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Thread: Tires - C load range 285/75 or 255/85R16s?

  1. #21
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    AZ
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    Mounted 5 255/85-16 Cooper ST Max tires on the OE wheels to replace my 265/75s. Look great, ride great, rub on the UCAs when at lock...grrrr

  2. #22
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    I think SPC UCAs are slightly smaller in diameter near the ball joint, that might be the fix. Hmmm...

    Definitely don't want spacers, nor new wheels.

    Probably smartest to align it with the stock UCAs and see if that helps.
    Last edited by JohnnyS; 12-19-2017 at 05:39 PM.

  3. #23
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    Mar 2012
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    Quote Originally Posted by JohnnyS View Post
    I think SPC UCAs are slightly smaller in diameter near the ball joint, that might be the fix. Hmmm...

    Definitely don't want spacers, nor new wheels.

    Probably smartest to align it with the stock UCAs and see if that helps.
    An alignment won't change the relationship between the tire and UCA - all your adjustment (other than toe) will be made at the frame.

    That said, I've got SPC UCAs on my 4Runner and I did gain like half an inch of clearance from tire to UCA. They're not hard to install other than getting the upper ball joint out.
    2001 4Runner - Toytec BOSS/890s/AT3Ws/empty wallet

  4. #24
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    Jan 2011
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    Quote Originally Posted by JohnnyS View Post
    Mounted 5 255/85-16 Cooper ST Max tires on the OE wheels to replace my 265/75s. Look great, ride great, rub on the UCAs when at lock...grrrr
    Cool to hear, about the ride anyway. I took a coworker for a ride that was last in my truck on BFG'S and he immediately asked what I did to make the ride so much better. He didn't believe it was just the Coopers at the same pressure as the BFG'S were. They really do ride amazing. Hope it lasts.

  5. #25
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    Quote Originally Posted by JohnnyS View Post
    Mounted 5 255/85-16 Cooper ST Max tires on the OE wheels to replace my 265/75s. Look great, ride great, rub on the UCAs when at lock...grrrr
    Excuse the perhaps ignorant question. How can a tire that is narrower than stock rub an a-arm??
    Last edited by bkg; 12-22-2017 at 03:20 PM.

  6. #26
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    Quote Originally Posted by bkg View Post
    Excuse the perhaps ignorant question. How can a tire that is narrower than stock rub an a-arm??
    Excellent question!

    I wasn't very excited when I noticed it...albeit not really surprised.

    It likely boils down to actual tire dimensions, the variances between manufacturers and different tire designs is pretty significant.

    The Cooper's appear to run pretty true to size, that and the Discoverer ST Maxx seem quite "square" where the tread transitions to the sidewall.

    The additional height and aggressive design puts them at the perfect position to barely touch the UCAs at lock.

    Weird. Too bad I don't have a pile of different 255s to test fit for a thread.

    There are a few other projects in front of the Taco but I'll report back when I've found a solution...with pics.

    Cheers!

  7. #27
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    Quote Originally Posted by eatSleepWoof View Post
    Did you have a narrower sidewall before? If so, you've gained a lot more cushion in the extra rubber thickness. And as tires age, the rubber hardens, slowly making the ride worse and worse, which is made worse yet by the ever-decreasing rubber thickness (as it erodes away).
    The tires were 5 years old but only 60% worn. I went narrower and taller. Which helped for sure but it's shocking how bad the BFG'S were even considering they were older.

  8. #28
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    Mar 2012
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    Quote Originally Posted by Ryanmb21 View Post
    Get 265's load range C and you have it all.
    I bought a set of P265/75R16 Falken AT3Ws today. There is such a small difference in size but they ride night and day better. There's a huge difference in acceleration too.
    2001 4Runner - Toytec BOSS/890s/AT3Ws/empty wallet

  9. #29
    Join Date
    Dec 2013
    Location
    Happy valley , Oregon
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    I have the 255/85r16 cooper st Maxx on my sequoia and really like them , super strong sidewalls and so far work fantastic in the snow and ice
    well that didn't go as planned

  10. #30
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    Nov 2006
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    Quote Originally Posted by bkg View Post
    Ordered lift for my wife’s 4Runner. Finding a 285/70-17 in C is tough. May have to but the bullet and go.... SL. 
    SL's are the new C's...


    I run the same brand and tread pattern on our vehicles...mine truck has C's and her SUV has SL's....I can't tell a difference. Max Load specs are fairly similar enough that it is splitting hairs. Don't come anywhere near max payload on either vehicle, so figured they would be fine.

    Have an extra set of 16" rims for the truck so I can run 265/75/16, since 32/11.5/15 C rated tires are getting hard find. Have been wanting to try a set of 235/85/16's, but seemingly impossible to find with less than an E load. Had a set of Cooper ATW's 265/75/16 E's for about a month, but sold them since they rode too rough.
    Last edited by Clutch; 12-31-2017 at 01:37 AM.

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