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pengbsam,
cmyx5go was right on: that "V" is a "speed rating" for that specific tire.
Speed rating is essentially a grade given to a tire that says that tire
is rated to "be able to operate at speeds up to and, briefly above" that
rating for "sustained" periods. The orig 1991 law/rule was less expanded,
but you get the idea. The V rating is "good for" 149 mph.
Most of the 18 rubber in X5 sizes, is of the H speed rating, ie 130 mph.
Since your X will never get to 149, even off a cliff, that V rating is academic
vis a vis the "rating". What V rated tires do offer, usually, is greater grip
and often, much faster wear and, less tire life.
If it's for summer use or, you don't plan on seeing snow in Indy this winter, it
may be a good tire/value for you; otoh, it will not serve you well in any snow,
ice or cold weather situ, as compared to a winter tire or even, an H rated std
or "all season" tire..."all season" is a misnomer, imo, as they are
really summer, fall, rain tires as opposed to winter tires.
Hope this helps...I realize the oem Michey, H rated 18" tire is pricey, but
it is a helluva tire.
GL,mD
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