[Supras] Tire recomendation

Jeff Mohler speedtoys.racing at gmail.com
Sun Dec 2 06:34:11 CST 2007 

Performance tires at/near freezing are 1/2 of what they'll be like in warmer
weather..and in some cases downright dangerous.

The compound wont soften up and become compliant enough that cold.

I MIGHT see 38-40d in the AM where I live, and the first few miles I can
feel where the tires sat overnight, feels like a flat spot, but it comes out
after they warm up in about a mile (of my driving)..which I ensure you, is
never in a straight line.

Here is the interesting 2/3rds of it everyday:
http://maps.google.com/maps?f=d&hl=en&geocode=&time=&date=&ttype=&saddr=Saratoga,+CA&daddr=95006&sll=37.17079,-122.154626&sspn=0.314608,0.692139&ie=UTF8&ll=37.235659,-122.086258&spn=0.078584,0.173035&z=13&om=1

I got about...25k out of my last set.  And that was on a _great_ alignment
by someone who understands the dynamics of how an alignment works.

I also get about 30k out of a set of brake pads, and they get solid use as
well.

But..for the last 4 months this has been my daily drive, or at least most of
it, back & forth to job site.

http://maps.google.com/maps?f=d&hl=en&geocode=&time=&date=&ttype=&saddr=95006&daddr=woodside,+CA&sll=37.328127,-122.195435&sspn=0.313951,0.692139&ie=UTF8&ll=37.300821,-122.195435&spn=0.314065,0.692139&z=11&om=1

I -do- exercise my hardware.


On Dec 1, 2007 9:18 PM, berniek at technicaldevelop.com <
berniek at technicaldevelop.com> wrote:

> Jeff:
>
>    Thanks for the response.  I should have stated that the tires on the
> car are RE750's.  Interestingly the RE750's are not rated that much
> differently than the RE050A's:
>
>
> RE050A:  Cornering:  9.1. Dry traction: 9.2.  Steering response: 9.1.
> RE750:     Cornering: 8.6.  Dry traction: 8.9. Steering response: 8.7.
>
>
>    Maybe the ratings are not really indicative of how the tires feel
> and behave in practice.  Tonight before writing, I took my favorite
> drive in the coldest weather we have had here in the Northeast (maybe
> 28F to 30F earlier tonight).  In September weather when I first got the
> car running with the refreshed engine it was not that much different,
> though, although WOT bursts were kept to a minimum until I had about 400
> miles on the engine (just about now).
>
>
> Any ideas about the influence of temperature would be appreciated.
>
>
>    Bernie
>
>
> Jeff Mohler wrote:
> > Bernie:
> >
> > I swear by these:
> >
> http://www.tirerack.com/tires/tires.jsp?tireMake=Bridgestone&tireModel=Potenza+RE050A
> > <
> http://www.tirerack.com/tires/tires.jsp?tireMake=Bridgestone&tireModel=Potenza+RE050A
> >
> >
> >
> > I really overall love them.
> >
> >
> >
> > On Dec 1, 2007 8:36 PM, berniek at technicaldevelop.com
> > <mailto:berniek at technicaldevelop.com> < berniek at technicaldevelop.com
> > <mailto:berniek at technicaldevelop.com>> wrote:
> >
> >     Joe:
> >
> >
> >        Thanks for the reply.  In part I went for the Bridgestones
> >     (RE750's)
> >     because of what appeared to be a decent tradeoff between tread
> >     life and
> >     traction, based upon information from the Tire Rack website and a
> call
> >     to them.  Interestingly, the person I spoke to tried to sell me
> >     cheaper
> >     tires at first (some Far Eastern brand I never heard of).  A local
> >     dealer here with a good reputation is a Tire Rack affiliate, and
> >     charges
> >     $35 each for all aspects of installation and old tire disposal.
> >
> >
> >        At this point, I'd be nuts to throw away almost $500 (two tires,
> >     counting shipping) but at some point replacement will be necessary.
> >     Models will probably change in the couple of years the present tires
> >     will last, but any idea of the Goodyear model you had would be
> >     appreciated.  Tire Rack just expanded their selection of 275/40/17
> >     tires, and one or two Goodyears are among the offerings.
> >
> >
> >        Take care.
> >
> >
> >           Bernie
> >
> >
> >     joe at wilmcd.com <mailto:joe at wilmcd.com> wrote:
> >     > Bernie, I made 304RWHP on a stock CT-26 so you are over that
> >     with the mods
> >     > you have. You are probably in the high 300's at the crank if I
> >     was to
> >     > guess.
> >     >
> >     > I used to have some Goodyear's that were great although fairly
> >     expensive.
> >     > I now have Yokohama's that aren't bad but they aren't quite as
> >     sticky as I
> >     > would like. I'm sure the brand doesn't matter as much as the
> >     model though.
> >     >
> >     >
> >     >
> >     >
> >     >> Need some recommendations regarding rear tires which will last
> >     for a
> >     >> while, yet will have enough traction for a mildly modified
> >     engine which
> >     >> feels a let better than stock:  550cc, Lex, 15-17 PSI boost, 57
> >     trim
> >     >> CT26, 3" turbo back exhaust, MHG and the customary mods which
> >     go with
> >     >> it.  Right now I have Bridgestone 275/40/ZR17's on the rear,
> >     bought new
> >     >> (the car is a '91 but has '98 17" MkIV wheels).  First gear is
> >     useless
> >     >> at WOT with reasonable street tires, which is expected, unless
> >     I want to
> >     >> wind up in the weeds or against a guard rail.  But it sometimes
> >     starts
> >     >> to wheel hop at about 4500 RPM in second as well.  Yeah, I
> >     could add
> >     >> traction bars to stop wheel hop, but there would still be the
> >     need to
> >     >> gain traction.
> >     >>
> >     >>
> >     >> There are some 1000 HP MkIV videos on YouTube which do not gain
> >     traction
> >     >> at WOT until 70 MPH, but I'm probably not much over 300 HP at the
> >     >> flywheel, yet 4500 RPM in second gear is about 50 MPH, as a
> guess.
> >     >>
> >     >>
> >     >> Last time I looked at tires for a compromise between tread life
> >     and
> >     >> traction was decades ago in my GTO and Firebird days.  Although
> >     I do not
> >     >> anticipate driving in snow (or rain for that matter), I might
> >     >> occasionally get caught in something unexpected.  So slicks are
> >     out.
> >     >> This car was intended to be a (30% of the time) daily driver.
> >     >>
> >     >>
> >     >> Comments would be appreciated.
> >     >>
> >     >>
> >     >>        BernieK
> >     >>
> >     >>
> >     >>
> >     >>
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> >     >>
> >     >>
> >     >>
> >     >
> >     >
> >     >
> >     >
> >     >
> >
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>

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