265 vs. 31"?

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265 vs. 31"?

Postby Patdog » Tue Jul 12, 2016 9:52 am

I am in dire need of new tires and I want to make sure I get the right tires before I plunk down a chunk of cash. Right now I have 31x10.5xR15 BFGs, which seem to fit very well. I am on the verge of buying some 265/70R15 General Grabber AT2s. Is there any real difference/advantages between the two and are General Grabbers any good? Also, I am going to want to get new wheels at a later point, am I limited to 15 inch wheels and does the 70/10.5 factor into new wheels?

Any advice is greatly appreciated.
2001 Trooper S 3.5L V6 4WD 200,000 miles
Trans rebuilt at 170K

To Do List: Get TOD working, replace front bearings. Brakes.
Done: Fixed trans hard shifting! (replaced PCS/Force Motor), Repaired ABS! (repaired EHCU),replaced 4 ball joints, IMG and valve cover gaskets, thermostat, plugs, clean EGR tube and valve, timing belt, water pump, fuel filter, replaced AC compressor/dryer. Installed Luis Special HD tie-rods, replaced CV shafts, OME shocks and OME 929 springs :D .
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Re: 265 vs. 31"?

Postby egagnon086 » Tue Jul 12, 2016 12:53 pm

Look at this chart for your answer: https://www.tacomaworld.com/tirecalc?ti ... -265-70r15

The 265/70 is almost a full inch shorter.

You can go to a lot of different size wheels/tires. I'm surprised you have 15's on your '01 trooper. most had 16's from the factory. I've seen troopers with 22's on em before. 15's and 16's will be your cheaper sizes of wheels and tires.

The tire selection is based on what you actually drive, road/off-road.

I have heard good things about the GG AT2, especially those out west. I'm in GA we have a lot of clay and mud and have seen trucks with issues clearing mud out of them. I run Cooper Discoverer At3s. I'm at 80/20 ratio, but when I go offroad its some serious stuff, they have never let me down.
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Re: 265 vs. 31"?

Postby Patdog » Tue Jul 12, 2016 1:06 pm

Thanks for the reply. That's a great chart/site! Since I have 15's on it now, do I have to get 15's or would 16s fit on my wheels? This wheel stuff is all new to me. I really don't want to spend $600+ and have regrets later.
Mostly street/highway driving. When off road, desert, trails, snow, etc.
2001 Trooper S 3.5L V6 4WD 200,000 miles
Trans rebuilt at 170K

To Do List: Get TOD working, replace front bearings. Brakes.
Done: Fixed trans hard shifting! (replaced PCS/Force Motor), Repaired ABS! (repaired EHCU),replaced 4 ball joints, IMG and valve cover gaskets, thermostat, plugs, clean EGR tube and valve, timing belt, water pump, fuel filter, replaced AC compressor/dryer. Installed Luis Special HD tie-rods, replaced CV shafts, OME shocks and OME 929 springs :D .
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Re: 265 vs. 31"?

Postby egagnon086 » Tue Jul 12, 2016 1:44 pm

No you need 15s on 15" wheels, otherwise you will need new wheels. Look at some review on youtube about the Grabbers vs discoverers. I think either would suit your needs.

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Re: 265 vs. 31"?

Postby Toccoa » Tue Jul 12, 2016 10:06 pm

I love my Grabber At2s. Great looking tire and they haven't let me down yet.
2002 Rodeo Amigo Sport
V6 Auto RWD
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1" Wheel Spacers
General Grabber AT2 255/70/16
1" Suspension Lift (coil spacers from Indy4X)

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Re: 265 vs. 31"?

Postby Patdog » Wed Jul 13, 2016 1:29 pm

After further research, looks like I may want to hold off on tires until I get new wheels. I want to put 16" wheels with 265 tires. From what I can find here, looks like I want something with a -6 offset. I have a 2.5 inch lift so, I don't think clearance is an issue. Looks like I need a 6x139.7 bolt pattern. Not sure what the hub bore is. JC Whitney is calling it 100mm but, I thought Isuzus need 108s? Any other factors I should be considering? Looking for black spokes in the $100-125 range.

Based on this chart, I think I am aiming for 265/70/16 (not sure what my options are for the middle number, 70). How I ended up with 15 inch tires, I have no idea. That's how I bought it.


Tires for Isuzu Trooper 2001

Diameters: 16.0'' - 18.0''
Width (mm): 225 - 265
Tire aspect ratio (%): 55 - 75
Smallest tire size: 225/75R16
Largest tire size: 265/60R18

Rims for Isuzu Trooper 2001

Bolt pattern 6x139.7
Diameter: 16.0'' - 18.0'';
Width (inches): 6 - 8;
Offset (mm): 28 - 38.
2001 Trooper S 3.5L V6 4WD 200,000 miles
Trans rebuilt at 170K

To Do List: Get TOD working, replace front bearings. Brakes.
Done: Fixed trans hard shifting! (replaced PCS/Force Motor), Repaired ABS! (repaired EHCU),replaced 4 ball joints, IMG and valve cover gaskets, thermostat, plugs, clean EGR tube and valve, timing belt, water pump, fuel filter, replaced AC compressor/dryer. Installed Luis Special HD tie-rods, replaced CV shafts, OME shocks and OME 929 springs :D .
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Re: 265 vs. 31"?

Postby gwana66 » Wed Jul 13, 2016 2:18 pm

The 70 middle number is the height of the sidewall in mm as a percentage of the width. So a 265/70 will have approx. 185.5mm of sidewall, where a 265/75 will have 199. A 265/75r16 is a little bigger in diameter than a 31 x 10.5r15, and a 265/70r16 will be a little smaller. Manufacturers vary widely in their measurements, so check rolling diameter of whatever you're interested in.

265 (tread width)/70 (sidewall height) r(rim size)16.

Isuzu bore is 108. The bolt pattern is also considered 6 x 5.5. 6 x 139.7 is the metric equivalent. Close enough for hand grenades. Stock offsets varied from -6 to +38, but you'll be hard pressed to find an aftermarket wheel with more than -10. Yours being a 2001, the factory wheels would have been 16x7 with a +38 offset, and 245/70r16 tires. The later years used a wider suspension and the +38 wheels helped keep the tires tucked in under the fenders. Negative numbers make the wheel stick out further. Many aftermarket wheels are -20. Ever seen a pickup truck with the tires sticking halfway out of the fender openings? Wrong offset. Troopers tend to tuck them in too far, in my opinion, so you've got some room to move the wheels out.
98 Amigo, 2.2 5sp 4x4, 4.77 gears and factory LSD.
Power nothing - No power windows, no power locks, no power engine. ;)
Even the hubs are manual now.
2003 Grille and headlight swap

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Re: 265 vs. 31"?

Postby trooper4kids » Wed Jul 13, 2016 2:19 pm

Hi Patdog,

My 93 RS has 235/85R16 Cooper AT3's on later stock Isuzu wheels. My daughter's 94 has 265/75R16 Laufenn Xfit's on later stock Isuzu wheels as well. Both fit fine with no issues on tire rubbing. Both trucks are stock with no suspension mods. The sun/shade mix wasn't great for good pics, sorry. I don't know if the wide track suspension on later rigs changes the clearance available.
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1995 Trooper - first Troop long time ago, sold when 3rd child arrived
1994 Trooper - SOHC, 5 Spd, oldest child's first car
1993 Trooper RS -my DD, DOHC, 5 Spd, bought after driving first kid's rig, realized how much I used to like first Troop!
1998 Trooper - 3.5L oil burner, 5 Spd, 2nd child's car
1999 Trooper - 3.5L needs attention, 5 Spd, 15 YO son's future driver
1993 Trooper RS - DOHC, 5 Spd/blown clutch, significant body damage, not sure whether to modify or strip and crush

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Re: 265 vs. 31"?

Postby egagnon086 » Wed Jul 13, 2016 2:23 pm

Oddly, The wheels on my 98 Amigo had 100mm bores.
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Re: 265 vs. 31"?

Postby gwana66 » Wed Jul 13, 2016 3:08 pm

I've never measured, but all the specs say 108. I've seen 100 and 106.2 advertised as fitting, and I've seen some speculation that the printed specs are wrong. Would be a good idea to measure if you want to be sure.
98 Amigo, 2.2 5sp 4x4, 4.77 gears and factory LSD.
Power nothing - No power windows, no power locks, no power engine. ;)
Even the hubs are manual now.
2003 Grille and headlight swap
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Re: 265 vs. 31"?

Postby Patdog » Fri Jul 22, 2016 1:18 pm

So, I am shopping for wheels and I was hoping to get some feedback on some choices. I currently have 15" wheels and it looks like I may be better off with 16" (not sure if there is any performance differences though). Anyway, are these in the ballpark of what will fit/function on my Trooper?

I am trying to keep it at $100/wheel, give or take.

Helo HE878 Satin Black Wheel (16x9"/6x139.7mm, -12mm offset)


Ultra Wheel 235B Maverick Matte Black Wheel (16x8"/6x5.5mm, +10 mm offset)


Vision 372 Raptor Wheel with Matte Black Finish (16x8"/6x5.5", 0mm offset)


Pro Comp Alloys Series 01 Wheel with Satin Black Finish (16x8"/6x139.7mm, 0mm offset)


And I am pretty much sold on this tire:



General Grabber AT2 Radial Tire - 265/70R16 112S
2001 Trooper S 3.5L V6 4WD 200,000 miles
Trans rebuilt at 170K

To Do List: Get TOD working, replace front bearings. Brakes.
Done: Fixed trans hard shifting! (replaced PCS/Force Motor), Repaired ABS! (repaired EHCU),replaced 4 ball joints, IMG and valve cover gaskets, thermostat, plugs, clean EGR tube and valve, timing belt, water pump, fuel filter, replaced AC compressor/dryer. Installed Luis Special HD tie-rods, replaced CV shafts, OME shocks and OME 929 springs :D .
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Re: 265 vs. 31"?

Postby Patdog » Fri Jul 29, 2016 10:23 am

Just ordered these wheels:

Pro Comp Alloys Series 5001 Wheel with Satin Black Finish (16x8"/6x139.7mm, 0mm offset) $116/each

Hopefully they fit!
2001 Trooper S 3.5L V6 4WD 200,000 miles
Trans rebuilt at 170K

To Do List: Get TOD working, replace front bearings. Brakes.
Done: Fixed trans hard shifting! (replaced PCS/Force Motor), Repaired ABS! (repaired EHCU),replaced 4 ball joints, IMG and valve cover gaskets, thermostat, plugs, clean EGR tube and valve, timing belt, water pump, fuel filter, replaced AC compressor/dryer. Installed Luis Special HD tie-rods, replaced CV shafts, OME shocks and OME 929 springs :D .
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Re: 265 vs. 31"?

Postby Patdog » Wed Aug 17, 2016 10:48 am

tire new 2.JPG


Baby got new shoes! I am really happy with these wheels and tires. The alignment was corrected but, they couldn't quite get it perfect. The kid at Firestone hated his job that day....

Pro Comp Alloys Series 5001 Wheel with Satin Black Finish (16x8"/6x139.7mm, 0mm offset)
General Grabber AT2 Radial Tire - 265/70R16 112S
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2001 Trooper S 3.5L V6 4WD 200,000 miles
Trans rebuilt at 170K

To Do List: Get TOD working, replace front bearings. Brakes.
Done: Fixed trans hard shifting! (replaced PCS/Force Motor), Repaired ABS! (repaired EHCU),replaced 4 ball joints, IMG and valve cover gaskets, thermostat, plugs, clean EGR tube and valve, timing belt, water pump, fuel filter, replaced AC compressor/dryer. Installed Luis Special HD tie-rods, replaced CV shafts, OME shocks and OME 929 springs :D .
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Re: 265 vs. 31"?

Postby gwana66 » Wed Aug 17, 2016 1:02 pm

Looks nice! How do they look from the side? Do they stick out at all?
98 Amigo, 2.2 5sp 4x4, 4.77 gears and factory LSD.
Power nothing - No power windows, no power locks, no power engine. ;)
Even the hubs are manual now.
2003 Grille and headlight swap
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Re: 265 vs. 31"?

Postby Patdog » Thu Aug 18, 2016 10:02 am

tire new 3.JPG
Pretty much flush with the flare. The odd thing is, the left side seems to be sticking out about 1/2-1 inch farther than the right. Not sure if it was like this before I changed my CVs.
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2001 Trooper S 3.5L V6 4WD 200,000 miles
Trans rebuilt at 170K

To Do List: Get TOD working, replace front bearings. Brakes.
Done: Fixed trans hard shifting! (replaced PCS/Force Motor), Repaired ABS! (repaired EHCU),replaced 4 ball joints, IMG and valve cover gaskets, thermostat, plugs, clean EGR tube and valve, timing belt, water pump, fuel filter, replaced AC compressor/dryer. Installed Luis Special HD tie-rods, replaced CV shafts, OME shocks and OME 929 springs :D .
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Re: 265 vs. 31"?

Postby egagnon086 » Thu Aug 18, 2016 11:06 am

Make sure all the wheels have the same offset.
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Re: 265 vs. 31"?

Postby Silver2002Trooper » Sat Oct 08, 2016 6:54 pm

I just got these tires yesterday as Discount Tire for just shy of $800 balanced/installed and the 3 year replacement plan. These Pathfinder AT 265s on my 0 offset rims fit perfectly without any rubbing and create just the right look/stance. I also wanted the AT2s but went with these for about $20 less per tire.
20161008_151050.jpg
20161008_150822.jpg
20161008_150931.jpg

An interesting and important side note, my Trooper's handling on the highway in ruts sucked. It would pull and dart to the sides when lane changing across the ruts. Very annoying and sometimes scary. For a year I tried to track down the source of the issue in the steering and control arms. It got progressively worse but nothing appeared mechanically wrong. I threw about $600 worth of parts and labor at it. Recently I had a hunch when deciding my previous set of tires were at their end. Could it be? The answer was overwhelmingly YES! My worn tires were the problem all along and got worse as they wore. Trooper handles like brand new now! No more white knuckles on the freeway.
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-2002 Trooper S 4x4 3.5L 4L30e 265/70-16 Pathfinder ATs on 16x8 AR Outlaw IIs. Burned about 1 quart of oil/600 miles yet ran great. *Sold to a good Trooper enthusiast 2/12/17
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