}
} Not quite. True, the first number is the section width (245), but the
} second number (60) is a ratio of the height to the width or aspect
} ratio.
} 245/60 = 147mm sidewall HEIGHT w/ a 245mm section width
} 245/70 = 171mm sidewall HEIGHT w/ a 245mm section width
}
} So, a 245/70 is taller then a 245/60, not wider.
Yes quite. A 245/70 is taller than a 246/60. The maximum width is the
same at 245mm. The TREAD width will be wider on the /60 tire. From
http://www.dunloptire.com/tires/GT_qualifier.html
Rim Tire Tread Tread
Tire Size Width Diam. Width Depth
P235/60R15 95S 6.5 26.2 7.7 10/32
P245/60R15 100S 7.0 26.6 8.1 10/32
P255/60R15 102S 7.0 27.1 8.5 10/32
P275/60R15 107S 7.5 28.0 8.9 10/32
P235/70R15 102S 6.5 28.0 7.1 10/32
P255/70R15 108S 7.0 29.1 7.8 10/32
So you can see that a 235/60 has a tread width .6" wider than a 235/70
and a 255/60 has a tread width .7" wider than a 255/70. The exact
number will vary bewteen brands and types, but a lower profile tire will
always have a wider TREAD than the same tire in the same width with a
higher profile.
-- Frank Ball 1UR-M frankb@sr.hp.com (707) 794-4168 work Hewlett Packard (707) 794-3038 fax (707) 538-3693 home 1212 Valley House Drive Kawi KDX200, Yamaha XT350 YZF600R Seca 750 Rohnert Park CA 94928-4999 '95 Dakota SLT Club Cab V8 5-Speed 2WD
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