Can i fit 255/85/16 tires? - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 04-23-2011, 12:03 PM Thread Starter
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Location: Philadephia, PA
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Can i fit 255/85/16 tires?

I have the Sonoran Steel System 7.2 Suspension on my 2002 4Runner -
About: 2.5" Front & 3" Rear.
2001-2002 - System 7.2 - $1,294.00 : Sonoran Steel, Sonoran Steel Custom Metal Fabrication L.L.C. Custom Toyota Truck Parts

I currently have on the BFGoodrich All-Terrain T/A KO Tires 265/75R16.

My question is can i go up to the next size BFGoodrich Mud-Terrain T/A KM 255/85/16?

WIll they fit without any rubbing? I live in PA and wheel spacers are illegal. I have attached a few photos with my current tires.

With 255/85/16 tires can i get away without re-gearing?

Some photos of my current tires and the space i have right now -
http://4.bp.blogspot.com/-LwMrytalKi...NER-tires1.JPG
http://1.bp.blogspot.com/-dStLvnf8oU...NER-tires2.JPG
http://2.bp.blogspot.com/-IUYh7ILp7Q...NER-tires3.JPG

Thanks!
- JON

2002 4Runner SR5 Limited / 3.4V6 / 4WD / 4-Speed Automatic / Sonoran Steel System 7.2 Lift Kit / BFGoodrich Mud-Terrain T/A KM2 Tires 255/85/R16 / Stubbs Welding Standard 1.5" Rock Sliders / Deckplate Mod / K&N Air Filter / OEM Bug Deflector / Husky Liners / Thule rack.
Photos & write-ups: http://frohbego.blogspot.com/
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post #2 of (permalink) Old 07-27-2011, 01:20 AM
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i think you will have some rubbing issues with it so i think you will need re-gearing it but that is on my own calculations im no expert on these auto parts. it will be better if you will call your dealer regarding that or some experts in here. oppps sorry for digging this old thread i didn't mean it. peace out.


Last edited by ronierogers; 07-29-2011 at 10:33 AM.
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post #3 of (permalink) Old 08-14-2011, 10:09 AM
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i hope we haven't taken too long to answer your question! Let's look at the metric sizing on your current tires. 265/75R16. 265 is the width in mm. to convert to inches divide by 25 = 10.6", times the aspect ratio (in percent, for sidewall height) 10.6*0.75 = 7.95", you have two sidewalls 7.95*2= 15.9" plus your rim size 15.9+16= 31.9"

...so we find that your existing tires are about 10.6" wide and 31.9" tall

if we go through the same process for 255/85/16 mt's...

255/25= 10.2" width
(255/25*0.85*2)+16"= 32.32" height

Keep in mind that these are approximate sizes and tire mfrs rarely measure to full height, but the mt's should be about 1/2" narrower and 1/2" taller than your existing tires. I don't think you'll have any problem with rubbing or need new axle gears.
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