Regear needed?

Hello, im new here. I have a 2014 5.7 hemi tundra that i built for overlanding. I have a 6” RC basic lift kit and upgraded to 35x12.5r18. By going up in tire size and weight im carrying when camping, do u recommend that i should regear? What would you recommend? Thanks for your input.

 

Yes without a doubt

 

Going to 5.29 seems to be the popular choice when regearing our trucks.

 

4.88 should put you back to stock ratios on 35s. If you go to 37s you'd need the 5.29 gears.

 

Where do you live? If you drove tons of freeways in flat states for example I would want 4.88s. Mountains give me 5.29 all day

 

I live here in central coast CA. Mostly driving on freeway until i hit the trail.

 

Interesting comment. I switched to 35s over a year ago and have a fully built overland rig carrying pretty heavy constant load. I haven’t felt I needed to regear; maybe it’ll be nice to do but need to do is questionable based on my experience. We’ve been up and down the 395 all year and no issues that I’ve experienced so far. Here’s my rig for weight reference.

 

@rmvcard0303 sweet truck. I ran on 35s for 3 years, yes the truck has power but it is very annoying for the trans to be downshifting constantly to maintain speed

 

Thank you! Not everyone’s setup is the same; thus varying experience. I personally have not experienced the constant downshift that some refer to even with our regular climbs to the mountains. I am sure the issue exists since so many refer to it.

 

Tundra 5.7 is not "hemi"

 

Mine was so annoying I eventually sold the tires and went smaller. The slightest grade would be kicking down 5th to 4th. I was very concerned over time with burning out the trans with so much shifting. I eventually resorted to just driving in S4 around town. I did install a hypertech speedo correction device which did at least fix the shift points.

Our trucks have so many sensitive sensors that i do think people may have different experiences sometimes. Some guys for example see warning lights go off when the front is lifted higher than the rear for example.

forgot to add, i have regeared trucks before with bigger tires, and the difference in driving enjoyment after gears is mindblowing. It is easy to forget how responsive the truck was when stock

 

Do you think the hypertech speedo correction device is necessary with my 33‘s? I am running a bully dog BDX but it doesn’t account for the speedo. Plan to jump to 4.88s someday. I do notice a little more downshifting compared to the stock 32s, just wondering if it could be better with a speedo correction device.

 

When i went 275/70 over stock i notice the street driving shift points were slightly off, but not enough to justify the hypertech imo.

 

Nice set up. Thats what im leaning towards with the front bumper with winch and rear bumper with dual swing out.

 

If a given a choice, absolutely regear.

In your case, what will be apparent is improved acceleration and better fuel economy immediately after regearing. Not to mention, the additional benefits that you may not necessarily see or notice much, such as decreased wear on the trans. If you plan to make additional modifications by adding steel bumpers, a winch, armor, etc., it will be even more beneficial to you.

While you're at it, I highly recommend adding an aftermarket LSD or locker for increased traction.The factory “Electronic LSD” is just traction control, and not incredibly useful.

 

depends on tires weight too. all 35's are not equal.
BFG are on the lighter side vs Toyo are heavier for the same size.

 

Sorry and not trying to be argumentative here but where do you guys come up with this stuff?! Of course after market lockers will always be better than LSD but to state that it’s “not incredibly useful “ is absolutely non sense.

I’m not or intend to be a hard core rock crawler but Toyota’s Auto LSD on my Tundra has served me well. I can give you a list of “Jeep” trails with knee high rock gardens that I’ve gone through and it has NEVER been an issue. I suggest take your rigs out and test its capabilities yourself rather than reading them on here before switching out parts.

 

100% agree. I’ve been through some crazy desert jeep trails and can honestly say I lost traction more often and needed to carry more momentum with an FJ Cruiser I had 10 years ago. It could be I've become a better driver and air down more often but I have complete faith in the Tundra taking me anywhere I would go that it can fit without additional lockers/LSDs. And yes, the FJ had ATRAC and a rear locker.

 

lol it’s funny I am switching from 35s to 37s tomorrow with stock gear ratio. And I saw this post

 

Yes, ATRAC ≠ Auto LSD.

ATRAC on the Tundra comes on automatically in 4Hi and 4Lo with all nannies engaged. Toyota's ATRAC system is incredible in my experience. I haven't done the kinds of crawling in my Tundra that I did in my 4Runner (an SR5 with no lockers), but that thing went anywhere I wanted it to, and ATRAC got me out of many a pickle where I would have been completely stuck without it, spinning my wheels due to my open diffs.

However, @BigAl may have been speaking about the Auto LSD feature on the Tundra. You can engage that by pushing the traction control button in 2wd. When its active, you'll see AUTO LSD on the dash. I agree with him that it's not very impressive compared to a real LSD. Seems to require excessive wheel spin to work.

 

Hello,
I would call Keith Carty of Dirty Deeds Industries and pick his brain. No one knows Tundra's like Keith does. He is out of the office most days, but is always available via phone. You can call or text him anytime at 760-877-4234. He does take many calls and texts a day, but is very good at getting back to everyone.

Thanks, Shawna, DDI