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 Tire size
#706891
03/16/06 05:18 AM
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Anonymous
Unregistered
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i am getting new tires for my 91 trooper with the v6. i am considering 31 x 10.5's but would like a wider 32 or 31 x 11.5's. i just need to know if i will burn through a tranny, or my motor too quickly with the 11.5's.
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Re: Tire size
#706892
03/16/06 05:30 AM
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Joined: Mar 2004
Posts: 558
Rock Warrior
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32X11.50's are fine and you don't need alift for them 33's and up is where your power goes bye bye
94 Rodeo 3+3 lift Red)
95.5 Rodeo 1" Body lift Dana 44' front & rear 4.88 gears 35"s 176,000 miles Optima Yellow top InexAir Co2
front winch bumper custom rear bumper, Hella 500's
2004 Silverado duramax
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Re: Tire size
[Re: 94redrodeo]
#706893
03/16/06 12:18 PM
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Joined: Jul 2000
Posts: 417
Mudrunner
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I would agree witht hat mostly, BUT I have just put 33x10.50s on my 88 Troop with the 2.6 and my power did NOT go down at all. The thing to look for is the width of the tire...that seems to really zap the power
My .02,
Chris
1988 Trooper: 2.6L Delta Cam, Pacesetter Header, K&N, 2 1/4 exhaust, CB, Lights by Hella, Warn Hubs, 6.5 inches of lift thanks to DOR and PA, Rancho 9000x's, 33X12.50 Durango MTs
1995 Nissan Maxima...the DD :-)
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Re: Tire size
[Re: TrooperChris]
#706894
03/16/06 03:27 PM
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Joined: Oct 2001
Posts: 4,016
Isuzu Moderator
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The thing to look for is the width of the tire... I can't speak for your experience... but from a physics (or some kind of math <img src="/forums/images/graemlins/notooth.gif" alt="" /> ) standpoint, height should be the bigger factor. Putting on taller tires has the same effect as putting in shallower differential gears... it lowers the RPMs and, as a result, your vehicle is putting out less power at the same speed. Width, tread type, etc will also have an effect in the form of rolling resistance. I know just going from the stock 31x10.50 to a 32x11.50 came with a noticable decrease in power and braking ability.
Sean Strawmyer Back and ready to rock...... crawl. From Indiana or surrounding states and interested in wheelin'? Check out www.mwior.com
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Re: Tire size
[Re: strawmyers]
#706895
03/17/06 06:00 AM
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Joined: Oct 2001
Posts: 945
Rock Warrior
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I have 33x10.50 BFG Mts on my 89RS Trooper. There was minimal loss of acceleration from 31s. I think overall weight of the wheel tire combo can make a bigger difference than height.
Curt B 89RS Calmini Header Delta Cam 33x10.5 BFG MTs & 90 Trooper 3.4 v6, SAS D44 ARB/Hobart 5.38s 35s my pictures
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Re: Tire size
[Re: maxwell417]
#706896
03/17/06 06:08 AM
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Joined: Sep 2002
Posts: 1,873
Body Damage is Cool
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I hope you guys do not fool yourself. When I made a very modest tire size change, from stock 30" to 31", my relatively modern and powerful Rodeo did feel the difference. When I hear people switching to 33 with "minimal loss of acceleration", on older trucks, I wonder how it's possible. I have 33x10.50 BFG Mts on my 89RS Trooper. There was minimal loss of acceleration from 31s. I think overall weight of the wheel tire combo can make a bigger difference than height.
Oleg
Axiom 4WD 2004: OME shocks, 32" BFG Mudders, RockSliderz, OME929+2" spacers, Stinkyfab bent RE rear links, front ARB locker, rear No-Slip locker, DOR front axle lowering kit, custom middle section skid plate, IronMan torsion bars.
Deceased Rodeo'02 4WD.
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Re: Tire size
[Re: holger]
#706897
03/18/06 01:46 AM
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Joined: Aug 2005
Posts: 91
Getting the Wheeling Fever
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When I made a very modest tire size change, from stock 30" to 31", my relatively modern and powerful Rodeo did feel the difference. AGREED!
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Re: Tire size
[Re: MountaineerIsuzu1]
#706898
03/18/06 02:38 AM
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Joined: Oct 2001
Posts: 945
Rock Warrior
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It is all about the gears .... 89RS has 4.77. Trust me it run fine, cruiing 75 mph is no problem.
Curt B 89RS Calmini Header Delta Cam 33x10.5 BFG MTs & 90 Trooper 3.4 v6, SAS D44 ARB/Hobart 5.38s 35s my pictures
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Re: Tire size
#706899
03/18/06 02:50 AM
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Joined: Nov 2005
Posts: 41
Getting the Wheeling Fever
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One thing I think really changes the power is the weight of the tire also. Here is what I found when looking for tires for my Trooper. This is for BFG MT's: 31x10.50 weighs 43lbs 33x10.50 weighs 48lbs 33x12.50 weighs 64lbs Going from a 31 to 33x10.50 is only 5lbs per tire, but to a 33x12.50 is 21lbs per tire. So for 4 33x10.5 it is only 20lbs extra of tire and for a 33x12.5 would be 84lbs extra of tire. That is alot of rotating mass, almost like having a 6wheel 31x10.50 Trooper  . Also, think about this. If you have almost bald 31x10.5's and go with 33x12.5's, I bet that would be over 100lbs different. That would seem to make a big difference. L8r, Kevin
'94 Trooper S 3.2SOHC, 5spd, Aisin hubs, OME919 w/ 2" coil spacers, Edelbrock shocks, fliped BJ's and spacers, 15" snowflakes w/33x12.50x15
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