Re: Got some new wheels/tires

From: Matt Beazer (teseract@moparhowto.com)
Date: Sun Jul 26 2009 - 20:13:21 EDT


Interesting... well, considering these are "play tires" (I'd much prefer
some more middle of the road A/T tires but you take what you can get
when you have a wife who is stuck in bed due to a car accident and 2
kids) I'll have to let the list know what I experience when I self-sipe
them. I can see why it would wear faster, though, especially if you do
a lot of hard braking or cornering causing the tread to "Squirm" more.

Do you remember how tightly spaced the sipes were on the tread blocks?
Were they the "zig-zag" sipes or just straight sipes?

And as you're the guy with the tire experience, do you know if a
31x10.5x15 tire (or even a 30x9.5x15) spare will fit with no problems?
Mine has the "Factory full size" spare which won't help my limited slip
rear end at all if I have to use it considering it'll be 2" shorter... :)

Thanks,

MattB

Barry Oliver wrote:
>
> Well, I tried the pro-comps *because* they came siped on the center
> tread blocks. On paper it seems like a tremendous idea, but the
> reality of it is that the tread blocks on a mud tire just don't have
> the lateral support that the tread blocks on a passenger tire have, so
> the only thing they have is their size. Siping allows the rubber to
> flex in smaller pieces, compared to the original and gives you extra
> biting edges, however, the few extra edges you get reduce the tire
> life wholly out of proportion to their effectiveness. As an example,
> if you were to gain 5% traction, at the cost of 40% of your
> treadlife... would you consider it worth it? On a competition machine
> where that 5% is the difference between 1st and first looser,
> absolutely, on a daily driver, not so much.



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