4 Banger Lifts and Tires

I have seen a couple threads like this in here but most get side tracked and stop posting pics..lol...Lets see what kind of lifts and tires you 4 bangers got..i have a 05 2wd access cab with small 215/70/R15 tires...bout to get maybe a 6 inch prcomp lift and some 31 or 32's...want to see what they look like

 

BFG A/T 31/10.5/15's - rubs when I turn full left/right, trying to solve it but nobody knows.

 

and be careful with the 6", you may have to regear

 

Not going to lie i am a noob at this stuff so bear with me cuz i am not sure what all that means..like a rear limited slip..and regear..anyone mind filling me in

 

limited slip differential is a differential locker on the rear axel. Google it for a solid description.

Regear means shanging the gear ratios of your truck to deliver enough power to turn the tires. You need to regear if you lift high or run large tires

 

ok thanks for explaining it..so its probably a good chance i might have to regear with a 6 inch lift

 

I always thought it was a yes, especially with a 4 banger. It is also dependant on the tire size you run but others will correct me if I am wrong

 

ok..ya i am probably just going to go with some 31's...does anybody know of a way for me to able to tell for sure if i have to ..or anybody else in a similar situation as me have to regear???

 

I've bought mine with 30 x 9.5's on it. It seems to do fine most of the time, but 5th gear is kind of sluggish at lower RPM's. If you check out the tire size calculator, you can get an idea of how gear ratio, rpms, and tire size work affect each other.

http://www.tacomaworld.com/forum/tirecalc.php

 

ya see thats what i am worried bout now...cuz i dont know if it can handle a 6 inch and 31's without reagering...does it effect that it is a manual...

 

you have to regear anything above 3 inches

 

2006 2.7, K&N CAI, magnaflow
16" Eagle alloys
Hercules mud 31's
How's it look?

 

That is one sweet ride
What kind of lift do you have?

 

Maybe I'm missing something here, since I have a gen 1 with a 2.7L. Why would a lift require a regear? Maybe because it increases wind resistance? I suppose that would make a difference on the highway.

Your tire size may require lower a lower diff gear (higher ratio), and you may be required to add a lift to fit your tires under the body, but I've never heard of the lift requiring lower gears.

Find out what your diff gear is. Your vin carrires that information and there are guys on this forum who can tell you what gears you have from that. My pickup runs 31X10.50s, which is the largest tire most tire places will mount on it (liability issuses, they tell me). I do just fine. As a matter of fact, I just added 2.5" of lift and intend to go with 33s in the near future. My '00 TRD has a 4.30:1 diff and a manual 5 speed trans behind a 2.7L four-banger. I run 2750 rpm at 65mph on the highway and come in right at 22mpg. My speedo reads about 67 at 65mph by the GPS, so I figure going to 33s will probably correct that as well as bring my rpms down at 65mph. With the 4.30 rear, I should have satisfactory power for my driving, and I have low range for messing in the muck.

Somewhere on this forum there is a good tire size calculator that relates diff gears to tire size and a range of probable satisfactory performance, relative to stock performance. Look around a bit. You'll find it.

 

I didnt know because i have had a few people i might have to regear..you said you have a 2.5 lift...does it matter that i want a 6 inch..and does the fact that yours is a TRD have any effect either..probably doesnt but i am not sure bout this stuff so i am asking all the questions i can before i sink a lot of moeny into this stuff..appreciate the info everyone..

 

Actually the automatic trans supplied trucks have a 3:58 rear gear ratio and the manual trasmission trucks have a 3:31 rear. This allows the auto trucks a bit more mechanical advantage to overcome the big tires or/and lift kit. The auto's torque converter also helps with higher launch rpm.

Motoretro

 

The height of your lift doesn't matter at all regarding gearing. The tire size is what matters. Your tire size can determine the amount of lift you need, though.

Like I said before, you can determine exactly what gear ratio your diffs carry by the vehicle identification number (VIN). There are several gear ratios Toyota puts into their trucks, depending on the year, options package, trans, engine, and customer special orders. My pickup being a TRD gives me an electric locker rear diff, the 4.30:1 gear ratio, and Bilstein shocks (among a couple other things). Before you decide what tires to put on, figure out what your gearing is and then check out the TIRE SIZE CALCULATOR under the "Mods and Tutorials" button at the top of this page. You'll save yourself a lot of headaches if you will do some figuring before you order.

 

thanks bro..thats wat ill do

 

Well said. The tires are what affect the gearing more than anything else. Here's a before and after of mine. 3" Readylift with 31x10.5x15. It's a base model Taco (standard trans, 4 cly, etc.). Yes, you can notice a power loss, but not enough for me to regret doing it. I'd do it again in a heartbeat.

 

Every time I see a truck w/ the Readylift Kit installed the more I want to lift my truck. I like your setup.