Good Tires

[pbureau@attbi.com (ATS - Patrick Bureau)]

basically here is the run down on sizes. (info taken out from the wheel
table of scirocco.org)

175-70-13 (1974-1985)
Diameter - 22.645"
Width    - 6.889"
Profile  - 4.822 (thickness)

185-60-14 (1986-1992)
Diameter - 22.741"
Width    -  7.826"
profile  -  4.373"

195-50-15
Diameter - 22.677"
Width    -  7.677"
Profile  -  3.838"

205-15-50
Diameter  - 23.071"
Width     -  8.071"
profile   -  4.035"


Now the differential for a 8v engine based car is higher than an 16v based
one (why this is true, perhaps they re-geared the tranny accordingly I don't
know)
considering that on average a tach is optimistic by 4% on the speed you are
doing.

175-70-13 is +0.13% to 195.50-15
185-60-14 is -0.27% to 195-50-15

175-70-13 is +1.82% to 205-50-15
185-60-14 is +1.43% to 205-50-15

so basically you should be running 195/50/15 if you want to keep your
speedometer accurate.

on my car , (85 8v) this sums up to 2.4 Miles an hour faster than what the
dial says. considering that I normally drive 5-10mph faster than speed limit
anyways most of the time on the highway, it make little difference to me,
but I know what the numbers are.


==========================================
ATS - Patrick Bureau
1985 8v **Planning 3A/JH  Upgrade**
1988 16v ** FOR SALE : 1500.00$ **
Web Site : http://longcoeur.com/scirocco


=>-----Original Message-----
=>From: scirocco-l-admin@scirocco.org
=>[mailto:scirocco-l-admin@scirocco.org]On Behalf Of Dave Ewing
=>Sent: Thursday, May 23, 2002 12:59 AM
=>To: Scirocco List
=>Subject: Re: Good Tires
=>
=>
=>MessageThe way tire measurements work is that the first number is width in
=>mm's then the second number is the percentage of the width on the
=>sidewall.
=>So 205/50/15s would have over 100mm of sidewall where 195/50/15 have a
=>sidewall of less than 100mm.  The measurement 205/50 is the width
=>to height
=>ratio and the height is the aspect ratio or ratio of the width.
=>If you want
=>you can check out dunlop's "Tire Sizing 101" here:
=>http://www.dunloptire.com/tt101_sizing.html HTH!
=>
=>Dave
=>
=>
=>How will wider tires throw a speedo off? I thought only the
=>diameter altered
=>speed.
=>
=>
=>Tyler,
=>
=>Go for the Michelin Pilot SX (or something like that) and get the
=>price from
=>Tire Rack's website and Discount will honor it.  I bought the Michelin
=>Pilots I have on my car now for $69 ea and Discount was retailing them for
=>$129 each!  Tire Rack had them for $59 but Discount charged me $10 freight
=>each which is still a steal.  The other night on the way home I hit a 270
=>deg off rap and was very surprised with the grip, and it was raining out!!
=>HTH!!  Oh, 205s might be a little wide and will throw your speedo off.  I
=>believe that 195/50-15s are closer to the circumfrence of the stock
=>wheel/tire.  HTH!
=>
=>Dave
=>
=>
=>I'm on discount tire direct right now.  I'm looking at
=>205/50-15's and want
=>to keep the price below $100 per tire.  I live in Olympia, Wa so
=>I have lots
=>of wet weather but a good amount of dry weather too.
=>Right now I'm looking at the Kumho Ecsta Supra 712, the Falken Ziex ZE-512
=>and the Nitto NT 450 Extreme Performance.  Are any of these really good or
=>even the best choice of what to get.
=>Also are there any problems with putting 205's on 6.5 inch wheels?  Thanks
=>and sorry for another tire question :o)
=>
=>
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