I am getting new tires soon and want to go with 35's, but I am worried about towing my enclosed trailer (about 5000lbs loaded) Wondering if the 35's will change my gearing enough that it will feel like I lost too much power. I have the tow package with the 2.92's and have a diablosport tuner, and a CAI on my 5.7. Will the 35's make a big difference or am I over thinking? Thanks in advance

I have stock tires right now (33") with the 20" wheels

 

I know you meant to say 392s because if you have 292s you are in BIG trouble....LOL

But going from 33s to 35s with 392s isnt going to be THAT big of a deal. You might be slightly slower but you and your truck will live

 

I'm not fully in tune with the dimensions of the 1500 yet, but I would urge you to consider clearance issues with 35's. It may require a little lift. Or it may not - I don't know, but I think it's good to check.

As for gearing, consider how it operates now. How many RPMs are you turning on the freeway? How's the acceleration with the trailer? If you're more than happy with the performance pulling the load as it stands now, the 35's might be OK. If it's what you would consider marginal presently, I'd consider gears along with the tires.

 

Dodge specs it's gear ratios based on a stock base level truck, meaning that the gearing is based on a 265/70/17 tire size. This means that your effective gear ratio is actually about 3.74:1 right now.
A change to 35" tires would change your effective gear ratio to approximately 3.52:1.

A swap to 4.10 gears would get you to an effective ratio of 3.69:1 and a change to 4.56 gears would put you at 4.11:1 which is really a great ratio for all around use and towing.

A lot of people think that just by installing 4.56 gears means you have a 4.56 gear ratio, forgetting that tire size directly effects gear ratio. Having 4.56 gears with 31.5" tires is completely different than having 4.56 gears and 35" tires.

I personally think that 4.10 is the ideal gear ratio for a truck that's used as a daily driver but also as a truck. Best ratio of performance and fuel economy and you should strive to purchase the gears that will net you an effective gear ratio closest to that number. For some people that may mean purchasing 4.10 gears and for others it could mean a step up to as much as 4.88 gears...

 

Thanks guys, I did mean 392 not 292...oops....
I would love to do a gear swap, but defenitly don't have the cash for that. I will keep my stock gears and rims. The truck pulls the trailer no problem right now, and I only haul it a few tims a year less than 200 miles away from home, so I am leaning twords the 35's. And yes I have a leveling kit so I should clear 35's. is there any width that would be too much? The trail grapplers come in these sizes:

305-55 (33.39x12.06)
295-65 (35.47x12.13)
35x12.5(35.04x13.39)

I am thinking the 13.39" wide one might be too much to clear. I has probably going to go with the 295-65.

 

if you are keeping your stock 20" rims that are 9" wide then 12.50 wide is the widest tire you can put on any wider and you risk the tire popping off the rim in a pot hole or something similar

 

that is exactly what I was wondering...thanks I will stick with something less than that. I am having a tough time finding a decent AT for under $1000 though. Only one would be the cooper Zeon in the stock size....if you go up to the 305-55 they are just as expensive as the Nittos. Decisions Decisions.....

 

yeah, good luck putting any 35 on a 20" rim for under a 1000

 

Yeah that is kinda what I am finding.....local shop quoted me $1400 for the trail grapps installed out the door, which is pretty good after looking at pricing online, only "cheap" option is the Zeon stock size. Anyone know why the Zeon 305-55 is so much more expensive than the 275-60?

 

You could actually buy a full set of 17" wheels and tires for around what a set of 20" tires would cost you (as long as you didn't get crazy on the wheels). Would get better performance, mpgs and increase your towing capacity. Just wouldn't look as "cool"...