[DeTomaso] (no subject)

Sat May 19 19:56:12 EDT 2007

Correction: The width in mm (305 in this case) is not the tread width, it's the overall tire width when mounted.

http://www.kellytires.com/auto/tire_school/terminology.html

Tomas

----- Original Message ----- 
From: "Mark McWhinney" <msm at portata.com>
To: "'SEL'" <edlebby at yahoo.com>; <detomaso at realbig.com>
Sent: den 19 maj 2007 20:08
Subject: Re: [DeTomaso] (no subject)

> Hi Stephen,
> 
> The tires sizes are confusing.  There are several ways of expressing tire
> sizes that have changed over time.  Some use metric units, some English, and
> some use a mixture.  
> 
> The one we commonly use has a mixture.  It has tread width in millimeters, a
> unit-less aspect ration, and a inner diameter (wheel diameter) in inches.
> "305/50-15" has tread that is 305 mm wide.  With 25.4 mm per inch, that
> works out to 12".  The aspect ration is 50 (or .50 to be more accurate), so
> the sidewall height is 6" (12" x .5).  With an inner diameter of 15" plus a
> top and bottom sidewall, the total height of the tire is 27" (6+15+6).  As
> with clothing, various brands of tires can run a little large or a little
> small verses the reported sizes.
> 
> The Hoosier tires that you are looking at express their sizes as tire height
> in inches, tread width in inches, aspect ratio, and inner diameter in
> inches.  "27x10.50R-15" is 27" high and 10" wide for a 15" wheel.  It is the
> same height as the 305/50-15 but is 2" narrower.  You want to have a tread
> width a little wider than the wheel, so the Hoosier recommends that tire for
> 7-9" wide wheels.  You could probably get away with it on your 10" wide
> wheels, though.  They don't have anything with will work for the fronts, at
> least in that particular tire.
> 
> You can use these forms to do the tire size conversions for you.
> 
> http://www.csgnetwork.com/tiresizescalc.html
> 
> http://www.csgnetwork.com/tireinfo4calc.html
> 
> 
> 
> -----Original Message-----
> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
> Behalf Of SEL
> Sent: Friday, May 18, 2007 6:59 PM
> To: detomaso at realbig.com
> Subject: [DeTomaso] (no subject)
> 
> Hi all - I've been bugging Mark McW and Garth with a lot of dumb questions -
> so I figured I might as well bug all of you - stumbled on to this tire - H
> rated (130mph) - ok for me as my use will be street - but having a tough
> time translating sizes into current cm sizing - there seem to be a lot of
> tires on the chart below that are suggested for 8" and 10" rims widths and
> that are 15" diameter - but if for example I were looking for 225/50/15 and
> 305/50/15, do any of these tires match - and if so, how are you figuring
> that out - for reference this comes from:
> 
> https://www.hoosiertire.com/strttire.htm
> 
> 
> Hoosier Pro-Street Radials For Head-turning Looks and Performance
> The only true, steel-belted radial tire for Pro-Street and Hot Rod
> enthusiasts! 
> You deserve tires that ride as great as they look. Hoosier's Pro-Street
> steel-belted radials with sleek black sidewalls are designed to enhance your
> custom car, without sacrificing a comfortable ride. Traditional bias-ply
> tires can't compete with Hoosier Pro-Street Radial when it comes to reliable
> highway stability. The exclusive Hoosier Pro-Street tread pattern is
> available in eighteen sizes.
> For head-turning style and performance, drive the Hoosier Pro-Street Radial.
> 
> Visit www.hoosiertire.com for the complete Hoosier Tire line up. 
>  
> Tire SizeSide
> WallTread
> DepthApproved
> Rim WidthsOverall DiameterSection
> WidthTread
> WidthMax
> LoadRated
> InflStock
> NumberSpeed
> RatingTire
> WeightSuggested
> Price
> 24x7.50R-15LTSBL8/32nd5.0-6.5" (6.0)23.8"7.5"5.3"760351903071 H19#$162.00
> 25x7.50R-15LTSBL8/32nd5.0-6.5" (6.0)24.9"7.5"5.3"855351904075 H20#$164.00
> 26x7.50R-15LTSBL8/32nd5.0-6.5" (6.0)25.9"7.5"5.3"965351905079 H21#$166.00
> 26x7.50R-17LTSBL8/32nd5.0-6.5" (6.0)25.9"7.5"5.3"825351905574 H22#$166.00
> 27x10.50R-15LTSBL8/32nd7.0-9.0" (8.5)26.5"10.5"8.3"1235351907588 H29#$201.00
> 28x9.50R-15LTSBL8/32nd7.5-9.0" (8.0)27.0" 9.75"8.0"1325351910090 H28#$189.00
> 29x12.50R-15LTSBL8/32nd8.5-11.0" (10.0)29.0"13.0"10.0"1260251915089
> H35#$236.00
> 29x15.50R-15LTSBL8/32nd11.0-13.0" (12.0)29.0"15.2"12.1"1355251920091
> H40#$273.00
> *29x15.50R-16LTSBL8/32nd11.0-13.0" (12.0)29.0"15.2"12.1"1280251921589
> H40#$260.00*
> 29x18.50R-15LTSBL8/32nd13.0-16.0" (14.0)29.0"17.8"14.6"1435251925093
> H47#$300.00
> 31x12.50R-15LTSBL8/32nd 8.5-11.0" (10.0)31.0"13.4"10.3"1520251927595
> H39#$257.00
> 31x12.50R-16LTSBL8/32nd 8.5-11.0" (10.0)31.0"12.8"10.3"1435251927693
> H40#$260.00
> 31x16.50R-15LTSBL8/32nd12.0-14.0" (12.0)31.0"16.0"12.8"1655251930098
> H45#$306.00
> *31x16.50R-16LTSBL8/32nd12.0-14.0" (12.0)31.0"16.0"12.8"1565251931596
> H45#$290.00*
> 31x16.50R-17LTSBL8/32nd12.0-14.0" (12.0)31.0"16.0"12.8"1475251932594
> H46#$315.00
> 31x18.50R-15LTSBL8/32nd13.0-16.0" (14.0)31.0"18.0"14.5"1710251935099
> H50#$321.00
> 31x18.50R-17LTSBL8/32nd13.0-16.0" (14.0)31.0"18.0"14.5"1520251937595
> H50#$325.00
> 33x21.50R-15LTSBL8/32nd15.0-19.0" (17.0)32.0"21.3"16.8"21502519410107
> H62#$365.00
> 
> NOTE: Bold type indicates measuring rim. *Please check our website at
> www.hoosiertire.com for current pricing. Prices subject to change without
> notice.
> "tires DesigneD For Champions"R
> 65465 U.S. 31 u Lakeville, IN 46536 u (574) 784-3152 u Fax (574) 784-2385
> rev. 1-07
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