep in under 275mm ish width so I won't have problems with tire warranty if anything goes wrong. (Since I don't use Load E now I purchase tire warranty.)

 

Yep, load C! I was planning on lifting it soon anyway, so why not?? Haha

Are you sure about the warranty thing? Sooo many people run 285s on the Pro wheels.

I've never had to use a tire warranty in my life, so personally I'd just roll the dice on it.

 

Just trying to be with in spec so tire manufacturer or Discount tire have no excuse. We (atleast me) have to be careful as people don't go into details when they do things. So I try to find details as much as possible. Some times I even find things from valuable members like Thatbassguy which I learn Toyo Opencountry AT3 has 3pmsf rating which DT web site did not specify.

 

Those 34" K02s are only a 33.5" tire, you can do 255/80/17 Ridge Grappler that are 33.3" and get a MUCH better tire that's practically the same size.

 

Here's my reason against it;

1. Not snow rated / No 3pmsf rated (absolute must for me)
   
2. 255/80/17 only come with Load E = poor ride quality
3. 255/80/17 Ridge Grappler same 55lbs - smaller tire yet heavy
   
4. 255/80/17 looks ugly to me personally for a modern body style
5. 255/80/17 been a narrow tire it might wear out faster

so my choice of toyo open country at iii 34 X10.50R17 LT 120S D1 (wish its Load C) , little bigger 33.5 diameter, 55 LBS wins all 5 or first 4 of those points.

 

I have a hard time believing that a tune ever doubled the horsepower on any car. I'd love to see your dyno sheets!

Either way, I think a tune is a good option for some. But, I also agree that a regear is ideal when going with significantly larger tires (34"+).

 

Haha! I know some vehicles can really wake up with a tune.

As far as the speedometer, it reads high with the stock tire size. 285's actually made mine accurate.

Otherwise, it's easy enough to estimate actual speed if you know the difference in actual tire size.

A regear will also require an adjustment to the speedometer in most cases.

 

Ok, I understand now. You comment when you clearly have no fucking idea or even actual actual knowledge of this topic.

And there's multiple threads where you already made your opinion known.

 

There’s a lot more to a tune than just peak horse power gains, calling a tune is a band aid is silly. A pedal commander is a band aid, a (quality) tune is a solution. It’s not a replacement for regearing but it certainly has its place.

 

Correct me if I’m wrong but the difference between 265 and 285 tires is the width of the tire not the height of the tire. That being said why would that change the speedometer reading if the tire is not actually larger in height. I’m relatively new to all this stuff so don’t hesitate to correct me if I’m wrong about something.

Dakka

 

Both width and height are different.

On metric size tires, the second number is the sidewall height as a percentage of the width. So, the sidewall on a 285/70/17 will be taller than that of a 265/70/17. Being 20mm wider, the sidewall will be 70% of 20mm taller (14mm). So, overall, a 285/70/17 will be 28mm taller than a 265/70/17.

Here's a better explanation:

 

gotcha that makes perfect sense. Thanks!

 

Hope not to stir trouble again on this controversial thread, but I did feel a difference the other day on a 4R with 4.56 gears. I run 285's with a bunch of weight and junk we carry all the time in the back, and I'm thinking seriously about re-gearing to 4.56 from stock. I have a supercharger as well, which sometimes I feel it isn't there , but maybe I just got used to the new benchmark, so be that what it is. Anyway, question here is, is this break-in period needed every time you re-gear? I see different opinions out there. Thanks to all!

 

To go from 3.73 (stock) to an effective 3.23, you would need a 36.5" tall tire. Same tire you would need for 4.30 to be equivalent of 3.73's with stock tires.

Also, lower gearing is numerically higher, lower gearing leads to higher engine rpm at a given speed.

 

I got 3rd members from East Coast Gear Supply (great company by the way). They had a 500 mile break-in
https://eastcoastgearsupply.com/ft-1479-new-gear-break-in-procedure.html

I think that is a fairly standard procedure.

 

I would think the break in would be required each time.