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How to understand metric tire sizes

Discussion in 'Wheels & Tires' started by RelentlessFab, Jan 13, 2009.

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Was this helpful to you?

  1. Yes, I now understand how to convert sizes myself

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  2. Yes, but I probably won't use this knowledge

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  1. Dec 13, 2010 at 5:11 PM
    #41
    RelentlessFab

    RelentlessFab [OP] Tacoma offroad armor fabricating beast Vendor

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    Had tons on the Taco's.... new truck is pretty stock
    Glad to hear this is still getting use. :)
     
  2. Mar 21, 2011 at 11:32 AM
    #42
    VanillaGorilla

    VanillaGorilla Itsnevertoearlytostartbee fingupyourobituary

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    Very helpful, now I understand completely.. On a side note, that is a beautiful name you have there Eric.
     
  3. Apr 3, 2011 at 5:59 AM
    #43
    pdubya88

    pdubya88 Member

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    does anyone kno if 265 70 16's would look ok with a 3 inch lift? i just got the tires the other day brand new
     
  4. May 4, 2011 at 4:29 PM
    #44
    Russell F

    Russell F Well-Known Member

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    That is the same size tire i have on my truck stock. It should look okay but the tires will look a little small unless if they are mud terrain. If it is a mud terrain the tread will make them larger than a radial or all terrain.
     
  5. May 5, 2011 at 3:27 PM
    #45
    pdubya88

    pdubya88 Member

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    i was thinking about getting the dick cepek dc1 rims in 17" but dont kno if i should get 265s:confused:
     
  6. May 5, 2011 at 3:28 PM
    #46
    pdubya88

    pdubya88 Member

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    or 16"
     
  7. May 6, 2011 at 5:14 AM
    #47
    Russell F

    Russell F Well-Known Member

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    That could work fine but you would get a much smoother ride with something a bit wider than a 265. But for the rims, 16 or 17 would look great. Keep in mind that the 17s will be a little more expensive so if you want to save a little more money and still get the same great look go with 16s
     
  8. Jun 25, 2011 at 8:23 PM
    #48
    Jack

    Jack Well-Known Member

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    I'm looking to buy new wheel at Tire Rack and the rims I'm interested in are 17x8 and the rec. tire size is 265/65-17. Will 285/70-17 tires fit on them?
     
  9. Jul 3, 2011 at 8:19 AM
    #49
    Russell F

    Russell F Well-Known Member

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    yepp
     
  10. Jul 19, 2011 at 3:35 AM
    #50
    Fistgar

    Fistgar Off-Road Limo

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    Just did some math for my own self and figured I'd share.

    upgrading from a 265/75/16 to a 285/75/16 will add 0.6 inches of height to your truck! :D
     
  11. Aug 10, 2011 at 1:28 PM
    #51
    97yota4wd

    97yota4wd Well-Known Member

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    so let me get this right... if its a 285 70 17....the first number is the width, second is height, and third is wheel size.
     
  12. Aug 10, 2011 at 5:57 PM
    #52
    DWreck

    DWreck Famous Fabrication Vendor

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    Alright Eric, I got one for you!

    I just looked up revs/mile for the stock tires. I also looked up revs/mile on my new tires (actually, same overall diameter). If I take the revs/mile of old tire divided by revs/mile of new tire, I get a number. If I multiply that number by miles on trip, divided by gallons of fuel, I will have a correct mi/gal?

    Example;
    Old tire: 30.6" od, 680 revs/mi
    New tire: 33.1" od, 628 revs/mi

    680/628=1.0828

    250 miles x 1.0828 = 270.7 miles

    This is based on not calibrating the speedo.
     
  13. Aug 11, 2011 at 7:33 PM
    #53
    RelentlessFab

    RelentlessFab [OP] Tacoma offroad armor fabricating beast Vendor

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    Had tons on the Taco's.... new truck is pretty stock
    Actually, looking at the math of it, you're basically calculating the difference in circumference when you get the 1.0828... So then yes, thats an accurate way to calculate true miles traveled vs read on the odo when you're running the larger tires. Of course thats if the stock ODO reading is 100% accurate to start with with the stock tires, and its not quite accurate from the factory. :cool:
     
  14. Aug 11, 2011 at 8:59 PM
    #54
    DWreck

    DWreck Famous Fabrication Vendor

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    Whaaaa :eek: ? You mean I've probably been getting 42 mpg this whole time? :headbang:
     
  15. Sep 21, 2011 at 5:04 PM
    #55
    Mate

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    Great post, thanks for the info.
     
  16. Oct 15, 2011 at 7:32 PM
    #56
    babytruck

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    Thank you for this thread. It helped a lot. :)
     
  17. Nov 21, 2011 at 11:57 PM
    #57
    lucarno

    lucarno Member

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    i want to buy some bfg ta/ko's for my 2000 tacoma. can i run 32x11.5 on the stock 15 inch rims? my current tires are 31x10.5 r15. or is there some metric size that still gives me about an inch of clearance? thanks. oh yeah, do you think i'd get any rub? i was thinking of getting the billy 5100's all around. or is it more of a question of tire width?
     
  18. Nov 27, 2011 at 10:35 PM
    #58
    TACOconvert2012

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    Thanks that really helps i actually was kinda wondering. SO my stock tire is 265/70/16 if i change to a 265/75/16 on the same rims will i ahve any issues with rubbing??
     
  19. Nov 27, 2011 at 10:36 PM
    #59
    RelentlessFab

    RelentlessFab [OP] Tacoma offroad armor fabricating beast Vendor

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    Had tons on the Taco's.... new truck is pretty stock
    shouldnt have issue, if so it'll be minimal rub on the mudflaps.
     
  20. Nov 27, 2011 at 11:36 PM
    #60
    TACOconvert2012

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    limo tint all windows and tinted tail lights. K&N factory filter replacement. ScanguageII, fog light anytime mod, trailer plug hide-away mod, mud flap delete mod, tirebuddy auto deflators haha not really a mod. Recovery point hitch with shackle. front emblem, tacoma badges and recovery shackle painted red, the V6 badge and little toyota badge have been removed from tailgate and will remain off. CB installed with PA!!! =) for major fun/trouble.. Stealth mode mod to turn DTRL off on command. rear dif breather mod. Pelfrey built rear light bar. weathertech mats front and back in black!! Pelfreybilt skids: IFS, transmission, transfercase and exhaust crossover. ALL painted RED.. ICON 2.5s w/resi's EXTENDED TRAVEL FRONTS, AND 2.5 REARS w/resi's, ICON TUBULAR UCAs, AllPro Standard leaf pack, Total Choas Spindle gussets. 285/75R16 NITTOs. Pelfrey Front bumper, Superwinch Talon 12.5(waiting for install) SUPERCHARGED!!!!!!!
    Thanks Relentless
     
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