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> Goodyear vs Hoosier Slicks, The testing continues....
nine14cats
post Mar 18 2004, 10:26 PM
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Bill Pickering -- 914-6 GT aka....Leeloo
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I tire tested this last Time Trial at Buttonwillow. I'm running 23x9x15 canti slicks in the following:

Goodyear = R430 Compound
Hoosier = R60 Compound

I scubbed both new sets of tires in 1 month ago at Laguna. I then ran the Goodyears in session 1 on Sat and Hoosiers in session 2. I reversed the order on Sunday in order to be fair about track temps. Both days were low 80's ambient.

Saturday I was 1.8 seconds a lap quicker with the Hoosiers and Sunday I was 2.2 seconds quicker. I guess all it means is that the Hoosier compound was working better for me that weekend.

Does anyone know if Hoosier and/or Goodyear changed their rubber formula significantly over the last year? Last season the tires performed nearly identical.

Anyone with similar experiences?

Bill P.
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nine14cats
post Mar 19 2004, 01:24 PM
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Bill Pickering -- 914-6 GT aka....Leeloo
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Hi JP and John,

I run R45's for Auto-x and for tracks easy on tires like Laguna Seca and I run the R60's (it's now R55's I believe) for the tracks that are tougher on tires.

The tire compounds go something like this for the canti slicks:

Softer to Harder
--------------------
210 Goodyear (No longer available)
R35 Hoosier
250 Goodyear (Newest offering, replacement for 210)
R45 Hoosier
430 Goodyear (Most common Road Racing compound for folks partial to Goodyear)
R55/R60 Hoosier (Most common Road Racing compound for folks partial to Hoosiers)
600 Goodyear

I've used the 210 and a now discontinued 270 Goodyear compound for auto-x and the R45 Hoosier compound for auto-x. The 210 Goodyear's were definitely the stickiest but are no longer available. I don't feel any difference between the R45 Hoosiers or any of the other Goodyear compounds other than I have observed that the Hoosier seem to wear a little better than the Goodyears. Also the Goodyears have a much stiffer sidewall, so turn in is quicker on an auto-x course. On the track for whatever reason the Hoosiers and Goodyears feel the same for steering input.

The R45's heat up in 1 lap on the track. The R60's heat up in 1 lap as well, but I also help scrub them to temp during the warm up.

Lots of data...... (IMG:style_emoticons/default/blink.gif)

I'm keeping track of heat cycles on each set. I'll report back with how many heat cycles you get before the tires go off pace.

Thanks,

Bill
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