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Tire size's 31" vs 33" #1063887
09/14/13 05:55 AM
09/14/13 05:55 AM
M
mynion  Offline OP
Getting the Wheeling Fever
Joined: Oct 2012
Posts: 91
SF Ca
I have the stock 31"s on my 94 SR, thinking about 33"s how much difference will I see with the larger size, thinking of some form of mud tires for crawling around in death valley, some really rough roads/trails, and crawling over the really rough stuff, washouts and boulders in the roads, not quite what most would call rock crawling, but crawling over rocks... Suspension is stock as well. I guess what I'm wondering is what it will effect, and how much.


94 montero SR 3.5. 33" BFG TA KO's, OME HD rear springs, front T-bar crank.
93 600 Katana. stage 1 jet kit, Uni foam air filter
02 honda shadow. "for when the woman wants to go with"
97 Acura Integra.
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Re: Tire size's 31" vs 33" [Re: mynion] #1063888
09/14/13 02:44 PM
09/14/13 02:44 PM
RECON45  Offline
Body Damage is Cool
Joined: Jul 2009
Posts: 1,342
Statesville, NC
What width 33s? 10.5 or 12.5?


91 Montero LS "Sandstorm", Auto, Dual Bouncy Seats, 2" Suspension lift, 2" Body Lift, GENII front IFS, 32" MT tires

89 Raider "Trailbreaker", 3.0, Auto, Dual Bouncy Seats
Re: Tire size's 31" vs 33" [Re: RECON45] #1063889
09/14/13 03:04 PM
09/14/13 03:04 PM
Lloyd Swartz  Offline
Web Wheeler
Joined: Jan 2000
Posts: 8,160
Albuquerque NM US
33's are a fairly small tire in todays world of 40" tires. Since even the average off-road tire size is so much larger then yours, 33" tires will give a serious improvement off-road. They will help you get closer to other's ground clearance, protect the vehicle with wider tires, more stability, ect. Negligible effects for highway performance.

Re: Tire size's 31" vs 33" [Re: mynion] #1063890
09/14/13 05:41 PM
09/14/13 05:41 PM
4x4Wire  Offline
Trail Leader
Joined: Feb 2000
Posts: 6,183
Lakeside, CA ***
Check http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=7 for a wealth of information about tires.

On the positive side, more ground clearance and increased Offroad performance. The downside is increased rpm and loss of highway performance.

If you change tire size, consider the rims. A 10.50 and 12.50 tire of the same diameter can result in different overall height on most stock rims. The above link provides a lot of info to consider....

Re: Tire size's 31" vs 33" [Re: Lloyd Swartz] #1063891
09/14/13 06:53 PM
09/14/13 06:53 PM
Grasscat  Offline
Roll Me Over
Joined: Feb 2005
Posts: 2,649
Livermore, Ca ****
Quote
33's are a fairly small tire in todays world of 40" tires. Since even the average off-road tire size is so much larger then yours, 33" tires will give a serious improvement off-road. They will help you get closer to other's ground clearance, protect the vehicle with wider tires, more stability, ect. Negligible effects for highway performance.


Here's another view.

I ran 31's, 32's and 33's on my Gen 2.5 and saw very little difference off road, except the 33's rub and provided lackluster power. 32's were the best fit for that truck.

If you go with the 33's get wider rims, or run 10.5's and a different backset and do a body lift.

The folks who are running the big tires, 35's, 37's etc. have also change their gearing.

Have you been off road with your current tires? How did they perform?

I've never seen a Montero with 40" tires?


Michael j

TreadLightly! Trainer

Grasscat III, 1994 Gen 2 Five speed, Stock ( for a little while )

GrassCat II, 1998 Gen 2.5 Locked and loaded. Ran off with Hector.

GrassCat I, 1991 Gen 1 Ran off with Justice.
Re: Tire size's 31" vs 33" [Re: 4x4Wire] #1063892
09/14/13 08:47 PM
09/14/13 08:47 PM
JohnnyBfromPeoria  Offline
Trail Leader
Joined: Jun 2002
Posts: 6,198
Phoenix, AZ *****
Quote
On the positive side, more ground clearance and increased Offroad performance. The downside is increased rpm and loss of highway performance.


Actually, all things being equal, increasing tire diameter decreases RPM's to achieve the same speed.

John B.

Re: Tire size's 31" vs 33" [Re: Grasscat] #1063893
09/14/13 08:51 PM
09/14/13 08:51 PM
JohnnyBfromPeoria  Offline
Trail Leader
Joined: Jun 2002
Posts: 6,198
Phoenix, AZ *****
Quote
[quote]

The folks who are running the big tires, 35's, 37's etc. have also change their gearing.


You don't really need to change the gearing on a Gen 2 to run 35's. I didn't. It would help, but it's not necessary. One of these days I'll get 4.90's, but I'm good with the 4.625 right now.

And yes, I know the Gen 2.5 messed up everybody's fun with the 4.27 ratio.

John B.


'87 Raider 2.6 Turbo Auto, Under Construction
'95 Montero SR, 35x12.5/15 BFG M/T KM-2's, Rock sliders, Qtr panel chop, gas tank lift, 2" BL, Aisins
'86 SWB, 2" BL, 33" BFG KM-2's, 2.4l KM-148
2012 Chevy Camaro LS V6/M6 IPF S/C
Re: Tire size's 31" vs 33" [Re: Grasscat] #1063894
09/15/13 02:34 AM
09/15/13 02:34 AM
TOASTY  Offline
Trail Leader
Joined: Jan 2002
Posts: 6,122
Mesa AZ, US. *****
Quote
Quote
33's are a fairly small tire in todays world of 40" tires.


I've never seen a Montero with 40" tires


Here you go Grasscat, i tried them out once. The 40" Iroks were actually lighter than my 35's suprisingly

[Linked Image]

[Linked Image]


1999 Montero Blizzard package

2005 Montero Limited

2015 Mirage with antifreeze Sparco wheel package
Re: Tire size's 31" vs 33" [Re: TOASTY] #1063895
09/15/13 03:06 AM
09/15/13 03:06 AM
lordtrunks  Offline
Roll Me Over
Joined: May 2001
Posts: 4,078
Apache Jct, Arizona,USA *****
those 40's do look bad <img src="/forums/images/graemlins/butwiggle.gif" alt="" />


89 2 dr turbo diesel
89/88 "Backwoods sas"
Re: Tire size's 31" vs 33" [Re: TOASTY] #1063896
09/15/13 03:15 AM
09/15/13 03:15 AM
Grasscat  Offline
Roll Me Over
Joined: Feb 2005
Posts: 2,649
Livermore, Ca ****
Quote
Quote
Quote
33's are a fairly small tire in todays world of 40" tires.


I've never seen a Montero with 40" tires


Here you go Grasscat, i tried them out once. The 40" Iroks were actually lighter than my 35's suprisingly



<img src="/forums/images/graemlins/kewl.gif" alt="" />


Michael j

TreadLightly! Trainer

Grasscat III, 1994 Gen 2 Five speed, Stock ( for a little while )

GrassCat II, 1998 Gen 2.5 Locked and loaded. Ran off with Hector.

GrassCat I, 1991 Gen 1 Ran off with Justice.
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