If your truck is a street truck and you can afford a little less mileage and less power, id grab the 35's. If your gonna be doing any wheeling, cant afford less mileage at all, 33's would be perfect. 33's look like they fill your wheelwells pretty good anyways.

 

Straight up; Better gas milage with bigger tires and a body lift, its not going to happen EVER. While your rpm will be lower with the bigger tires, you will be using more skinny pedal to get moving and keep moving and that will outweigh the lower rpms. I have ran two different gear ratios in my truck (3.92 & 4.56) and a few different tire sizes as well, the best set up when I had much less motor was 3.92 and 33's for tires.

 

315/75R16's will clear. they are just slightly smaller than a 35x12.50.

a far as drive ratio goes, 4.10 and 315/75's pretty much make your rpm to speed identical to a truck with stock tires and 3.54 ratio.

If I had stock tires I would get way worse mileage with 4.10's...still want 3.54's...topping out at 110mph sucks :P

 

Not doubting you, but I thought 4.56 and 315/75s make your rpm to speed identical to a truck with stock gears and 3.55 ratio? Same with 285/75 and 4.10s?

 

this is a much harder decision then what i had thought. what really sucks is my weird rim size on the truck 16.5. only company who is making tires is bfg at's, which i had on my old dakota.

i still really want to stuff 35s on the rig and btw its a pavement queen.

any last opinions?
get another set of 33s and have no issues
get a bigger set of 35s rub on pinch weld, which will require 2inch body and additional $200ish dollars and possibly regear.

 

nope. these guys just recommend those combo's so your trucks can actually drive with power similar to stock because the v8's just don't have enough torque to turn the bigger tires like they could the stock tires..

so those combos are based on where you will get the best fuel economy and pulling power.

in my case I want 3.54 gears with my 315/75's. turning those tires are nothing for my truck as I can light them up on dry pavement in 4th gear... It would give me more use of my gears in my 6-spd and raise my top speed from 110mph to probably around 130mph... my redline is 3200rpm so I don't have much rpm's to work with so I'm in and out of gears fast. the longer I can stay in those gears, the better...more engine load = more power when you run a turbo, or in my case compound twin turbos as loading the engine makes boost, and the more boost, the more power no matter where you are in the RPM band.

 

ditch the 16.5's and get 16x8 wheels. then throw some 315/75R16's on there and you will do just fine

I only have 2" leveling kit and I don't rub at all...
then again I have a 2500. don't know if the 1500's have the same ground clearance or not?

 

16.5s are military standard wheels. There are tons of tires out there made for those wheels, but you do need to look for them. They are predominant in the offroading aspect. Downside is that they are a pita to reset the bead, however, the OP admits to being a pavement queen so no biggie.

Tires for 16.5s are also comparatively cheaper from what I've seen. Here is an example that is common: http://www.trailworthyfab.com/Goodye...ake-Off-s.html

Don't get too big eyed with those 37s though.... LOL

2500 sits higher than a 1500....common knowledge. Stick to diesel topics Jiga...


My opinion would be that you stick with 33s and bone up on knowledge/money for later changes.

 

what the heck $99 a tire?! sweet rig jiga