33s vs 31s

[schnutzy]

So the original plan was to go with 33 inch BFG all terrains, how ever I have discovered that these may not fit. While the monty was over in china, it suffered a bump to the passenger side front bumper, pushing it in slightly. This has moved it in just enough that it looks like 33s would rub like no other no mater what I did. So the question becomes, do I just go with 31 inch druatracs, or take the front end apart and try to massage it back into place to fit those 33s.

I do not plan on doing any crazy trails, I will admit that the 33s were partly just for looks.

 

[zukrider]

massage. go with 33's!

 

[TwoTrack]

31's, gas isn't getting cheaper.

 

[rxinhed]

Buy the tires that fit the driving you'll expect to do. Trim or restore the front bumper.

 

[schnutzy]

alright yall, as much as i wanted the 33s, ive decided on 31s, after tearing into the front bumper, and taking a look at things, if discovered it is not just bumper damage, but appears to be a little bit of fram dmage as well, and i am not going to mess with that. so tomorrow i will go the toe loacal goodyear dealership and see if they have wat i want in stock, if not, ill be ordering my tires and should have then installed withen a week or so.

 

[Vans-are-freedom]

31's, gas isn't getting cheaper.

I second that notion. I got 33's on my Van and the engine is just screaming when doing 60 on the freeway. I can't imagine how it would be with smaller tires.

 

[off-roader]

I second that notion. I got 33's on my Van and the engine is just screaming when doing 60 on the freeway. I can't imagine how it would be with smaller tires.

Actually, it should be running at a lower rpm not higher rpm.

 

[rxinhed]

I second that notion. -- just screaming when doing 60 on the freeway.

Did you shift out of first or second gear?? :snorkel:

 

[Vans-are-freedom]

Did you shift out of first or second gear?? :snorkel:

Ya that's in 3rd gear. It does not have over drive and it must be 4:56 or 4:88's because it's pretty damn low gearing.

 

[rxinhed]

Still, larger rolling diameter = less engine speed.

Tire diameter times pi = x

63360 / x = number of tire revolutions per mile = y (constant 63360 is number of inches per mile)

y times axle gear ratio = z (at 60 mph)

My 1-ton Dodge with full-time 4wd and 4.88s would rev out the 360V8 at 55 mph (about 3500 rpm) running 235/85-16 tires. Your perceived difference may be the result of some harmonic. ....Oh, and the truck returned 3 mpg (or less), depending on the position of the t-case selector in Hi or Lo.

 

[Vans-are-freedom]

Still, larger rolling diameter = less engine speed.

Tire diameter times pi = x

63360 / x = number of tire revolutions per mile = y (constant 63360 is number of inches per mile)

y times axle gear ratio = z (at 60 mph)

My 1-ton Dodge with full-time 4wd and 4.88s would rev out the 360V8 at 55 mph (about 3500 rpm) running 235/85-16 tires. Your perceived difference may be the result of some harmonic. ....Oh, and the truck returned 3 mpg (or less), depending on the position of the t-case selector in Hi or Lo.

I'm guessing I'm about 3500 rpm too at 55 or 60. It's got a big cam so even though it's wound up it still wants to keep going it would probably creep up to 75 before it felt like the gears were holding it back. It get's about 8 MPG at 55 and then drops off really fast over that.

 

[schnutzy]

they have arrived. install will be either tomorrow or friday depending on when i have time.

 

[schnutzy]

they have arrived. install will be either tomorrow or friday depending on when i have time.

or today cause i got bored.
Before:

After:

 

[shmabs]

wow

quite the difference! congrats!

Mike

 

[5x5]

Nice! What tire are they?